About this manual
Chapter 1. Read this first: Important safety information
Chapter 2. Product overview
Chapter 3. Using your computer
Chapter 4. You and your computer
Chapter 5. Security
Chapter 6. Advanced configuration
Chapter 7. Troubleshooting, diagnostics, and recovery
Chapter 8. Service checkout and symptom-to-FRU index
- Service checkout
  - Problem determination tips
- Symptom-to-FRU index
Chapter 9. Hardware removal and installation
Chapter 10. Getting information, help, and service
- Information resources
- Help and service
Appendix A. System memory speed
Appendix B. Supplemental information about the Ubuntu operating system
Appendix C. Regulatory and TCO Certified information of countries and regions
Appendix D. WEEE and recycling information of countries and regions
Appendix E. Restriction of Hazardous Substances (RoHS) Directive of countries and regions
Appendix F. ENERGY STAR model information
Appendix G. Notices
Appendix H. Trademarks

Lenovo P520c User Manual

Displayed below is the user manual for P520c by Lenovo which is a product in the PCs/Workstations category. This manual has pages.

Related Manuals

Lenovo P520c Manual

P520c Hardware Maintenance Manual

Machine Types: 30BY, 30BX, and 30C0

Note: Before using this information and the product it supports, be sure to read and understand the Chapter

1 “Read this first: Important safety information” on page 1 and Appendix G “Notices” on page 211.

Fifth Edition (May 2020)

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services

Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-

35F-05925.

Contents

About this manual . . . . . . . . . . . . v

Chapter 1. Read this first: Important

safety information . . . . . . . . . . . . 1

Power cords and power adapters . . . . . . . . . 1

General safety . . . . . . . . . . . . . . . . 1

Electrical safety . . . . . . . . . . . . . . . . 2

Safety inspection guide . . . . . . . . . . . . . 3

Handling electrostatic discharge-sensitive

devices . . . . . . . . . . . . . . . . . . . 4

Grounding requirements . . . . . . . . . . . . 5

Safety notices (multi-lingual translations) . . . . . . 5

Chapter 2. Product overview . . . . . 29

Hardware locations . . . . . . . . . . . . . 29

Front view . . . . . . . . . . . . . . . 29

Rear view . . . . . . . . . . . . . . . 30

Computer components . . . . . . . . . . 33

Major FRUs and CRUs . . . . . . . . . . 34

Parts on the system board . . . . . . . . . 39

Internal storage drives . . . . . . . . . . 41

Machine type and model label . . . . . . . 42

Computer features. . . . . . . . . . . . . . 43

Computer specifications . . . . . . . . . . . 46

Programs . . . . . . . . . . . . . . . . . 47

Accessing a program on your computer . . . 47

An introduction to Lenovo programs . . . . . 47

Chapter 3. Using your computer . . . 49

Registering your computer . . . . . . . . . . 49

Setting the computer volume . . . . . . . . . 49

Using a disc . . . . . . . . . . . . . . . . 49

Guidelines about using the optical drive . . . 49

Handling and storing a disc . . . . . . . . 49

Playing and removing a disc . . . . . . . . 50

Recording a disc . . . . . . . . . . . . 50

Connecting to a network . . . . . . . . . . . 51

Chapter 4. You and your computer . . 53

Arranging your workspace . . . . . . . . . . 53

Glare and lighting . . . . . . . . . . . . 53

Air circulation . . . . . . . . . . . . . . 53

Electrical outlet locations and cable lengths . . 53

Comfort . . . . . . . . . . . . . . . . 53

Accessibility information . . . . . . . . . . . 54

Cleaning your computer . . . . . . . . . . . 57

Maintenance . . . . . . . . . . . . . . . . 57

Basic maintenance tips . . . . . . . . . . 57

Good maintenance practices . . . . . . . . 57

Keeping your computer current . . . . . . . 58

Moving your computer . . . . . . . . . . . . 58

Chapter 5. Security . . . . . . . . . . 59

Locking your computer . . . . . . . . . . . . 59

Locking the computer cover . . . . . . . . 59

Attaching a Kensington-style cable lock . . . 59

Viewing and changing security settings in the

Setup Utility program . . . . . . . . . . . . 60

Using passwords and Windows accounts . . . . 60

Using fingerprint authentication . . . . . . . . 60

Using the cover presence switch . . . . . . . . 61

Using firewalls . . . . . . . . . . . . . . . 61

Protecting data against viruses . . . . . . . . . 61

Using the Smart USB Protection function. . . . . 62

Computrace Agent software embedded in

firmware. . . . . . . . . . . . . . . . . . 62

Trusted Platform Module (TPM). . . . . . . . . 62

Intel BIOS guard . . . . . . . . . . . . . . 62

Chapter 6. Advanced

configuration. . . . . . . . . . . . . . 63

Using the Setup Utility program . . . . . . . . 63

Starting the Setup Utility program . . . . . . 63

Changing the display mode of the Setup Utility

program . . . . . . . . . . . . . . . . 63

Changing the display language of the Setup

Utility program . . . . . . . . . . . . . 63

Enabling or disabling a device . . . . . . . 64

Enabling or disabling the automatic power-on

of your computer . . . . . . . . . . . . 64

Enabling or disabling the ErP LPS compliance

mode . . . . . . . . . . . . . . . . . 64

Enabling or disabling the configuration change

detection . . . . . . . . . . . . . . . 65

Changing the BIOS settings before installing a

new operating system . . . . . . . . . . 65

Using BIOS passwords . . . . . . . . . . 65

Selecting a startup device . . . . . . . . . 67

Changing the fan speed level . . . . . . . . 68

Exiting the Setup Utility program . . . . . . 68

Updating and recovering the BIOS . . . . . . . 68

BIOS level . . . . . . . . . . . . . . . 69

Configuring RAID . . . . . . . . . . . . . . 70

An Introduction to RAID . . . . . . . . . . 70

Configuring RAID with Intel RSTe . . . . . . 70

Configuring RAID with AVAGO MegaRAID

Configuration Utility . . . . . . . . . . . 72

Configuring RAID with Intel Virtual RAID on

CPU . . . . . . . . . . . . . . . . . 74

Chapter 7. Troubleshooting,

diagnostics, and recovery . . . . . . . 77

Basic procedure for resolving computer

problems . . . . . . . . . . . . . . . . . 77

Troubleshooting . . . . . . . . . . . . . . 77

Startup problems . . . . . . . . . . . . 77

Audio problems . . . . . . . . . . . . . 78

CD or DVD problems . . . . . . . . . . . 79

Intermittent problems. . . . . . . . . . . 80

Storage drive problems . . . . . . . . . . 80

Ethernet LAN problems . . . . . . . . . . 80

Wireless LAN problem . . . . . . . . . . 81

Bluetooth problems . . . . . . . . . . . 82

Performance problems . . . . . . . . . . 82

Serial connector problem . . . . . . . . . 83

USB device problems . . . . . . . . . . 84

Software and driver problems . . . . . . . 84

Diagnosing problems . . . . . . . . . . . . 84

UEFI diagnostic program . . . . . . . . . . . 87

Recovery information . . . . . . . . . . . . 87

Chapter 8. Service checkout and

symptom-to-FRU index . . . . . . . . 89

Service checkout . . . . . . . . . . . . . . 89

Problem determination tips . . . . . . . . 89

Symptom-to-FRU index . . . . . . . . . . . 90

Hard disk drive boot error . . . . . . . . . 90

Power supply problems . . . . . . . . . . 91

Beep symptoms . . . . . . . . . . . . . 91

POST error codes . . . . . . . . . . . . 92

Miscellaneous error conditions . . . . . . . 93

Undetermined problems . . . . . . . . . 95

Chapter 9. Hardware removal and

installation . . . . . . . . . . . . . . . 97

Handling static-sensitive devices . . . . . . . . 97

Preparing your computer and removing the

computer cover . . . . . . . . . . . . . . . 97

Removing and installing hardware . . . . . . . 98

External options . . . . . . . . . . . . . 98

Front bezel . . . . . . . . . . . . . . . 99

Power button . . . . . . . . . . . . . . 99

PCIe card . . . . . . . . . . . . . . . 100

Memory module . . . . . . . . . . . . . 107

Optical drive . . . . . . . . . . . . . . 109

Storage drive in the front-access storage

enclosure . . . . . . . . . . . . . . . 112

Device in the multi-drive conversion kit . . . . 119

Coin-cell battery. . . . . . . . . . . . . 130

Cover presence switch . . . . . . . . . . 131

Power supply assembly . . . . . . . . . . 132

Heat-sink-and-fan assembly . . . . . . . . 134

Primary storage drive . . . . . . . . . . . 136

Secondary storage drive . . . . . . . . . 138

2.5-inch storage drive . . . . . . . . . . 140

Front fan assembly. . . . . . . . . . . . 143

Rear fan assembly . . . . . . . . . . . . 144

Device in the 5.25-inch flex module . . . . . 146

M.2 solid-state drive . . . . . . . . . . . 160

Thermal sensor . . . . . . . . . . . . . 169

Internal speaker . . . . . . . . . . . . . 170

Front audio and USB assembly . . . . . . . 172

Card reader . . . . . . . . . . . . . . 173

Wi-Fi units . . . . . . . . . . . . . . . 174

Microprocessor . . . . . . . . . . . . . 181

System board. . . . . . . . . . . . . . 184

Completing the parts replacement . . . . . . . 188

Chapter 10. Getting information,

help, and service . . . . . . . . . . . . 191

Information resources . . . . . . . . . . . . 191

Accessing the user guide in various

languages . . . . . . . . . . . . . . . 191

Windows help system . . . . . . . . . . 191

Safety and warranty . . . . . . . . . . . 191

Lenovo Web site. . . . . . . . . . . . . 191

Lenovo Support Web site . . . . . . . . . 191

Frequently asked questions . . . . . . . . 192

Help and service . . . . . . . . . . . . . . 192

Calling for service . . . . . . . . . . . . 192

Using other services . . . . . . . . . . . 193

Purchasing additional services . . . . . . . 193

Appendix A. System memory

speed. . . . . . . . . . . . . . . . . . 195

Appendix B. Supplemental

information about the Ubuntu operating

system . . . . . . . . . . . . . . . . . 197

Appendix C. Regulatory and TCO

Certified information of countries and

regions . . . . . . . . . . . . . . . . . 199

Appendix D. WEEE and recycling

information of countries and

regions . . . . . . . . . . . . . . . . . 203

ii P520c Hardware Maintenance Manual

Appendix E. Restriction of Hazardous

Substances (RoHS) Directive of countries

and regions. . . . . . . . . . . . . . . 207

Appendix F. ENERGY STAR model

information. . . . . . . . . . . . . . . 209

Appendix G. Notices. . . . . . . . . . 211

Appendix H. Trademarks . . . . . . . 213

iv P520c Hardware Maintenance Manual

About this manual

This manual provides service and reference information for ThinkStation® computers listed on the front

cover.

Use this manual along with the advanced diagnostic tests to troubleshoot problems.

Important: This manual is intended only for trained service technicians who are familiar with ThinkStation

computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Before servicing a ThinkStation computer, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

vi P520c Hardware Maintenance Manual

Chapter 1. Read this first: Important safety information

This chapter contains the safety information that you must be familiar with.

Power cords and power adapters

Use only the power cords and power adapters supplied by the product manufacturer. Do not use the ac

power cord for other devices.

The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For

other countries, the suitable types shall be used accordingly.

Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that

can cause the cord to fray, crack, or crimp. This can present a safety hazard.

Always route power cords so that they will not be walked on, tripped over, or pinched by objects.

Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power

adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short

circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause

gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can

eventually result in overheating.

Ensure that all power cord connectors are securely and completely plugged into receptacles.

Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such

as deformed plastic) at the ac input or anywhere on the power adapter.

Do not use any power cords where the electrical contacts on either end show signs of corrosion or

overheating or where the power cord appears to have been damaged in any way.

General safety

Follow these rules to ensure general safety:

• Observe good housekeeping in the area of the machines during and after maintenance.

• When lifting any heavy object:

1. Ensure you can stand safely without slipping.

2. Distribute the weight of the object equally between your feet.

3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the

muscles in your back.

Attention: Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you

think are too heavy for you.

• Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

• Before you start the machine, ensure that other service representatives and the customer's personnel are

not in a hazardous position.

• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the

machine.

• Keep your tool case away from walk areas so that other people will not trip over it.

• Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves

are fastened or rolled up above your elbows. If your hair is long, fasten it.

• Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately

8 centimeters (3 inches) from the end.

• Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.

Remember: Metal objects are good electrical conductors.

• Wear safety glasses when you are: hammering, drilling, soldering, cutting wire, attaching springs, using

solvents, or working in any other conditions that might be hazardous to your eyes.

• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that

is worn or defective.

• Reinstall all covers correctly before returning the machine to the customer.

CAUTION:

Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury,

seek medical care immediately.

CAUTION:

Avoid contact with hot components inside the computer. During operation, some components

become hot enough to burn the skin. Before you open the computer cover, turn off the computer,

disconnect power, and wait approximately 10 minutes for the components to cool.

Electrical safety

CAUTION:

Electrical current from power, telephone, and communication cables can be hazardous. To avoid

personal injury or equipment damage, disconnect the attached power cords, telecommunication

systems, networks, and modems before you open the computer covers, unless instructed otherwise

in the installation and configuration procedures.

Observe the following rules when working on electrical equipment.

Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft

material that does not insulate you when working with live electrical currents. Many customers have, near

their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges.

Do not use this type of mat to protect yourself from electrical shock.

• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical

accident occurs, you can then operate the switch or unplug the power cord quickly.

• Do not work alone under hazardous conditions or near equipment that has hazardous voltages.

• Disconnect all power before:

– Performing a mechanical inspection

– Working near power supplies

– Removing or installing Field Replaceable Units (FRUs)

2P520c Hardware Maintenance Manual

• Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer

to power-off the wall box that supplies power to the machine and to lock the wall box in the off position.

• If you need to work on a machine that has exposed electrical circuits, observe the following precautions:

– Ensure that another person, familiar with the power-off controls, is near you.

Remember: Another person must be there to switch off the power, if necessary.

– Use only one hand when working with powered-on electrical equipment; keep the other hand in your

pocket or behind your back.

Remember: There must be a complete circuit to cause electrical shock. By observing the above rule,

you may prevent a current from passing through your body.

– When using a tester, set the controls correctly and use the approved probe leads and accessories for

that tester.

– Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as

metal floor strips and machine frames.

Observe the special safety precautions when you work with very high voltages; these instructions are in

the safety sections of maintenance information. Use extreme care when measuring high voltages.

• Regularly inspect and maintain your electrical hand tools for safe operational condition.

• Do not use worn or broken tools and testers.

• Never assume that power has been disconnected from a circuit. First, check that it has been powered-off.

• Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors,

nongrounded power extension cables, power surges, and missing safety grounds.

• Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is

conductive; such touching can cause personal injury and machine damage.

• Do not service the following parts with the power on when they are removed from their normal operating

places in a machine:

– Power supply units

– Pumps

– Blowers and fans

– Motor generators

and similar units. (This practice ensures correct grounding of the units.)

• If an electrical accident occurs:

– Use caution; do not become a victim yourself.

– Switch off power.

– Send another person to get medical aid.

Safety inspection guide

The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these

products. Each machine, as it was designed and built, had required safety items installed to protect users

and service personnel from injury. This guide addresses only those items. However, good judgment should

be used to identify potential safety hazards due to attachment of features or options not covered by this

inspection guide.

If any unsafe conditions are present, you must determine how serious the apparent hazard could be and

whether you can continue without first correcting the problem.

Consider these conditions and the safety hazards they present:

Chapter 1.Read this first: Important safety information 3

• Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal

electrical shock).

• Explosive hazards, such as a damaged CRT face or bulging capacitor

• Mechanical hazards, such as loose or missing hardware

The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the

power cord disconnected.

Checklist:

1. Check exterior covers for damage (loose, broken, or sharp edges).

2. Power-off the computer. Disconnect the power cord.

3. Check the power cord for:

a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground

continuity for 0.1 ohm or less between the external ground pin and frame ground.

b. The power cord should be the appropriate type as specified in the parts listings.

c. Insulation must not be frayed or worn.

4. Remove the cover.

5. Check for any obvious alterations. Use good judgment as to the safety of any alterations.

6. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or

other liquids, or signs of fire or smoke damage.

7. Check for worn, frayed, or pinched cables.

8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered

with.

Handling electrostatic discharge-sensitive devices

Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to

electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects.

Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the

person handling the part are all at the same charge.

Notes:

1. Use product-specific ESD procedures when they exceed the requirements noted here.

2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

• Keep the parts in protective packages until they are inserted into the product.

• Avoid contact with other people while handling the part.

• Wear a grounded wrist strap against your skin to eliminate static on your body.

• Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when

you are wearing a wrist strap.

• Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially

useful when handling ESD-sensitive devices.

• Select a grounding system, such as those listed below, to provide protection that meets the specific

service requirement.

Note: The use of a grounding system is desirable but not required to protect against ESD damage.

4P520c Hardware Maintenance Manual

– Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

– Use an ESD common ground or reference point when working on a double-insulated or battery-

operated system. You can use coax or connector-outside shells on these systems.

– Use the round ground-prong of the ac plug on ac-operated computers.

Grounding requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper

grounding of the electrical outlet can be verified by a certified electrician.

Safety notices (multi-lingual translations)

The caution and danger safety notices in this section are provided in the following languages:

• English

• Arabic

• Brazilian/Portuguese

• Chinese (simplified)

• Chinese (traditional)

• French

• German

• Hebrew

• Italian

• Korean

• Spanish

DANGER

Electrical current from power, telephone and communication cables is hazardous.

To avoid a shock hazard:

• Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration

of this product during an electrical storm.

• Connect all power cords to a properly wired and grounded electrical outlet.

• Connect to properly wired outlets any equipment that will be attached to this product.

• When possible, use one hand only to connect or disconnect signal cables.

• Never turn on any equipment when there is evidence of fire, water, or structural damage.

• Disconnect the attached power cords, telecommunications systems, networks, and modems

before you open the device covers, unless instructed otherwise in the installation and configuration

procedures.

• Connect and disconnect cables as described in the following tables when installing, moving, or

opening covers on this product or attached devices.

Chapter 1.Read this first: Important safety information 5

To Connect To Disconnect

1. Turn everything OFF.

2. First, attach all cables to devices.

3. Attach signal cables to connectors.

4. Attach power cords to outlet.

5. Turn device ON.

1. Turn everything OFF.

2. First, remove power cords from outlet.

3. Remove signal cables from connectors.

4. Remove all cables from devices.

CAUTION:

When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery

recommended by the manufacturer. If your system has a module containing a lithium battery, replace

it only with the same module type made by the same manufacturer. The battery contains lithium and

can explode if not properly used, handled, or disposed of. Do not:

• Throw or immerse into water

• Heat to more than 100°C (212°F)

• Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

CAUTION:

When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are

installed, note the following:

• Do not remove the covers. Removing the covers of the laser product could result in exposure to

hazardous laser radiation. There are no serviceable parts inside the device.

• Use of controls or adjustments or performance of procedures other than those specified herein

might result in hazardous radiation exposure.

DANGER

Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following:

Laser radiation when open. Do not stare into the beam, do not view directly with optical

instruments, and avoid direct exposure to the beam.

6P520c Hardware Maintenance Manual

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)

CAUTION:

Use safe practices when lifting.

CAUTION:

The power control button on the device and the power switch on the power supply do not turn off the

electrical current supplied to the device. The device also might have more than one power cord. To

remove all electrical current from the device, ensure that all power cords are disconnected from the

power source.

Chapter 1.Read this first: Important safety information 7

8P520c Hardware Maintenance Manual

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)

Chapter 1.Read this first: Important safety information 9

PERIGO

A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa.

Para evitar risco de choque elétrico:

• Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste

produto durante uma tempestade com raios.

• Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas.

• Todo equipamento que for conectado a este produto deve ser conectado a tomadas corretamente

instaladas.

• Quando possível, utilize apenas uma das mãos para conectar ou desconectar cabos de sinal.

• Nunca ligue nenhum equipamento quando houver evidência de fogo, água ou danos estruturais.

• Antes de abrir tampas de dispositivos, desconecte cabos de alimentação, sistemas de telecomunicação,

redes e modems conectados, a menos que especificado de maneira diferente nos procedimentos de

instalação e configuração.

• Conecte e desconecte os cabos conforme descrito na tabela apresentada a seguir ao instalar, mover ou

abrir tampas deste produto ou de dispositivos conectados.

Para Conectar: Para Desconectar:

1. DESLIGUE Tudo.

2. Primeiramente, conecte todos os cabos aos

dispositivos.

3. Conecte os cabos de sinal aos conectores.

4. Conecte os cabos de alimentação às tomadas.

5. LIGUE os dispositivos.

1. DESLIGUE Tudo.

2. Primeiramente, remova os cabos de alimentação das

tomadas.

3. Remova os cabos de sinal dos conectores.

4. Remova todos os cabos dos dispositivos.

CUIDADO:

Ao substituir a bateria de lítio, utilize apenas uma bateria com Número de Peça 45C1566 ou um tipo de

bateria equivalente recomendado pelo Se o seu sistema possui um módulo com uma bateria de lítio,

substitua-o apenas por um módulo do mesmo tipo e do mesmo fabricante. A bateria contém lítio e

pode explodir se não for utilizada, manuseada ou descartada de maneira correta.

Não:

• Jogue ou coloque na água

• Aqueça a mais de 100°C (212°F)

• Conserte nem desmonte

Descarte a bateria conforme requerido pelas leis ou regulamentos locais.

PRECAUCIÓN:

10 P520c Hardware Maintenance Manual

Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica

ou transmissores) estiverem instalados, observe o seguinte:

• Não remova as tampas. A remoção das tampas de um produto a laser pode resultar em exposição

prejudicial à radiação de laser. Não existem peças que podem ser consertadas no interior do dispositivo.

• A utilização de controles ou ajustes ou a execução de procedimentos diferentes dos especificados aqui

pode resultar em exposição prejudicial à radiação.

PERIGO

Alguns produtos a laser contêm diodo de laser integrado da Classe 3A ou da Classe 3B. Observe o seguinte:

Radiação a laser quando aberto. Não olhe diretamente para o feixe a olho nu ou com instrumentos ópticos e

evite exposição direta ao feixe.

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)

CUIDADO:

Utilize procedimentos de segurança para levantar equipamentos.

CUIDADO:

O botão de controle de alimentação do dispositivo e o botão para ligar/desligar da fonte de alimentação não

desligam a corrente elétrica fornecida ao dispositivo. O dispositivo também pode ter mais de um cabo de

alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que todos os cabos de

alimentação estejam desconectados da fonte de alimentação.

Chapter 1.Read this first: Important safety information 11

12 P520c Hardware Maintenance Manual

Chapter 1.Read this first: Important safety information 13

14 P520c Hardware Maintenance Manual

DANGER

Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter

un danger.

Pour éviter tout risque de choc électrique :

• Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration

de ce produit au cours d'un orage.

• Branchez tous les cordons d'alimentation sur un socle de prise de courant correctement câblé et mis à la

terre.

• Branchez sur des socles de prise de courant correctement câblés tout équipement connecté à ce produit.

• Lorsque cela est possible, n'utilisez qu'une seule main pour connecter ou déconnecter les câbles

d'interface.

• Ne mettez jamais un équipement sous tension en cas d'incendie ou d'inondation, ou en présence de

dommages matériels.

• Avant de retirer les carters de l'unité, mettez celle-ci hors tension et déconnectez ses cordons

d'alimentation, ainsi que les câbles qui la relient aux réseaux, aux systèmes de télécommunication et aux

modems (sauf instruction contraire mentionnée dans les procédures d'installation et de configuration).

• Lorsque vous installez, que vous déplacez, ou que vous manipulez le présent produit ou des

périphériques qui lui sont raccordés, reportez-vous aux instructions ci-dessous pour connecter et

déconnecter les différents cordons.

Chapter 1.Read this first: Important safety information 15

Connexion Déconnexion

1. Mettez les unités HORS TENSION.

2. Commencez par brancher tous les cordons sur les

unités.

3. Branchez les câbles d'interface sur des

connecteurs.

4. Branchez les cordons d'alimentation sur des prises.

5. Mettez les unités SOUS TENSION.

1. Mettez les unités HORS TENSION.

2. Débranchez les cordons d'alimentation des prises.

3. Débranchez les câbles d'interface des connecteurs.

4. Débranchez tous les câbles des unités.

ATTENTION:

Remplacer la pile au lithium usagée par une pile de référence identique exclusivement, (référence

45C1566), ou suivre les instructions du fabricant qui en définit les équivalences. Si votre système est

doté d'un module contenant une pile au lithium, vous devez le remplacer uniquement par un module

identique, produit par le même fabricant. La pile contient du lithium et peut exploser en cas de

mauvaise utilisation, de mauvaise manipulation ou de mise au rebut inappropriée.

Ne pas :

• la jeter à l'eau,

• l'exposer à des températures supérieures à 100°C,

• chercher à la réparer ou à la démonter.

Ne pas mettre la pile à la poubelle. Pour la mise au rebut, se reporter à la réglementation en vigueur.

ATTENTION:

Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou

des émetteurs) sont installés, prenez connaissance des informations suivantes :

• Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au

rayonnement dangereux du laser. Aucune pièce de l'unité n'est réparable.

• Pour éviter tout risque d'exposition au rayon laser, respectez les consignes de réglage et

d'utilisation des commandes, ainsi que les procédures décrites dans le présent manuel.

DANGER

Certains produits à laser contiennent une diode à laser intégrée de classe 3A ou 3B. Prenez

connaissance des informations suivantes:

Rayonnement laser lorsque le carter est ouvert. Evitez toute expositiondirecte au rayon laser. Evitez

de regarder fixement le faisceau ou del'observer à l'aide d'instruments optiques.

16 P520c Hardware Maintenance Manual

≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)

ATTENTION:

Soulevez la machine avec précaution.

ATTENTION:

L'interrupteur de contrôle d'alimentation de l'unité et l'interrupteur dubloc d'alimentation ne coupent

pas le courant électrique alimentantl'unité. En outre, le système peut être équipé de plusieurs

cordonsd'alimentation. Pour mettre l'unité hors tension, vous devez déconnectertous les cordons de

la source d'alimentation.

VORSICHT

An Netz-, Telefon- und Datenleitungen können gefährliche Spannungen anliegen.

Aus Sicherheitsgründen:

• Bei Gewitter an diesem Gerät keine Kabel anschließen oder lösen. Ferner keine Installations-,

Wartungs- oder Rekonfigurationsarbeiten durchführen.

• Gerät nur an eine Schutzkontaktsteckdose mit ordnungsgemäß geerdetem Schutzkontakt

anschließen.

• Alle angeschlossenen Geräte ebenfalls an Schutzkontaktsteckdosen mit ordnungsgemäß

geerdetem Schutzkontakt anschließen.

• Die Signalkabel nach Möglichkeit einhändig anschließen oder lösen, um einen Stromschlag durch

Berühren von Oberflächen mit unterschiedlichem elektrischem Potenzial zu vermeiden.

• Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder Gebäudeschäden vorliegen.

Chapter 1.Read this first: Important safety information 17

• Die Verbindung zu den angeschlossenen Netzkabeln, Telekommunikationssystemen, Netzwerken

und Modems ist vor dem Öffnen des Gehäuses zu unterbrechen, sofern in den Installations- und

Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind.

• Zum Installieren, Transportieren und Öffnen der Abdeckungen des Computers oder der

angeschlossenen Einheiten die Kabel gemäß der folgenden Tabelle anschließen und abziehen.

Zum Anschließen der Kabel gehen Sie wie folgt vor Zum Abziehen der Kabel gehen Sie wie folgt vor

1. Schalten Sie alle Einheiten AUS.

2. Schließen Sie erst alle Kabel an die Einheiten an.

3. Schließen Sie die Signalkabel an die Buchsen an.

4. Schließen Sie die Netzkabel an die Steckdose an.

5. Schalten Sie die Einheit EIN.

1. Schalten Sie alle Einheiten AUS.

2. Ziehen Sie zuerst alle Netzkabel aus den

Netzsteckdosen.

3. Ziehen Sie die Signalkabel aus den Buchsen.

4. Ziehen Sie alle Kabel von den Einheiten ab.

CAUTION:

Eine verbrauchte Lithiumbatterie nur durch eine Batterie mit der Teilenummer 45C1566 oder eine

gleichwertige, vom Hersteller empfohlene Batterie ersetzen. Enthält das System ein Modul mit einer

Lithiumbatterie, dieses nur durch ein Modul desselben Typs und von demselben Hersteller ersetzen. Die

Batterie enthält Lithium und kann bei unsachgemäßer Verwendung, Handhabung oder Entsorgung

explodieren.

Die Batterie nicht:

• mit Wasser in Berührung bringen.

• über 100 C erhitzen.

• reparieren oder zerlegen.

Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten.

ACHTUNG:

Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit

Lichtwellenleitertechnik oder Sendern) Folgendes beachten:

• Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können

gefährliche Laserstrahlungen freigesetzt werden. Das Gerät enthält keine zu wartenden Teile.

• Werden Steuerelemente, Einstellungen oder Durchführungen von Prozeduren anders als hier

angegeben verwendet, kann gefährliche Laserstrahlung auftreten.

VORSICHT

Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B. Beachten Sie Folgendes:

18 P520c Hardware Maintenance Manual

Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine Lupen oder Spiegel

verwenden. Strahlungsbereich meiden.

≥18 kg ≥32 kg ≥55 kg

ACHTUNG:

Arbeitsschutzrichtlinien beim Anheben der Maschine beachten.

ACHTUNG:

Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht

unterbrochen. Die Einheit kann auch mit mehreren Netzkabeln ausgestattet sein. Um die

Stromversorgung für die Einheit vollständig zu unterbrechen, müssen alle zum Gerät führenden

Netzkabel vom Netz getrennt werden.

Chapter 1.Read this first: Important safety information 19

20 P520c Hardware Maintenance Manual

PERICOLO

La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere

pericolosa.

Per evitare il rischio di scosse elettriche:

Chapter 1.Read this first: Important safety information 21

• Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la

riconfigurazione del prodotto durante un temporale.

• Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a

terra.

• Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per

questo prodotto.

• Se possibile, utilizzare solo una mano per collegare o scollegare i cavi di segnale.

• Non accendere assolutamente apparecchiature in presenza di incendi, perdite d'acqua o danno

strutturale.

• Scollegare i cavi di alimentazione, i sistemi di telecomunicazione, le reti e il modem prima di aprire i

coperchi del dispositivo, salvo istruzioni contrarie relative alle procedure di installazione e

configurazione.

• Collegare e scollegare i cavi come descritto nella seguente tabella quando vengono effettuate

operazioni di installazione, spostamento o apertura dei coperchi di questo prodotto o delle unità

collegate.

Per collegarsi Per scollegarsi

1. SPEGNERE le apparecchiature.

2. Innanzitutto, collegare tutti i cavi alle unità.

3. Collegare i cavi di segnale ai connettori.

4. Collegare i cavi di alimentazione alla presa.

5. Accendere l'unità.

1. SPEGNERE le apparecchiature.

2. Innanzitutto, rimuovere i cavi di alimentazione dalla

presa.

3. Rimuovere i cavi di segnale dai connettori.

4. Rimuovere tutti i cavi dalle unità.

ATTENZIONE:

Quando si sostituisce la batteria al litio, utilizzare solo il Numero parte 45C1566 o un tipo di batteria

equivalente consigliato dal produttore. Se sul sistema è presente un modulo che contiene una batteria

al litio, sostituirlo solo con un tipo di modulo dello stesso tipo della stessa casa di produzione. La

batteria contiene litio e può esplodere se usata, maneggiata o smaltita in modo non corretto.

Non:

• Gettare o immergere la batteria nell'acqua

• Riscaldarla ad una temperatura superiore ai 100 gradi C (212 gradi F)

• Smontarla, ricaricarla o tentare di ripararla

Le batterie usate vanno smaltite in accordo alla normativa in vigore (DPR 915/82 e successive

disposizioni e disposizioni locali).

ATTENZIONE:

Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o

trasmittenti), tener presente quanto segue:

22 P520c Hardware Maintenance Manual

• Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni

laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica.

• L'utilizzo di controlli, regolazioni o l'esecuzione di procedure non descritti nel presente manuale

possono provocare l'esposizione a radiazioni pericolose.

PERICOLO

Alcune unità laser contengono un diodo laser di Classe 3A o Classe 3B. Tener presente quanto segue:

Aprendo l'unità vengono emesse radiazioni laser. Non fissare il fascio, non guardarlo direttamente

con strumenti ottici ed evitare l'esposizione al fascio.

≥18 kg ≥32 kg ≥55 kg

ATTENZIONE:

Prestare attenzione nel sollevare l'apparecchiatura.

ATTENZIONE:

Il pulsante di controllo dell'alimentazione presente sull'unità e l'interruttore dell'alimentatore non

disattivano l'alimentazione corrente fornita all'unità. E' possibile che l'unità disponga di più cavi di

alimentazione. Per disattivare l'alimentazione dall'unità, accertarsi che tutti i cavi di alimentazione

siano scollegati dalla fonte di alimentazione.

Chapter 1.Read this first: Important safety information 23

24 P520c Hardware Maintenance Manual

PELIGRO

La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser

peligrosa.

Para evitar el riesgo de descarga eléctrica:

• No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o

reconfiguración de este producto durante una tormenta eléctrica.

• Conecte todos los cables de alimentación a tomas de corriente debidamente cableadas y

conectadas a tierra.

• Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente

debidamente cableadas.

• Siempre que sea posible, utilice una sola mano para conectar o desconectar los cables de señal.

Chapter 1.Read this first: Important safety information 25

• No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales.

• Desconecte los cables de alimentación, los sistemas de telecomunicaciones, las redes y los

módems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique lo

contrario en los procedimientos de instalación y configuración.

• Conecte y desconecte los cables, como se describe en la tabla siguiente, cuando instale, mueva o

abra las cubiertas de este producto o de los dispositivos conectados.

Para conectar Para desconectar

1. APÁGUELO todo.

2. En primer lugar, conecte todos los cables a los

dispositivos.

3. Conecte los cables de señal a los conectores.

4. Enchufe los cables de alimentación a las tomas de

corriente.

5. Encienda el dispositivo.

1. APÁGUELO todo.

2. En primer lugar, desenchufe los cables de

alimentación de las tomas de corriente.

3. Desconecte los cables de señal de los conectores.

4. Desconecte todos los cables de los dispositivos.

PRECAUCIÓN:

Cuando sustituya una batería de litio, utilice solamente una batería número de pieza 45C1566 u otra

de tipo equivalente recomendada por el fabricante. Si su sistema dispone de un módulo que contiene

una batería de litio, reemplácelo sólo con el mismo tipo de módulo, del mismo fabricante. La batería

contiene litio y puede explotar si no se utiliza, manipula o desecha correctamente.

No debe:

• Arrojarla al agua o sumergirla en ella

• Exponerla a temperaturas superiores a 100°C (212°F)

• Repararla o desmontarla

Deshágase de la batería según especifiquen las leyes o normas locales.

PRECAUCIÓN:

Cuando haya productos láser (como unidades de CD-ROM, unidades de DVD, dispositivos de fibra

óptica o transmisores) instalados, tenga en cuenta lo siguiente:

• No quite las cubiertas. Si quita las cubiertas del producto láser, podría quedar expuesto a radiación

láser peligrosa. Dentro del dispositivo no existe ninguna pieza que requiera servicio técnico.

• Si usa controles o ajustes o realiza procedimientos que no sean los especificados aquí, podría

exponerse a radiaciones peligrosas.

PELIGRO

26 P520c Hardware Maintenance Manual

Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo

Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con

instrumentos ópticos, y evite exponerse directamente al rayo láser.

≥18 kg ≥32 kg ≥55 kg

PRECAUCIÓN:

Adopte procedimientos seguros al levantar el equipo.

PRECAUCIÓN:

El botón de control de alimentación del dispositivo y el interruptor de alimentación de la fuente de

alimentación no desconectan la corriente eléctrica suministrada al dispositivo. Además, el dispositivo

podría tener más de un cable de alimentación. Para suprimir toda la corriente eléctrica del dispositivo,

asegúrese de que todos los cables de alimentación estén desconectados de la toma de corriente.

Chapter 1.Read this first: Important safety information 27

28 P520c Hardware Maintenance Manual

Chapter 2. Product overview

This chapter provides basic information to help you get familiar with your computer.

Hardware locations

This section provides information about the locations of your computer hardware.

Front view

Note: The computer hardware might look slightly different from the illustration.

Figure 1. Front connectors, controls, and indicators

1 Optical-drive eject/close button (available on some

models)

2 USB 3.0 connectors (2)

3 Storage drive activity indicator 4 Power button

5 Power indicator 6 Microphone connector

7 Headphone connector 8 SD card slot

1 Optical-drive eject/close button

Press the button to eject or close the tray of the optical drive.

2 USB 3.0 connectors (2)

Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or

printer.

3 Storage drive activity indicator

This indicator shows the status of the internal storage drives (such as hard disk drives or solid-state drives).

On: The storage drives are active and data is being transferred.

Off (when the computer is powered on): The storage drives are not in use or no data is being transferred.

4 Power button

Press the power button to turn on your computer. If your computer is unresponsive, you can turn off the

computer by pressing and holding the power button for four or more seconds.

5 Power indicator

When the power indicator is on, the computer is turned on.

6 Microphone connector

Connect the microphone to your computer through the microphone connector.

7 Headphone connector

Connect the headphone to your computer through the headphone connector.

8 SD card slot

Insert a secure digital (SD) card into the slot to access the data on the card.

Rear view

Some connectors on the rear of your computer are color-coded to help you determine where to connect the

cables on your computer.

Note: The computer hardware might look slightly different from the illustration.

30 P520c Hardware Maintenance Manual

Figure 2. Rear view

1 Security-lock slot 2 Ethernet connector

3 Padlock loop 4 Serial connector (available on some models)

5 Audio line-in connector 6 PCIe card area*

7 Audio line-out connector 8 Microphone connector

9 USB 2.0 connectors (2) 10 USB 3.0 connectors (4)

11 Serial connector (available on some models) 12 PS/2 keyboard connector

13 PS/2 mouse connector 14 Power-cord connector

Notes:

• * A discrete graphics card or a network adapter can be installed in the appropriate Peripheral Component

Interconnect Express (PCIe) card slot. If such a card is installed, use the connectors on the card instead of

the corresponding connectors on the computer to optimize the performance.

• Depending on your computer model, the preinstalled cards might vary. One or more graphics cards might

be installed to provide the following connectors:

– DisplayPort® connector

– Digital Visual Interface (DVI) connector

– Mini DisplayPort® connector

Chapter 2.Product overview 31

DisplayPort connector

Use this connector to attach a high-performance monitor, a direct-drive monitor, or other compatible

devices.

DVI monitor connector

Use this connector to attach a DVI monitor or other compatible devices.

Mini DisplayPort connector

Use this connector to attach a high-performance monitor, a direct-drive monitor, or other compatible

devices. The Mini DisplayPort connector is a miniaturized version of a DisplayPort connector.

1 Security-lock slot

Attach a Kensington-style cable lock to the security-lock slot to secure your computer. For more information,

see “Attaching a Kensington-style cable lock” on page 59.

2 Ethernet connector

Connect an Ethernet cable for a local area network (LAN).

Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use a

Category 5 Ethernet cable.

3 Padlock loop

Attach a padlock to secure your computer. For more information, see “Locking the computer cover” on page

59.

4 11 Serial connector (available on some models)

Connect an external modem, a serial printer, or other devices that use a 9-pin serial connector to the serial

connector.

5 Audio line-in connector

The audio line-in connector is used to receive audio signals from an external audio device, such as a stereo

system. When you attach an external audio device, a cable connection is established between the audio line-

out connector of the device and the audio line-in connector of the computer.

6 PCIe card area

To further improve the computer performance, you can install PCIe cards into this area. Depending on your

computer model, the preinstalled cards might vary.

7 Audio line-out connector

The audio line-out connector is used to send audio signals from the computer to external devices, such as

headphones.

8 Microphone connector

Use this connector to attach a microphone to your computer when you want to record sound or if you use

speech-recognition software.

32 P520c Hardware Maintenance Manual

9 USB 2.0 connector(2)

Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or

printer.

10 USB 3.0 connector(4)

Use this connector to attach a USB-compatible device, such as a USB keyboard, mouse, storage drive, or

printer.

12 PS/2 keyboard connector

Use this connector to attach a Personal System/2 (PS/2) keyboard.

13 PS/2 mouse connector

Use this connector to attach a PS/2 mouse, a trackball, or other pointing devices.

14 Power-cord connector

Connect the power cord to your computer for power supply.

Computer components

Notes:

• Depending on the model, your computer might look slightly different from the illustration.

• To remove the computer cover, see “Preparing your computer and removing the computer cover” on

page 97.

Chapter 2.Product overview 33

Figure 3. Component locations

1 Heat-sink-and-fan assembly 2 Memory module

3 Optical drive (available on some models) 4 Card reader

5 Front audio and USB assembly 6 Front bezel

7 M.2 solid-state drive assembly (available on some

models)

8 Front fan assembly

9 Storage drives 10 Graphics card (available on some models)

11 Cover presence switch (also called intrusion switch)

(available on some models)

12 Rear fan assembly

13 Power supply assembly

Major FRUs and CRUs

This section introduces the location of FRUs and Customer Replaceable Units (CRUs) in the computer, and

identifies which FRUs are also self-service CRUs or optional-service CRUs.

Notes:

• Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by

trained service technicians at an additional cost.

• Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill

level. Trained service technicians can also provide service to install or replace the parts under the type of

warranty designated for the customer’s machine.

• FRUs: Refer to parts that must be installed or replaced only by trained service technicians. If customers

choose to replace the FRUs by themselves, the product warranty might be affected.

This chapter includes the following topics:

34 P520c Hardware Maintenance Manual

1. “Major FRUs and CRUs” on page 35

2. “Accessories” on page 37

3. “FRUs in the flex module” on page 38

4. “FRUs in the multi-drive conversion kit” on page 39

Major FRUs and CRUs

Figure 4. Major FRUs and CRUs

Chapter 2.Product overview 35

Number Description Self-service CRU Optional-service CRU

1Front fan assembly (available on some models) No Yes

2Card reader No No

3Front audio and USB assembly No No

4Front bezel Yes No

5Power button Yes No

6Front-access storage enclosure (available on

some models)

No Yes

75.25-inch flex module (available on some

models), see “FRUs in the flex module” on page

38.

Yes No

8Optical drive (available on some models) Yes No

9Slim-optical drive adapter (available on some

models)

Yes No

10 Multi-drive conversion kit (available on some

models), see “FRUs in the multi-drive conversion

kit” on page 39.

Yes No

11 Thermal sensor (available on some models) No No

12 Internal speaker No No

13 Front Wi-Fi antenna (available on some models) No No

14 Computer cover Yes No

15 System board No No

16 Memory module Yes No

17 Microprocessor No No

18 Coin-cell battery No Yes

19 Hybrid drive (available on some models) Yes No

20 Hard disk drive (available on some models) Yes No

21 Solid-state drive (available on some models) Yes No

22 M.2 solid-state drive (available on some models) No No

23 M.2 solid-state drive heat sink (available on some

models)

No No

24 Wi-Fi card module (available on some models) No No

25 Wi-Fi adapter card (available on some models) No No

26 Rear Wi-Fi antenna (available on some models) No No

27 PCIe card (available on some models) Yes No

28 Heat-sink-and-fan assembly No Yes

29 Power supply assembly No Yes

30 Cover presence switch (also called intrusion

switch) (available on some models)

No No

36 P520c Hardware Maintenance Manual

Number Description Self-service CRU Optional-service CRU

31 Rear fan assembly No Yes

aLenovo factory recovery USB key No No

bLenovo recovery disc set No No

cMiscellaneous parts kits No No

dPower cord Yes No

eKeyboard Yes No

fMouse Yes No

Accessories

Figure 5. Accessories

Number FRU description Self-service CRU Optional-service CRU

aLenovo factory recovery USB key No No

bPower cord Yes No

cLenovo recovery disc set No No

dKeyboard Yes No

eMouse Yes No

fMiscellaneous parts kits No No

Chapter 2.Product overview 37

FRUs in the flex module

Figure 6. FRUs in the flex module

Number FRU description Self-service CRU Optional-service CRU

1Flex module Yes No

2eSATA connector No No

3IEEE 1394 connector No No

4USB-C connector No No

5Front Thunderbolt adapter kit No No

615-in-1 card reader No No

7Slim optical drive No No

38 P520c Hardware Maintenance Manual

FRUs in the multi-drive conversion kit

Figure 7. FRUs in the multi-drive conversion kit

Number FRU description Self-service CRU Optional-service CRU

1Multi-drive conversion kit Yes No

2Slim optical drive No No

3Slim optical drive bracket No No

43.5-inch storage drive No No

52.5-inch storage drive with the conversion

bracket

No No

For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go

to:

http://www.lenovo.com/serviceparts-lookup

Parts on the system board

The following illustration shows the locations of the parts on the system board.

Note: The system board might look slightly different from the illustration.

Chapter 2.Product overview 39

Figure 8. System board part locations

1 4-pin power connector 2 Memory slot

3 Memory slot 4 Microprocessor fan connector

5 Microprocessor 6 Memory slot

7 Memory slot 8 Flex bay 1 fan connector

9 Flex bay 2 fan connector 10 Thermal sensor connector

11 4-pin SATA power connector 12 14-pin power connector

13 4-pin SATA power connector 14 M.2 solid-state drive slot 1

15 M.2 solid-state drive slot 2 16 VROC connector

17 Front-fan connector 18 Clear CMOS /Recovery jumper

19 Coin-cell battery 20 SATA 4 connector

21 SATA 2 connector 22 SATA 1 connector

23 SATA 3 connector 24 Thunderbolt™ control connector

25 SATA 7 connector (eSATA connector) 26 Front-bezel connector (for connecting LED indicators

and the power button)

27 USB 2.0 connector (for connecting the Wi-Fi

connector or 9-in-1 card reader connector)

28 Front USB 3.0 connector (for connecting USB

connectors on the front panel)

29 Internal USB 3.0 connector 30 Storage-drive activity indicator connector

31 Four-digit-diagnostics display connector 32 Trusted Cryptography Module (TCM) connector

33 Internal-speaker connector 34 Front-audio connector

40 P520c Hardware Maintenance Manual

35 PCIe x4 card slot 36 PCIe x16 card slot

37 PCIe x8 card slot 38 PCIe x16 card slot (graphics card available on some

models)

39 Cover presence switch connector (intrusion switch

connector)

40 Rear-fan connector

41 SATA Serial (COM) connector

Internal storage drives

Internal storage drives are devices that your computer uses to read and store data. You can add drives to

your computer to increase storage capacity and enable your computer to read other types of media. Internal

storage drives are installed in bays.

When you install or replace an internal storage drive, note the type and size of the drive that each bay

supports and correctly connect the required cables. Refer to the appropriate section in “Removing and

installing hardware” on page 98 for instructions on how to install or replace internal storage drives for your

computer.

The following illustration shows the locations of the storage drive bays.

Note: The computer hardware might look slightly different from the illustration.

Figure 9. Storage drive bay locations

1 Primary flex bay 2 Secondary flex bay (available on some models)

3 SD card slot 4 Secondary storage drive bay

5 Primary storage drive bay 6 PCIe card slots (4)

7 M.2 solid-state drive slots (2)

Chapter 2.Product overview 41

1 2 Flex bays (2)

Depending on your computer model, the following devices might be installed in the flex bays:

• Flex module

Depending on your computer model, the following parts might be preinstalled in the flex module:

– 15-in-1 card reader

– External Serial Advanced Technology Attachment (eSATA) connector

– Four-digit diagnostics display

– Institute of Electrical and Electronics Engineers (IEEE) 1394 connector

– Slim optical drive

– Front Thunderbolt adapter kit

– USB-C connector

• Front-access storage enclosure

• Multi-drive conversion kit

Depending on your computer model, the following parts might be preinstalled in the multi-drive

conversion kit:

– Storage drive (such as hard disk drive, solid-state drive, or hybrid drive)

– Slim optical drive

• Optical drive

• Slim-optical-drive adapter

3 SD card slot

An SD card is installed in some models.

4 5 Storage drive bays (2)

You can install hard disk drives, solid-state drives, or hybrid drives in the storage drive bays.

6 PCIe card slots (4)

You can install compatible PCIe cards and PCIe solid-state drives in the PCIe card slots.

7 M.2 solid-state drive slots (2)

One or two M.2 solid state drives are installed in some models.

Machine type and model label

The machine type and model label identifies your computer. When you contact Lenovo for help, the machine

type and model information helps support technicians to identify your computer and provide faster service.

The following is a sample of the machine type and model label.

Note: The computer hardware might look slightly different from the illustration.

42 P520c Hardware Maintenance Manual

Figure 10. Machine type and model label

Computer features

For your specific computer model, some features might vary or not apply.

Information about your computer

• To view basic information (such as microprocessor and memory information) about your computer, do the

following:

1. Click the Start button to open the Start menu.

2. Click Settings ➙ System ➙ About.

• To view detailed information about the devices (such as the optical drive and network adapters) on your

computer, do the following:

1. Right-click the Start button to open the Start context menu.

2. Click Device Manager.

3. Locate and double-click your device in Device Manager to view device properties. Type the

administrator password or provide confirmation if prompted.

Memory

Your computer supports up to four double data rate 4 (DDR4) error correction code (ECC) registered dual

inline memory modules (RDIMMs).

Chapter 2.Product overview 43

Storage drives

Your computer supports the following storage drives:

• Hard disk drive

• Hybrid drive (available on some models)

• M.2 solid-state drive (available on some models)

• Optical drive (available on some models)

• SD card (available on some models)

• Solid-state drive (available on some models)

To view the amount of storage drive space, do the following:

1. Right-click the Start button to open the Start context menu.

2. Click Disk Management and follow the instructions on the screen.

Video features

• PCIe x16 card slots on the system board for a discrete graphics card

• Video connectors on a discrete graphics card:

– DVI connector (available on some models)

– DisplayPort connector (available on some models)

– Mini DisplayPort connector (available on some models)

Audio features

Integrated audio controller supports the following connectors and devices on your computer:

• Audio line-in connector

• Audio line-out connector

• Internal speaker

• Microphone connector

Input/Output (I/O) features

• 100/1000 Mbps Ethernet connector

• 9-pin serial connector

• Audio connectors (audio line-in connector, audio line-out connector, and microphone connector)

• Display connectors (DisplayPort connector, DVI connector, and Mini DisplayPort connector) (vary by

graphics card)

• eSATA connector

• Institute of Electrical and Electronics Engineer (IEEE) 1394 connector (available on some models)

• PS/2 keyboard connector

• PS/2 mouse connector

• SATA connectors

• USB connectors

• USB-C connector (available on some models)

Expansion

• Flex bay

44 P520c Hardware Maintenance Manual

• M.2 solid-state drive slots

• Memory slots

• PCIe x4 card slot

• PCIe x8 card slot

• PCIe x16 card slots

• SD card slot

• Storage drive bays

Power supply

500-watt automatic 92% voltage-sensing power supply

Wireless features

Depending on your computer model, the following wireless features are supported:

• Wireless LAN

• Bluetooth

System management features

• Ability to store power-on self-test (POST) hardware test results

• Desktop Management Interface (DMI)

Desktop Management Interface provides a common path for users to access information about all

aspects of a computer. The information includes the processor type, installation date, attached printers

and other peripherals, power sources, and maintenance history.

• ErP LPS compliance mode

The energy-related products directive (ErP) lowest power state (LPS) compliance mode reduces the

consumption of electricity when your computer is in sleep or off mode. For more information, see

“Enabling or disabling the ErP LPS compliance mode” on page 64.

• Intel® Standard Manageability (ISM)

Intel Standard Manageability builds certain functionalities into computer hardware and firmware.

Therefore, computers are less expensive for businesses and easier to monitor, maintain, update, upgrade,

and repair.

• Intel Active Management Technology (Intel AMT)

With specific Intel platform capabilities and third-party management and security applications, Intel Active

Management Technology enables IT administrators or managed service providers to easily and remotely

discover, repair, and protect their networked computing assets.

• Intel Rapid Storage Technology enterprise (Intel RSTe)

The Intel RSTe configuration utility enables you to configure Redundant Array of Independent Disks (RAID)

for computers with specific Intel chipset system boards. It supports RAID levels 0, 1, 5, and 10 on

computers installed with Serial Advanced Technology Attachment (SATA) devices.

• Preboot Execution Environment (PXE)

Preboot Execution Environment enables you to start computers using a network interface. This manner is

independent of starting computers from data storage devices (such as the hard disk drive) or installed

operating systems.

• System Management (SM) basic input/output system (BIOS) and SM software

The SM BIOS specification defines data structures and access methods in a BIOS. Therefore, a user or an

application can store and retrieve information specific about the computer in question.

Chapter 2.Product overview 45

• Wake on LAN (WOL)

Wake on LAN is an Ethernet computer networking standard that allows a computer to be turned on or

woken up by a network message. The message is usually sent by a program running on another computer

on the same local area network.

• Windows Management Instrumentation (WMI)

Windows Management Instrumentation is a set of extensions to the Windows Driver Model. It provides an

operating system interface through which instrumented components provide information and notification.

Security features

• Ability to enable and disable a device

• Ability to enable and disable USB connectors individually

• Antivirus program

• BIOS passwords and Windows accounts to deter unauthorized use of your computer

• Computrace Agent software embedded in firmware

• Cover presence switch (also called intrusion switch)

• Finger authentication (available on some models)

• Firewalls

• Intel BIOS guard

• Startup sequence control

• Startup without a keyboard or mouse

• Support for a computer cover lock

• Support for a Kensington-style cable lock

• Support for a padlock

• Trusted Platform Module (TPM)

Preinstalled operating system

Your computer is preinstalled with the Windows 10 operating system. Additional operating systems might be

identified by Lenovo as compatible with your computer. To determine if an operating system has been

certified or tested for compatibility, check the Web site of the operating system provider.

Computer specifications

This section lists the physical specifications for your computer.

Dimensions

• Width: 175 mm (6.89 inches)

• Height: 375.5 mm (14.78 inches)

• Depth: 426 mm (16.77 inches)

Weight

Maximum configuration as shipped: 14.5 kg (31.97 lb)

Environment

• Air temperature:

Operating: From 10°C (50°F) to 35°C (95°F)

46 P520c Hardware Maintenance Manual

Storage in original shipping package: From -40°C (-40°F) to 60°C (140°F)

Storage without package: From -10°C (14°F) to 60°C (140°F)

• Humidity:

Operating: 10%–80% (non-condensing)

Storage: 10%–90% (non-condensing)

• Altitude:

Operating: From -15.2 m (-50 ft) to 3048 m (10 000 ft)

Storage: From -15.2 m (-50 ft) to 10 668 m (35 000 ft)

Electrical input

• Input voltage: From 100 V ac to 240 V ac

• Input frequency: 50/60 Hz

Programs

This section provides information about the programs on your computer.

Accessing a program on your computer

To access a program on your computer, do one of the following:

• From Windows Search:

1. Type the program name into the search box next to the Start button.

2. In the search results, click the name of the desired program to launch the program.

• From the Start menu or Control Panel:

1. Click the Start button to open the Start menu. Then, click the name of the desired program to launch

the program.

2. If the program name is not displayed on the Start menu, access the program from Control Panel.

a. Click the Start button to open the Start menu.

b. Click Windows System ➙ Control Panel.

c. View Control Panel by Large icons or Small icons, and then click the name of the desired program

to launch the program.

An introduction to Lenovo programs

This section provides information about the major Lenovo programs available on your operating system.

Note: Depending on your computer model, some of the following programs might not be available.

Chapter 2.Product overview 47

• Lenovo Vantage

Your computer’s best features and capabilities should be easy to access and understand. With Lenovo

Vantage, they are.

Use Lenovo Vantage to do the following:

– Know the device status easily and customize device settings.

– Download and install UEFI BIOS, firmware, and driver updates to keep your computer up-to-date.

– Monitor your computer health, and secure your computer against outside threats.

– Look up warranty status (online).

– Access User Guide and helpful articles.

Notes:

– The available features vary depending on the computer model.

– Lenovo Vantage makes periodic updates of the features to keep improving your experience with your

computer. The description of features might be different from that on your actual user interface.

• ThinkStation Diagnostics

The ThinkStation Diagnostics program enables you to troubleshoot and resolve computer problems. The

program notifies you of any issues detected by the real-time hardware diagnostic monitoring function. The

program also provides the details of the issue, analyzes possible causes, and provides solutions.

48 P520c Hardware Maintenance Manual

Chapter 3. Using your computer

This chapter provides information to help you use the various features provided by your computer.

Registering your computer

When you register your computer with Lenovo, you enter required information into a Lenovo database. The

information enables Lenovo to contact you when there is a recall or other severe problem and provide

quicker service when you call Lenovo for help. In addition, some locations offer extended privileges and

services to registered users.

To register your computer with Lenovo, go to https://support.lenovo.com/productregistration and follow the

instructions on the screen.

Setting the computer volume

To set the computer volume, do the following:

1. Click the volume icon in the Windows notification area on the taskbar.

Note: If the volume icon is not displayed in the Windows notification area, add the icon to the

notification area. See the Windows help system.

2. Follow the instructions on the screen and the hover text to adjust the volume, mute the speaker, or

unmute the speaker.

Using a disc

This section provides instructions on how to use a disc and the optical drive.

Guidelines about using the optical drive

When using the optical drive, follow these guidelines:

• Do not place the computer in a location where the drive is exposed to any of the following conditions:

– High temperature

– High humidity

– Excessive dust

– Excessive vibration or sudden shock

– An inclined surface

– Direct sunlight

• Do not insert any object other than a disc into the drive.

• Do not insert damaged discs into the drive. Warped, scratched, or dirty discs can damage the drive.

• Before moving the computer, remove the disc from the drive.

Handling and storing a disc

When handling and storing a disc, follow these guidelines:

• Hold the disc by its edges. Do not touch the surface of the side that is not labeled.

• To remove dust or fingerprints, wipe the disc with a clean, soft cloth from the center to the outside. Wiping

the disc in a circular direction might cause loss of data.

• Do not write or stick paper on the disc.

• Do not scratch or mark the disc.

• Do not place or store the disc in direct sunlight.

• Do not use benzene, thinners, or other cleaners to clean the disc.

• Do not drop or bend the disc.

Playing and removing a disc

To play a disc, do the following:

1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides out of

the drive.

2. Insert a disc into the tray. Some optical drive has a snap hub in the center of the tray. If your drive has a

snap hub, support the tray with one hand and then push the center of the disc until it snaps into place.

3. Press the eject/close button again or gently push the tray forward to close the tray. The disc player

program starts automatically. For more information, refer to the help system of the disc player program.

To remove a disc from the optical drive, do the following:

1. With the computer on, press the eject/close button on the front of the optical drive. The tray slides out of

the drive.

2. Carefully remove the disc from the tray.

3. Press the eject/close button again or gently push the tray forward to close the tray.

Note: If the tray does not slide out of the drive when you press the eject/close button, turn off your

computer. Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject/close

button. Use the emergency eject only in an emergency.

Recording a disc

If your optical drive supports recording, you can record a disc.

Recording a disc using Windows tools

To record a disc using Windows tools, do one of the following:

• Burn a disc using the AutoPlay window.

1. Ensure that the disc is played automatically.

a. Click the Start button to open the Start menu.

b. Click Settings ➙ Devices ➙ AutoPlay.

c. Select or turn on Use AutoPlay for all media and devices.

2. Insert a recordable disc into the optical drive that supports recording. The AutoPlay window opens.

3. Follow the instructions on the screen.

• Burn a disc using Windows Media® Player.

1. Insert a recordable disc into the optical drive that supports recording.

2. Open Windows Media Player. See “Accessing a program on your computer” on page 47.

3. Follow the instructions on the screen.

• Burn a disc from an ISO file.

50 P520c Hardware Maintenance Manual

1. Insert a recordable disc into the optical drive that supports recording.

2. Double-click the ISO file.

3. Follow the instructions on the screen.

Recording a disc using preinstalled programs

To record a disc using preinstalled programs, do the following:

1. Insert a recordable disc into the optical drive that supports recording.

2. Open the PowerDVD Create, PowerProducer, or Power2Go program. See “Accessing a program on

your computer” on page 47.

3. Follow the instructions on the screen.

Connecting to a network

This section provides instructions on how to connect to a network.

Connecting to an Ethernet LAN

You can connect your computer to an Ethernet LAN by connecting an Ethernet cable to the Ethernet

connector.

DANGER

To avoid the risk of electrical shock, do not connect the telephone cable to the Ethernet connector.

Connecting to a wireless LAN

You can connect your computer to a wireless LAN without the use of an Ethernet cable but by means of

radio waves only.

Note: The wireless LAN feature is available only on some models.

To establish a wireless-LAN connection, do the following:

1. Ensure that a wireless LAN is available and the wireless LAN feature on your computer is working.

2. Click the wireless-network-connection-status icon in the Windows notification area to display available

wireless networks.

Note: If the wireless-network-connection-status icon is not displayed in the Windows notification area,

add the icon to the notification area. See the Windows help system.

3. Click a wireless LAN, and then click Connect to connect your computer to it. Provide required

information if needed.

Connecting to a Bluetooth-enabled device

Bluetooth is a short-range wireless communications technology. Use Bluetooth to establish a wireless

connection between your computer and another Bluetooth-enabled device within a distance of about 10 m

(32.8 ft).

Note: The Bluetooth feature is available only on some models.

To connect to a Bluetooth-enabled device, do the following:

1. Turn on the Bluetooth feature of your computer. Ensure that the Bluetooth-enabled device is located

within a distance of about 10 m (32.8 ft) from your computer.

Chapter 3.Using your computer 51

2. Click the Bluetooth icon in the Windows notification area on the taskbar. Then, click Add a Device and

follow the instructions on the screen.

Note: If the Bluetooth icon is not displayed in the Windows notification area, add the icon to the

notification area. See the Windows help system.

52 P520c Hardware Maintenance Manual

Chapter 4. You and your computer

This chapter provides information about accessibility, ergonomic, and cleaning and maintenance.

Arranging your workspace

Arrange your workspace to suit your needs and the kind of work you do. This section provides information

about the factors that affect the way you arrange your workspace.

Glare and lighting

Position the monitor to minimize glare and reflections from overhead lights, windows, and other light

sources. Reflected light from shiny surfaces can cause annoying reflections on your screen. When possible,

place the monitor at right angles to windows and other light sources. If necessary, reduce overhead lighting

by turning off lights or using lower wattage bulbs. If you install the monitor near a window, use curtains or

blinds to block the sunlight. You can adjust the brightness and contrast controls on the monitor as the room

lighting changes throughout the day.

Where it is impossible to avoid reflections or to adjust the lighting, an antiglare filter placed over the screen

might be helpful. However, these filters might affect the clarity of the image on the screen; try them only after

you have exhausted other methods of reducing glare.

Air circulation

Your computer produces heat. The computer has a fan that pulls in fresh air and forces out hot air through

the air vents. Blocking the air vents can cause overheating, which might result in a malfunction or damage.

Position the computer so that nothing blocks the air vents; usually, 51 mm (2 inches) of air space is sufficient.

Ensure that the vented air is not blowing on people.

Electrical outlet locations and cable lengths

The following factors might determine the final placement of your computer:

• Locations of electrical outlets

• Length of power cords or power adapters

• Length of the cables that are connected to other devices

For more information about power cords or power adapters, see “Power cords and power adapters” on page

Comfort

Although no single working position is ideal for everyone, here are a few guidelines to help you find a position

that suits you best. The following figure sets an example for your reference.

• Screen position: Keep the screen at a comfortable viewing distance, usually 51–61 cm (20–24 inches).

Then, adjust the screen so that the top of the screen is at or slightly below eye level and you can view it

without twisting your body.

• Chair position: Use a chair that gives you good back support and seat height adjustment. Use chair

adjustments to best suit your desired posture.

• Head position: Keep your head and neck in a comfortable and neutral (vertical or upright) position.

• Arm and hand positions: Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)

position. Type with a soft touch without pounding the keys.

• Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.

Make minor modifications in your working posture to deter the onset of discomfort caused by long periods of

working in the same position. Frequent short breaks from your work also help to prevent minor discomfort

associated with your working posture.

Accessibility information

Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater

access to information and technology. This section provides information about the ways these users can get

the most out of their computer experience. You also can get the most up-to-date accessibility information

from the following Web site:

https://www.lenovo.com/accessibility

Keyboard shortcuts

The following list contains keyboard shortcuts that can help make your computer easier to use.

Note: Depending on your keyboard, some of the following keyboard shortcuts might not be available.

• Windows logo key + U: Open Ease of Access Center

• Right Shift for eight seconds: Turn on or turn off Filter Keys

• Shift five times: Turn on or turn off Sticky Keys

• Num Lock for five seconds: Turn on or turn off Toggle Keys

• Left Alt+Left Shift+Num Lock: Turn on or turn off Mouse Keys

• Left Alt+Left Shift+PrtScn (or PrtSc): Turn on or turn off High Contrast

For more information, go to https://windows.microsoft.com/, and then search using any of the following

keywords: keyboard shortcuts, key combinations, shortcut keys.

Ease of Access Center

Ease of Access Center on the Windows operating system enables you to configure your computer to suit

your physical and cognitive needs.

54 P520c Hardware Maintenance Manual

To use Ease of Access Center, do the following:

1. Click the Start button to open the Start menu.

2. Click Settings ➙ Ease of Access.

3. Choose the appropriate tool by following the instructions on the screen.

Ease of Access Center mainly includes the following tools:

• Magnifier

Magnifier is a useful utility that enlarges the entire screen or part of the screen so that you can see the

items better.

• Narrator

Narrator is a screen reader that reads aloud what is displayed on the screen and describes events such as

error messages.

• On-Screen Keyboard

To input data into your computer using a mouse, joystick, or other pointing devices instead of a physical

keyboard, you can use On-Screen Keyboard.

• High Contrast

High Contrast is a feature that heightens the color contrast of some text and images on your screen. As a

result, those items are more distinct and easier to identify.

• Personalized keyboard

Adjust keyboard settings to make your keyboard easier to use. For example, you can use your keyboard

to control the pointer and type certain key combinations easier.

• Personalized mouse

Adjust mouse settings to make your mouse easier to use. For example, you can change the pointer

appearance and make it easier to manage windows with the mouse.

Speech Recognition

Speech Recognition enables you to control your computer by voice.

Using only your voice, you can start programs, open menus, click objects on the screen, dictate text into

documents, and write and send e-mails. Everything you do with the keyboard and mouse can be done with

only your voice.

To use Speech Recognition, do the following:

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Speech Recognition.

4. Follow the instructions on the screen.

Screen-reader technologies

Screen-reader technologies are primarily focused on software program interfaces, help information systems,

and various online documents. For additional information about screen readers, see the following:

• Using PDFs with screen readers:

https://www.adobe.com/accessibility.html?promoid=DJGVE

• Using the JAWS screen reader:

https://www.freedomscientific.com/Products/Blindness/JAWS

• Using the NVDA screen reader:

Chapter 4.You and your computer 55

https://www.nvaccess.org/

Screen resolution

You can make the text and images on your screen easier to read by adjusting the screen resolution of your

computer.

To adjust the screen resolution, do the following:

1. Right-click a blank area on the desktop.

2. Click Display settings ➙ Display.

3. Follow the instructions on the screen.

Note: Setting the resolution too low might prevent some items from fitting on the screen.

Customizable item size

You can make the items on your screen easier to read by changing the item size.

• To change the item size temporarily, use the Magnifier tool in Ease of Access Center.

• To change the item size permanently, do the following:

– Change the size of all the items on your screen. Do the following:

1. Right-click a blank area on the desktop.

2. Click Display settings ➙ Display.

3. Follow the on-screen instructions to change the item size. For some applications, your

configuration might not take effect until you sign out and then sign in again.

– Change the size of the items on a Web page.

Press and hold Ctrl, and then press the plus-sign key (+) to enlarge or the minus-sign key (-) to reduce

the text size.

– Change the size of the items on the desktop or a window.

Note: This function might not work on some windows.

If your mouse has a wheel, press and hold Ctrl, and then scroll the wheel to change the item size.

Industry-standard connectors

Your computer provides industry-standard connectors that enable you to connect assistive devices.

For more information about the location and function of each connector, see “Hardware locations” on page

29.

TTY/TDD conversion modem

Your computer supports the use of a text telephone (TTY) or the telecommunications device for the deaf

(TDD) conversion modem. The modem must be connected between your computer and a TTY/TDD

telephone. Then, you can type a message on your computer and send it to the telephone.

Documentation in accessible formats

Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or

HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure that

visually impaired users can read the documentation through a screen reader. Each image in the

documentation also includes adequate alternative text so that visually impaired users can understand the

image when they use a screen reader.

56 P520c Hardware Maintenance Manual

Cleaning your computer

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1. Properly remove or install your computer cover.

See Chapter 9 “Hardware removal and installation” on page 97.

CAUTION:

Remove any media from the drives and turn off all connected devices and the computer. Then,

disconnect all power cords from electrical outlets and disconnect all cables that are connected to the

computer.

It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free

operation. Use only mild cleaning solutions and a damp cloth to clean the painted surfaces of the computer.

Dust buildup compounds problems associated with glare, so remember to clean the screen periodically.

Wipe the screen surface gently with a soft, dry cloth, or blow on the screen to remove grit and other loose

particles. Depending on the type of the screen, moisten a soft, lint-free cloth with an LCD cleaner or liquid

glass cleaner and then wipe the screen surface.

Maintenance

With appropriate care and maintenance, your computer will serve you reliably. This section provides

instructions on how to maintain your computer so that it can keep working in better condition.

Basic maintenance tips

Here are some basic points about keeping your computer functioning properly:

• Keep your computer in a clean, dry environment. Ensure that the computer rests on a flat, steady surface.

• Do not cover any of air vents. These air vents provide airflow to keep your computer from overheating.

• Keep food and drinks away from all parts of your computer. Food particles and spills might make the

keyboard and mouse stick and unusable.

• Do not get the power switches or other controls wet. Moisture can damage these parts and cause an

electrical hazard.

• Always disconnect a power cord by grasping the plug instead of the cord.

Good maintenance practices

By performing a few good maintenance practices, you can maintain good computer performance, protect

your data, and be prepared in case of a computer failure.

• Empty your recycle bin on a regular basis.

• Use the disk defragmentation or disk optimization feature of your operating system occasionally to

prevent performance problems caused by an excessive number of fragmented files.

• Clean out your Inbox, Sent Items, and Deleted Items folders in your e-mail application on a regular basis.

• Back up critical data regularly on removable media memory, such as discs and USB storage devices, and

store the removable media in a safe location. The frequency of making backup copies depends on how

critical the data is to you or your business.

• Back up your data on the storage drive regularly. See “Recovery information” on page 87.

• Keep your computer software, device drivers, and operating system up-to-date. See “Keeping your

computer current” on page 58.

Chapter 4.You and your computer 57

• Keep a log book. Entries might include major software or hardware changes, device-driver updates,

intermittent problems and what you did to resolve them, and other issues you might have experienced.

The cause of a problem might be change in hardware, change in software, or any other actions that might

have taken place. A log book can help you or a Lenovo technician determines the cause of a problem.

• Create Product Recovery discs. See “Recovery information” on page 87 for more information about using

Product Recovery discs to restore the hard disk drive to the factory-default settings.

Keeping your computer current

In most cases, it is a good practice to have the most up-to-date operating system update patches, software

programs, and device drivers. This section provides instructions on how to get the latest updates for your

computer.

Getting the latest system updates

To get the latest system updates for your computer, ensure that your computer is connected to the Internet

and do one of the following:

• Open Lenovo Vantage to check the available update packages. If the latest update package is available,

follow the on-screen instructions to download and install the package.

To open the Lenovo Vantage program, see “Accessing a program on your computer” on page 47.

• Use Windows Update to get the system updates, such as security fixes, new versions of Windows

components, and device driver updates.

1. Click the Start button to open the Start menu.

2. Click Settings ➙ Update & Security ➙ Windows Update.

3. Follow the instructions on the screen.

Note: The device drivers provided by Windows Update might not be tested by Lenovo. It is recommended

that you get device drivers by using Lenovo programs or from the Lenovo Web site at https://

support.lenovo.com.

Moving your computer

Before moving your computer, take the following precautions:

1. Back up your data on the storage drive. See “Good maintenance practices” on page 57.

2. Remove any media from the drives and turn off all connected devices and the computer. Then,

disconnect all power cords from electrical outlets and disconnect all cables that are connected to the

computer.

3. If you saved the original shipping cartons and packing materials, use them to pack the units. If you are

using different cartons, cushion the units to avoid damage.

Moving your computer to another country or region

When you move your computer to another country or region, you must take local electrical standards into

consideration. If the local electrical outlet style is different from the type you are using, use either an electrical

plug adapter or a new power cord. To purchase such items, contact the Lenovo Customer Support Center.

For a list of Lenovo Support phone numbers, go to https://pcsupport.lenovo.com/supportphonelist. If you

cannot find the support telephone number for your country or region, contact your Lenovo reseller.

58 P520c Hardware Maintenance Manual

Chapter 5. Security

This chapter provides information about how to protect your computer from unauthorized use.

Locking your computer

This section provides instructions on how to lock your computer with the locking devices to keep your

computer safe.

Locking the computer cover

Locking the computer cover helps prevent unauthorized people from gaining access to the inside of your

computer. Your computer comes with a padlock loop so that the computer cover cannot be removed when a

padlock is installed.

Note: The computer hardware might look slightly different from the illustration.

Figure 11. Installing a padlock

Attaching a Kensington-style cable lock

You can use a Kensington-style cable lock to secure your computer to a desk, table, or other non-permanent

fixture. The cable lock attaches to the security-lock slot at the rear of your computer. Depending on the type

selected, the cable lock can be operated with a key or combination. The cable lock also locks the buttons

used to open the computer cover. This is the same type of lock used with many notebook computers. You

can order such a cable lock directly from Lenovo by searching for Kensington at:

http://www.lenovo.com/support

Note: The computer hardware might look slightly different from the illustration.

Figure 12. Kensington-style cable lock

Viewing and changing security settings in the Setup Utility program

To view and change security settings in the Setup Utility program, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Security.

3. Follow the instructions on the right side of the screen to view and change security settings. You can refer

to “Using the Setup Utility program” on page 63 to get basic information about some major security

settings.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Using passwords and Windows accounts

You can use BIOS passwords and Windows accounts to prevent unauthorized access to your computer and

data. To use the BIOS passwords or the Windows accounts, do the following:

• To use BIOS passwords, see “Using BIOS passwords” on page 65.

• To use Windows accounts, do the following:

1. Click the Start button to open the Start menu.

2. Click Settings ➙ Accounts.

3. Follow the instructions on the screen.

Using fingerprint authentication

If your keyboard has a fingerprint reader, you can use fingerprint authentication to replace passwords for

simple and secure user access. To use fingerprint authentication, first enroll your fingerprints and associate

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them with your passwords (such as the power-on password, hard disk password, and Windows password).

Use the fingerprint reader and the fingerprint program to complete this procedure.

To use fingerprint authentication, use the fingerprint tool provided by the Windows 10 operating system.

Click the Start button to open the Start menu, and then click Settings ➙ Accounts ➙ Sign-in options.

Follow the instructions on the screen.

To use the fingerprint reader, refer to the documentation shipped with the fingerprint keyboard or located on

the Lenovo Support Web site at https://pcsupport.lenovo.com/solutions/pd014444.

Using the cover presence switch

The cover presence switch prevents your computer from logging in to the operating system when the

computer cover is not properly installed or closed.

To use the cover presence switch, enable the cover-presence-switch connector on the system board first. To

achieve this, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Security ➙ Chassis Intrusion Detection and press Enter.

3. Select Enabled and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter. The cover-presence-switch connector on

the system board is enabled.

The cover presence switch starts functioning. If the switch detects that the computer cover is not correctly

installed or closed, an error message is displayed when you turn on the computer. To fix the error and log in

to the operating system, do the following:

1. Properly remove or install your computer cover. See Chapter 9 “Hardware removal and installation” on

page 97.

2. Start and then exit the Setup Utility program. See “Starting the Setup Utility program” on page 63 and

“Exiting the Setup Utility program” on page 68.

Using firewalls

A firewall can be hardware, software, or a combination of both depending on the level of security required.

Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If

your computer is preinstalled with a firewall program, it helps protect against computer Internet security

threats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more

information about how to use the firewall program, refer to the help system of your firewall program.

To use Windows Firewall, do the following:

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Windows Defender Firewall.

4. Follow the instructions on the screen.

Protecting data against viruses

Your computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate

viruses.

Chapter 5.Security 61

Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After

30 days, you must renew the license to continue receiving the antivirus software updates.

Note: Virus definition files must be kept up-to-date to guard against new viruses.

For more information about how to use your antivirus software, refer to the help system of your antivirus

software.

Using the Smart USB Protection function

The Smart USB Protection function is a security function that helps prevent data from being copied from the

computer to USB storage devices connected to the computer. You can set the Smart USB Protection

function to one of the following modes:

• Disabled (default setting): You can use the USB storage devices without limitation.

• Read Only: You cannot copy data from the computer to the USB storage devices. However, you can

access or modify data on the USB storage devices.

• No Access: You cannot access the USB storage devices from the computer.

To configure the Smart USB Protection function, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Security ➙ Smart USB Protection and press Enter.

3. Select the desired setting and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Computrace Agent software embedded in firmware

The Computrace Agent software is an IT asset management and computer theft recovery solution. The

software detects if changes have been made on the computer, such as hardware, software, or the computer

call-in location. You might have to purchase a subscription to activate the Computrace Agent software.

Trusted Platform Module (TPM)

TPM is a secure cryptoprocessor that stores cryptographic keys, which in turn protects information stored in

your computer.

Intel BIOS guard

The BIOS guard module cryptographically verifies all the BIOS updates to the system BIOS flash. Therefore,

the malware is blocked from attacking the BIOS.

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Chapter 6. Advanced configuration

This chapter provides information to help you further configure the computer.

Using the Setup Utility program

The Setup Utility program is used to view and change the configuration settings of your computer. This

section provides information about only the major configuration settings available in the program.

Note: The operating system settings might override any similar settings in the Setup Utility program.

Starting the Setup Utility program

To start the Setup Utility program, do the following:

1. Turn on or restart your computer.

2. Before the operating system starts up, repeatedly press and release F1 or Fn+F1 (depending on the

keyboard settings). Based on the Setup Utility display mode setting, one of the following situations

occurs:

• Text mode: The Setup Utility program opens.

• Graphic mode (available on some models): The start screen is displayed. Then, select Setup and

press Enter to open the Setup Utility program.

Note: If a BIOS password has been set, the Setup Utility program will not open until you enter the

correct password. For more information, see “Using BIOS passwords” on page 65.

To view and change the configuration settings, follow the instructions on the screen.

Changing the display mode of the Setup Utility program

You can use the Setup Utility program in the graphic mode or the text mode according to your needs.

• Text mode: The keys on the keyboard used to perform various tasks are displayed at the bottom of the

screen.

Note: The Serial Port Console Redirection item is available only in the text mode.

• Graphic mode (available on some models): In addition to the keyboard, you also can use the mouse to

make selections.

To change the display mode of the Setup Utility program, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, select Setup mode select and press Enter.

3. Select Graphic or Text and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Changing the display language of the Setup Utility program

The Setup Utility program supports three display languages: English, French, and simplified Chinese.

To change the display language of the Setup Utility program, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, locate System Language and press Enter.

3. Select the display language according to your needs.

Enabling or disabling a device

This section provides information about how to enable or disable user access to hardware devices (such as

USB connectors or storage drives).

To enable or disable a device, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Devices.

3. Select the device you want to enable or disable and press Enter.

4. Select the desired setting and press Enter.

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Enabling or disabling the automatic power-on of your computer

The Automatic Power On item in the Setup Utility program provides various options for you to make your

computer start up automatically.

To enable or disable the Automatic Power On features, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Power ➙ Automatic Power On and press Enter.

3. Select the feature you want to enable or disable and press Enter.

4. Select the desired setting and press Enter.

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Enabling or disabling the ErP LPS compliance mode

Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go

to:

https://www.lenovo.com/ecodeclaration

You can enable the ErP LPS compliance mode in the Setup Utility program to reduce the consumption of

electricity when your computer is off or in sleep mode.

To enable or disable the ErP LPS compliance mode, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Power ➙ Enhanced Power Saving Mode and press Enter.

3. Select Enabled or Disabled depending on your needs, and then press Enter. If you select Enabled, you

also need to disable the Wake on LAN feature. See “Enabling or disabling the automatic power-on of

your computer” on page 64.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

When the ErP LPS compliance mode is enabled, you can wake up your computer by doing one of the

following:

64 P520c Hardware Maintenance Manual

• Press the power button.

• Enable the Wake Up on Alarm feature to make your computer wake up at a set time. See “Enabling or

disabling the automatic power-on of your computer” on page 64.

• Enable the After Power Loss feature to make your computer wake up when the power supply resumes

after a sudden loss of electricity.

To enable the After Power Loss feature, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Power ➙ After Power Loss and press Enter.

3. Select Power On and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Enabling or disabling the configuration change detection

With the configuration-change detection enabled, if the POST detects configuration changes of some

hardware devices (such as storage drives or memory modules), an error message is displayed.

To enable or disable the configuration change detection, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Security ➙ Configuration Change Detection and press Enter.

3. Select the desired setting and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

To bypass the error message and log in to the operating system, do one of the following:

• Press F2 or Fn+F2 (depending on the keyboard settings).

• Start and then exit the Setup Utility program. See “Starting the Setup Utility program” on page 63 and

“Exiting the Setup Utility program” on page 68.

Changing the BIOS settings before installing a new operating system

BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system.

To change the BIOS settings, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, select Exit ➙ OS Optimized Defaults and press Enter.

3. Depending on the operating system to be installed, do one of the following:

• To install the Windows 10 (64-bit) operating system, select Enabled and press Enter.

• To install an operating system other than Windows 10 (64-bit), select Disabled and press Enter.

4. Select Yes in the window displayed and press Enter to confirm your selection.

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Using BIOS passwords

By using the Setup Utility program, you can set passwords to prevent unauthorized access to your computer

and data.

Chapter 6.Advanced configuration 65

You do not have to set any passwords to use your computer. However, using passwords improves computer

security. If you decide to set any passwords, read the following topics.

Password types

The following types of passwords are available in the Setup Utility program:

• Power-on password

When a power-on password is set, you are prompted to enter a valid password each time the computer is

turned on. The computer cannot be used until the valid password is entered.

• Administrator password

Setting an administrator password deters unauthorized users from changing configuration settings. If you

are responsible for maintaining the configuration settings of several computers, you might want to set an

administrator password.

When an administrator password is set, you are prompted to enter a valid password each time you try to

access the Setup Utility program. The Setup Utility program cannot be accessed until a valid password is

entered.

If both the power-on password and administrator password are set, you can enter either password.

However, you must use your administrator password to change any configuration settings.

• Hard disk password

Setting a hard disk password prevents unauthorized access to the data on the internal storage drive (such

as a hard disk drive). When a hard disk password is set, you are prompted to enter a valid password each

time you try to access the storage drive.

Notes:

– Even if the storage drive is removed from one computer and installed in another, the hard-disk

password is still valid.

– If the hard disk password is forgotten, there is no way to reset the password or recover data from the

storage drive.

Password considerations

A password can be any combination of up to 64 alphabetic and numeric characters. For security reasons, it

is recommended to use a strong password that cannot be easily compromised.

Note: The Setup Utility program passwords are case-sensitive.

To set a strong password, consider the following guidelines:

• Have at least eight characters in length

• Contain at least one alphabetic character and one numeric character

• Not be your name or your user name

• Not be a common word or a common name

• Be significantly different from your previous passwords

Setting, changing, or deleting a password

To set, change, or delete a password, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Security.

3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or

Hard Disk Password and press Enter.

66 P520c Hardware Maintenance Manual

4. Follow the instructions on the right side of the screen to set, change, or delete a password.

Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more

information, see “Password considerations” on page 66.

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Erasing lost or forgotten passwords (clearing CMOS)

This section provides instructions on how to erase lost or forgotten passwords, such as a user password.

Note: The instructions in this section do not apply to the hard disk password.

To erase a lost or forgotten password, do the following:

1. Remove any media from the drives and turn off all connected devices and the computer. Then,

disconnect all power cords from electrical outlets and disconnect all cables that are connected to the

computer.

2. Remove the computer cover. See Chapter 9 “Hardware removal and installation” on page 97.

3. Locate the Clear Complementary Metal Oxide Semiconductor (CMOS) /Recovery jumper on the system

board. See “Hardware locations” on page 29.

4. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin

3).

5. Reinstall the computer cover and connect the power cord. See Chapter 9 “Hardware removal and

installation” on page 97.

6. Turn on the computer and leave it on for approximately 10 seconds. Then, turn off the computer by

holding the power button for approximately five seconds.

7. Repeat step 1 and step 2.

8. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2).

9. Reinstall the computer cover and connect the power cord.

10. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.

11. To prevent data loss, ensure that BIOS settings are restored to an earlier point.

Selecting a startup device

If your computer does not start up from the expected device, you can either change the startup device

sequence or select a temporary startup device.

Changing the startup device sequence permanently

To change the startup device sequence permanently, do the following:

1. Depending on the type of the storage device, do one of the following:

• If the storage device is internal, go to step 2.

• If the storage device is a disc, ensure that your computer is turned on. Then, insert the disc into the

optical drive.

• If the storage device is an external device other than a disc, connect the storage device to the

computer.

2. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

3. Select Startup.

4. Follow the instructions on the right side of the screen to change the startup device sequence.

Chapter 6.Advanced configuration 67

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Selecting a temporary startup device

Note: Not all discs and storage drives are bootable.

To select a temporary startup device, do the following:

1. Depending on the type of the storage device, do one of the following:

• If the storage device is internal, go to step 2.

• If the storage device is a disc, ensure that your computer is turned on. Then, insert the disc into the

optical drive.

• If the storage device is an external device other than a disc, connect the storage device to the

computer.

2. Turn on or restart the computer. Before Windows starts up, repeatedly press and release F12 or Fn+F12

(depending on the keyboard settings) until Startup Device Menu is displayed.

3. Select the desired storage device and press Enter. The computer then starts up from the device you

select.

If you want to select a permanent startup device, select Enter Setup on Startup Device Menu and press

Enter to start the Setup Utility program. For more information about how to select a permanent startup

device, see “Changing the startup device sequence permanently” on page 67.

Changing the fan speed level

The Fan Control Stepping item enables you to adjust the thermal performance of your computer. From level 1

to level 7, a higher fan speed level indicates better thermal performance with more noise.

To change the fan speed level, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Power ➙ Fan Control Stepping and press Enter.

3. Select a fan speed level and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Exiting the Setup Utility program

To exit the Setup Utility program, do one of the following:

• If you want to save the new settings, press F10 or Fn+F10 (depending on the keyboard settings). Then,

select Yes in the window displayed and press Enter.

• If you do not want to save the new settings, select Exit ➙ Discard Changes and Exit and press Enter.

Then, select Yes in the window displayed and press Enter.

Updating and recovering the BIOS

The BIOS is the first program that the computer runs when you turn on the computer. The BIOS initializes the

hardware components and loads the operating system and other programs.

68 P520c Hardware Maintenance Manual

Updating the BIOS

When you install a new program, hardware device, or device driver, you might be informed to update the

BIOS. You can update the BIOS from your operating system or a flash update disc (available only on some

models).

To update the BIOS, do the following:

1. Go to https://support.lenovo.com.

2. To update the BIOS from your operating system, download the flash BIOS update driver according to

your operating system version. To update the BIOS from a flash update disc, download the ISO image

version (used to create a flash update disc). Then, download the installation instructions for the flash

BIOS update driver.

3. Print the installation instructions you download and follow the instructions to update the BIOS.

Note: If you want to update the BIOS from a flash update disc, the installation instructions might not

provide the instructions on how to record the update disc. See “Recording a disc” on page 50.

Recovering from a BIOS update failure

To recover from a BIOS update failure, do the following:

1. Remove any media from the drives and turn off all connected devices and the computer. Then,

disconnect all power cords from electrical outlets and disconnect all cables that are connected to the

computer.

2. Remove the computer cover. See Chapter 9 “Hardware removal and installation” on page 97.

3. Locate the Clear CMOS /Recovery jumper on the system board. See “Hardware locations” on page 29.

4. Remove any parts and cables that impede your access to the Clear CMOS /Recovery jumper.

5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin

3).

6. Reinstall the parts and cables that were removed.

7. Reinstall the computer cover and reconnect any cables that were disconnected. See Chapter 9

“Hardware removal and installation” on page 97.

8. Turn on the computer and insert the BIOS update disc into the optical drive. Wait a few minutes. The

recovery process begins. After the recovery process is completed, your computer will shut down

automatically.

Note: If the computer does not start up from the disc, select the disc as the startup device. See

“Selecting a temporary startup device” on page 68.

9. Repeat steps 1–4.

10. Move the Clear CMOS /Recovery jumper back to the standard position (pin 1 and pin 2).

11. Repeat step 6 and step 7.

12. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.

13. To prevent data loss, ensure that BIOS settings are restored to an earlier point.

BIOS level

An incorrect BIOS level can cause false errors and unnecessary FRU replacement. Use the following

information to determine the currently installed BIOS level, the latest BIOS level available, and where to

obtain the latest BIOS level.

• To determine the currently installed BIOS level, start the Setup Utility program and view the BIOS

Revision Level on the Main page.

Chapter 6.Advanced configuration 69

• Sources for obtaining the latest BIOS level available

– Lenovo support Web site: http://www.lenovo.com/support

– Lenovo Customer Support Center

– Levels 1 and 2 Support

To update the BIOS, see “Updating and recovering the BIOS” on page 68.

Note: BIOS settings vary by operating system. Change the BIOS settings before installing a new operating

system. See “Changing the BIOS settings before installing a new operating system” on page 65.

Configuring RAID

This section provides information about storage drive requirements for RAID levels, and instructions on how

to configure RAID for your computer. Depending on your computer model and configuration, you can

configure RAID using one of the following utilities:

• Intel Rapid Storage Technology enterprise (RSTe) configuration utility

• AVAGO MegaRAID Configuration Utility

• Intel Virtual RAID on CPU configuration utility

An Introduction to RAID

RAID is a technology that provides increased storage functions and reliability through redundancy.

When a group of independent physical storage drives is set up to use RAID technology, they are in a RAID

array. This array distributes data across multiple storage drives, but the array appears to the host computer

as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited

I/O performance, because several drives can be accessed simultaneously.

RAID drive groups configured according to certain RAID levels also improve data storage reliability and fault

tolerance compared with single-drive storage systems. Data loss resulting from a drive failure can be

prevented by reconstructing missing data from the remaining drives.

Note: For RAID 0, the missing data resulting from a drive failure cannot be reconstructed.

Configuring RAID with Intel RSTe

If your computer comes with the Intel RSTe configuration utility, you can follow the sections below to

configure RAID with Intel RSTe.

Storage drive requirements for RAID levels

Your computer supports the following RAID levels:

• RAID 0: striped disk array

– Consists of at least two SATA storage drives

– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB

– Better performance without fault tolerance

• RAID 1: mirrored disk array

– Consists of two SATA storage drives

– Improved reading performance and 100% redundancy

• RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1)

– Consists of four SATA storage drives

70 P520c Hardware Maintenance Manual

– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, or 64 KB

• RAID 5: block-level striped disk array with distributed parity

– Consists of at least three SATA storage drives

– Supported strip size: 16 KB, 32 KB, 64 KB, or 128 KB

– Better performance and fault tolerance

Creating a RAID volume

Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being

created.

To create a RAID volume, do the following:

1. Enable RAID by doing the following:

a. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

b. Select Devices ➙ PCH SATA Configuration and press Enter.

c. Select Configure SATA as and press Enter. Then, select RAID and press Enter.

d. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the

keyboard settings), select Yes in the window displayed, and press Enter.

2. Start the Setup Utility program again. See “Starting the Setup Utility program” on page 63.

3. Select Advanced ➙ Intel RSTe SATA Controller and press Enter.

4. Select Create RAID Volume and press Enter. The Create RAID Volume window is displayed.

5. Select and configure the options one by one.

a. Name: You can use the default name Volume0 or type a preferred name for the RAID volume.

b. RAID Level: You can set the RAID level to one of the following:

• RAID0

• RAID1

• RAID10

• RAID5

Note: Some of the RAID levels might not be displayed because the number of installed SATA

storage drives varies.

c. Select Disks: Select a storage drive and press Enter. Then, select X and press Enter to add it to a

group.

d. Strip Size (if applicable): Select a strip size and press Enter.

e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value.

6. Select Create Volume and press Enter to create a RAID volume.

7. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Viewing the information about a RAID volume

To view the information about a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ Intel RSTe SATA Controller and press Enter.

3. Select RAID Volumes and press Enter.

4. Select a RAID volume and press Enter to view the detailed information.

Chapter 6.Advanced configuration 71

Deleting a RAID volume

Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.

To delete a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ Intel RSTe SATA Controller and press Enter.

3. Under RAID Volumes, select the RAID volume that you want to delete and press Enter. The RAID

VOLUME INFO window is displayed.

4. Select Delete under Volume Actions and press Enter. When prompted, select Yes and press Enter to

confirm the deletion of the selected RAID volume.

5. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Configuring RAID with AVAGO MegaRAID Configuration Utility

To configure RAID with AVAGO MegaRAID Configuration Utility, ensure that:

• An AVAGO MegaRAID adapter is installed in your computer.

• The storage drives used for RAID configuration are connected to the installed AVAGO MegaRAID adapter

instead of the system board.

Storage drive requirements for RAID levels

Your computer supports the following RAID levels:

• RAID 0: striped disk array

– Consists of at least two SATA or Serial Attached SCSI (SAS) storage drives

– Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB

– Better performance without fault tolerance

• RAID 1: mirrored disk array

– Consists of two or four SATA or SAS storage drives

– Improved read performance and 100% redundancy

• RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1)

– Consists of four SATA or SAS storage drives

– Data being striped across storage drive groups

– Provides both high data transfer rates and complete data redundancy

• RAID 5: block-level striped disk array with distributed parity

– Consists of at least three SATA or SAS storage drives

– Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB

– Better performance and fault tolerance

– Available only on some models of AVAGO MegaRAID adapters

• RAID 6: block-level striped disk array with dual distributed parity

– Consists of at least four SATA or SAS storage drives

– Supported strip size: 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB

– Better performance and fault tolerance that can stand up to loss of two storage drives

– Available only on some models of AVAGO MegaRAID adapters

72 P520c Hardware Maintenance Manual

Creating a RAID volume

Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being

created.

To create a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ AVAGO MegaRAID Configuration Utility and press Enter.

3. Select Main Menu and press Enter.

4. Select Configuration Management and press Enter.

5. Select Create Virtual Drive and press Enter.

6. Select and configure the options one by one.

a. Select RAID Level: You can set the RAID level to one of the following:

• RAID0

• RAID1

• RAID5

• RAID6

• RAID10

Note: Some of the RAID levels might not be displayed because the number of installed SATA

storage drives and the model of the AVAGO MegaRAID adapter vary.

b. Select Drives From: Select Unconfigured capacity or Free capacity depending on your needs and

press Enter.

c. Select Drives: Select a storage drive and press Enter. After selecting all storage drives for creating

the RAID volume, select Apply Changes and press Enter. When promoted, select Confirm and

press Enter. Then, select Yes and press Enter to save the storage drive selection. Finally, select OK

and press Enter.

d. Virtual Drive Name: You can type a preferred name for the volume name.

e. Strip Size (if applicable): Select a strip size and press Enter.

7. Select Save Configuration and press Enter. When promoted, select Confirm and press Enter. Then,

select Yes and press Enter to confirm the creation of the RAID volume.

8. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Viewing the information about a RAID volume

To view the information about a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ AVAGO MegaRAID Configuration Utility and press Enter.

3. Select Main Menu and press Enter.

4. Select Virtual Drive Management and press Enter.

5. Select a RAID volume and press Enter to view the detailed information.

Deleting a RAID volume

Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.

To delete a RAID volume, do the following:

Chapter 6.Advanced configuration 73

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ AVAGO MegaRAID Configuration Utility.

3. Select Main Menu and press Enter.

4. Select Virtual Drive Management and press Enter.

5. Select the RAID volume that is not needed and press Enter.

6. Under Operation, select Delete Virtual Drive and press Enter.

7. Select Go and press Enter. When prompted, select Confirm and press Enter. Then, select Yes and

press Enter to delete the RAID volume.

8. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Configuring RAID with Intel Virtual RAID on CPU

To configure RAID with the Intel Virtual RAID on CPU configuration utility, ensure that:

• An upgrade key module is connected to the Virtual RAID on CPU (VROC) connector on the system board.

See “Hardware locations” on page 29.

• M.2 solid-state drives are installed in your computer.

Storage drive requirements for RAID levels

Your computer supports the following RAID levels:

• RAID 0: striped disk array

– Consists of at least two M.2 solid-state drives

– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB

– Better performance without fault tolerance

• RAID 1: mirrored disk array

– Consists of two M.2 solid-state drives

– Improved reading performance and 100% redundancy

• RAID 10: striped and mirrored disk array (a combination of RAID 0 and RAID 1)

– Consists of four M.2 solid-state drives

– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, or 64 KB

• RAID 5: block-level striped disk array with distributed parity

– Consists of at least three M.2 solid-state drives

– Supported strip size: 16 KB, 32 KB, 64 KB, or 128 KB

– Better performance and fault tolerance

– Available only on some models of upgrade key modules

Creating a RAID volume

Attention: All the existing data stored on the selected drives will be erased while the RAID volume is being

created.

To create a RAID volume, do the following:

1. Enable VMD for the selected M.2 solid-state drives by doing the following:

a. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

b. Select Advanced ➙ Intel(R) VMD technology and press Enter.

74 P520c Hardware Maintenance Manual

c. Select each menu item and press Enter. Then, select Enabled and press Enter.

d. Select an occupied M.2 solid-state drive slot as you need and press Enter. Then, select VMD and

press Enter.

e. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the

keyboard settings), select Yes in the window displayed, and press Enter.

2. Start the Setup Utility program again. See “Starting the Setup Utility program” on page 63.

3. Select Advanced ➙ Intel Virtual RAID on CPU and press Enter.

4. Select All Intel VMD Controllers and press Enter.

5. Select Create Volumes and press Enter.

6. Select and configure the options one by one.

a. Name: You can use the default name Volume0 or type a preferred name for the RAID volume.

b. RAID Level: You can set the RAID level to one of the following:

• RAID0

• RAID1

• RAID10

• RAID5

Note: Some of the RAID levels might not be displayed because the number of installed M.2 solid-

state drives and the model of the upgrade key module vary.

c. Select Disks: Select an M.2 solid-state drive and press Enter. Then, select X and press Enter to add

it to a group.

d. Stripe Size (if applicable): Select a stripe size and press Enter.

e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value.

7. Select Create Volume and press Enter to create a RAID volume.

8. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

Viewing the information about a RAID volume

To view the information about a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ Intel Virtual RAID on CPU and press Enter.

3. Select RAID Volumes and press Enter.

4. Select a RAID volume and press Enter to view the detailed information.

Deleting a RAID volume

Attention: All the existing data stored on the selected drives will be erased after you delete RAID volumes.

To delete a RAID volume, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. Select Advanced ➙ Intel Virtual RAID on CPU and press Enter.

3. Select Intel VROC Mananged Volumes and press Enter.

4. Under Volume Actions, select Delete and press Enter.

5. When prompted, select Yes and press Enter to confirm the deletion of the selected RAID volume.

Chapter 6.Advanced configuration 75

6. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings), select Yes in the window displayed, and press Enter.

76 P520c Hardware Maintenance Manual

Chapter 7. Troubleshooting, diagnostics, and recovery

This chapter provides solutions to resolve your computer problems. Follow the steps in the basic procedure

for resolving computer problems, which helps you make good use of the troubleshooting, diagnostics, and

recovery information.

Basic procedure for resolving computer problems

It is recommended that you use the following procedure to resolve computer problems you are experiencing:

1. Ensure that:

a. The cables for all connected devices are connected correctly and securely.

b. All connected devices that require ac power are connected to properly grounded, functioning

electrical outlets.

c. All connected devices are enabled in the BIOS settings of your computer. See “Enabling or disabling

a device” on page 64.

If these actions do not resolve your problem, continue with the next step.

2. Use an antivirus program to see if your computer has been infected by a virus. If the program detects a

virus, remove the virus. If the antivirus program does not resolve your problem, continue with the next

step.

3. Go to “Troubleshooting” on page 77 and follow the instructions for the type of problem you are

experiencing. If these troubleshooting instructions do not resolve your problem, continue with the next

step.

4. Run the diagnostic program. See “Diagnosing problems” on page 84. If the diagnostic program does not

resolve your problem, continue with the next step.

5. Recover your operating system. See “Recovery information” on page 87.

6. If none of these actions solve your problem, contact the Lenovo Customer Support Center. For a list of

Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. For more information

about help, service, and technical assistance, see Chapter 10 “Getting information, help, and service” on

page 191.

Troubleshooting

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Use the troubleshooting information to find solutions to problems that have definite symptoms.

Startup problems

The computer does not start up when you press the power button.

Solutions:

Ensure that:

• The power cord is correctly connected to the rear of the computer and to a working electrical outlet.

• If your computer has a secondary power switch on the rear of the computer, ensure that it is switched on.

• The power indicator on the front of the computer is on.

• The computer voltage matches the voltage available at the electrical outlet for your country or region.

The operating system fails to start up.

Solution:

Ensure that the startup device sequence set in the Setup Utility program includes the device where the

operating system resides. Usually, the operating system is on the internal storage drive. For more

information, see “Changing the startup device sequence permanently” on page 67.

The computer beeps multiple times before the operating system starts up.

Solution:

Ensure that no keys are stuck.

Audio problems

The audio cannot be heard on the Windows operating system.

Solutions:

• If you are using powered external speakers that have an On/Off control, ensure that:

– The On/Off control is set to the On position.

– The speaker power cable is connected to a properly grounded, functional ac electrical outlet.

• If your external speakers have a volume control, ensure that the volume is not set too low.

• Click the volume icon in the Windows notification area on the taskbar. Ensure that the mute speakers

settings are not selected and none of the volume settings is set too low.

Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification

area. See the Windows help system.

• For some computers that have a front audio panel, ensure that the volume is not set too low.

• Ensure that your external speakers (and headphones, if used) are connected to the correct audio

connectors on the computer. Most speaker cables are color-coded to match the connectors.

Note: When external-speaker or headphone cables are connected to the audio connectors, the internal

speaker, if present, is disabled. In most cases, if an audio adapter is installed in one of the expansion

slots, the audio function built into the system board is disabled. Therefore, you must use the audio

connectors on the audio adapter.

• Ensure that the program you are running is designed for use on the Windows operating system. If the

program is designed to run in DOS, the program does not use the Windows sound feature. The program

must be configured to use Sound Blaster Pro or Sound Blaster emulation.

• Ensure that the audio device drivers are correctly installed.

The sound comes from one of the external speakers.

Solutions:

• Ensure that the speaker cable is inserted completely into the connector on the computer.

• Right-click the volume icon in the Windows notification area on the taskbar. Then, click Open Volume

Mixer and select the desired speaker. Click the Levels tab and ensure that the Balance settings are set

correctly.

Note: If the volume icon is not displayed in the Windows notification area, add the icon to the notification

area. See the Windows help system.

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CD or DVD problems

A CD or DVD does not work.

Solutions:

• Ensure that the power cable and signal cable are securely connected to the drive.

• Ensure that the disc is inserted correctly, with its label up.

• Ensure that the disc you are using is clean. To remove dust or fingerprints, wipe the disc clean with a soft

cloth from the center to the outside. Wiping a disc in a circular motion might cause loss of data.

• Ensure that the disc you are using is not scratched or damaged. Try inserting another disc that you know

is good. If you cannot read from a known-good disc, you might have a problem with your optical drive or

the cabling to your optical drive.

• If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the

disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem.

A bootable recovery medium, such as the Product Recovery CD, cannot be used to start your

computer.

Solution:

Ensure that the CD or DVD drive is set as the top priority of the Boot Priority Order in the Setup Utility

program. Refer to “Selecting a temporary startup device” on page 68 for information about viewing and

changing the startup sequence.

Note: On some computer models, the startup sequence is permanently set and cannot be changed.

A black screen is displayed instead of the DVD video.

Solutions:

• Restart the DVD player program.

• Try a lower screen resolution or color depth.

• Close any open files, and then restart the computer.

A DVD movie does not play.

Solutions:

• Ensure that the disc surface is clean and not scratched.

• Check the disc or package for regional coding. You might need to purchase a disc with coding for the

region where you are using your computer.

No audio or only an intermittent audio comes out while a DVD movie is playing.

Solutions:

• Check the volume control settings on your computer and on your speakers.

• Ensure that the disc surface is clean and not scratched.

• Check all cable connections to and from the speakers.

• Use the DVD menu for the video to select a different audio track.

The playback is slow or choppy.

Solutions:

• Disable any background programs, such as AntiVirus or Desktop Themes.

Chapter 7.Troubleshooting, diagnostics, and recovery 79

• Ensure that video resolution is lower than 1152 x 864 pixels.

A message indicating invalid disc or no disc found is displayed.

Solutions:

• Ensure that the disc is in the drive with the shiny side of the disc facing down.

• Ensure that video resolution is lower than 1152 x 864 pixels.

• Ensure that the DVD or CD is inserted into an appropriate optical drive. For example, do not insert a DVD

into a CD-only drive.

Intermittent problems

Intermittent problems refer to the problems occur only occasionally and are difficult to repeat.

Solutions:

• Ensure that all cables and cords are securely connected to the computer and attached devices.

• Ensure that when the computer is on, the fan grill is not blocked (there is air flow around the grill), and the

fans are working. If airflow is blocked or the fans are not working, the computer might overheat.

• If Small Computer System Interface (SCSI) devices are installed, ensure that the last external device in

each SCSI chain is terminated correctly. For more information, see your SCSI documentation.

Storage drive problems

Some or all storage drives are missing from the Setup Utility program.

Solutions:

• Ensure that the signal cables and power cables for all the storage drives are connected correctly.

• If the computer is installed with SAS storage drives, ensure that the AVAGO MegaRAID adapter is

correctly connected.

The computer cannot start up from the correct storage drive or the message “No Operating System

Found” is displayed.

Solutions:

• Ensure that the signal cables and power cables for all the storage drives are connected correctly.

• Ensure that the computer starts up from the correct storage drive. Set the storage drive, on which the

operating system resides, as the first startup device in the Setup Utility program. Refer to “Changing the

startup device sequence permanently” on page 67.

Note: In rare cases, the storage drive with the operating system might get corrupted or damaged. If this

problem occurs, replace the storage drive. Refer to Chapter 9 “Hardware removal and installation” on page

97.

Ethernet LAN problems

The computer cannot connect to an Ethernet LAN.

Solutions:

• Connect the cable from the Ethernet connector to the RJ45 connector of the hub.

• Enable the Ethernet LAN feature in the Setup Utility program.

• Enable the Ethernet LAN adapter.

80 P520c Hardware Maintenance Manual

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Network and Sharing Center ➙

Change adapter settings.

4. Right-click the Ethernet LAN adapter icon and click Enable.

• Update or reinstall the Ethernet LAN driver. See “Keeping your computer current” on page 58.

• Install all networking software that is necessary for your network environment. Check with your LAN

administrator for the necessary networking software.

• Set the same duplex for the switch port and the adapter. If you configured the adapter for full duplex,

ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode might

degrade performance, cause data loss, or result in lost connections.

When a Gigabit Ethernet model computer is used at a speed of 1000 Mbps, the Ethernet LAN

connection fails or errors occur.

Solution:

Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE-T hub/switch

(not 100 BASE-X).

A Gigabit Ethernet model computer should connect to the network at a speed of 1000 Mbps but at

only a speed of 100 Mbps.

Solutions:

• Try another cable.

• Set the link partner to auto-negotiate.

• Set the switch to be 802.3ab-compliant (gigabit over copper).

The Wake On LAN feature does not work.

Solution:

Enable the Wake On LAN feature in the Setup Utility program.

Wireless LAN problem

Note: The wireless LAN feature is available only on some models.

The wireless LAN feature does not work.

Solutions:

• Enable the wireless LAN feature in the Setup Utility program.

• For Windows 10, enable the wireless LAN feature in Windows Settings. Click the Start button to open the

Start menu, and then click Settings ➙ Network & Internet ➙ Wi-Fi. Turn on the Wi-Fi feature.

• Enable the wireless LAN adapter.

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Network and Sharing Center ➙

Change adapter settings.

4. Right-click the wireless LAN adapter icon and click Enable.

• Update or reinstall the wireless LAN driver. See “Keeping your computer current” on page 58.

Chapter 7.Troubleshooting, diagnostics, and recovery 81

Bluetooth problems

Note: The Bluetooth feature is available only on some models.

The Bluetooth feature does not work.

Solutions:

• Enable the Bluetooth feature in the Setup Utility program.

• Enable the Bluetooth devices. Do the following:

1. Right-click the Start button to open the Start context menu.

2. Click Device Manager. Type the administrator password or provide confirmation if prompted.

3. Expand Bluetooth to display the Bluetooth devices. Then, right-click each Bluetooth device and then

Click Enable device.

4. Expand Network adapters. Then, right-click each Bluetooth device and then Click Enable device.

• Turn on the Bluetooth radio on Windows 10. Do the following:

1. Click the Start button to open the Start menu.

2. Click Settings ➙ Devices ➙ Bluetooth & other devices.

3. Turn on the Bluetooth switch to enable the Bluetooth feature.

• Update or reinstall the Bluetooth driver. See “Keeping your computer current” on page 58.

No sound comes from the Bluetooth headset or headphones.

Solution:

Set the Bluetooth headset or headphones as the default device.

1. Exit the application that uses the sound device (for example, Windows Media Player).

2. Right-click the volume icon in the Windows notification area on the taskbar.

Note: If the volume icon is not displayed in the Windows notification area, add the icon to the

notification area. See the Windows help system.

3. Click Playback devices.

4. If you are using the Headset profile, select Bluetooth Hands-free Audio, and then click Set Default. If

you are using the AV profile, select Stereo Audio, and then click Set Default.

5. Click OK.

Performance problems

Excessive fragmented files exist on the storage drives.

Solution:

Use the Windows disk defragmentation or disk optimization feature to clean up the files.

Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the

disk-defragmentation process might take up to several hours.

1. Close any open programs and windows.

2. Click the Start button to open the Start menu.

3. Click Windows System ➙ File Explorer ➙ This PC.

4. Right-click your C drive and then click Properties.

82 P520c Hardware Maintenance Manual

5. Click the Tools tab.

6. Click Optimize. Select the desired drive and then click Optimize.

7. Follow the instructions on the screen.

The free storage drive space is insufficient.

Solutions:

Free up the storage drive space.

• Clean out your Inbox, Sent Items, and Deleted Items folders from your e-mail application.

• Clean up your C drive.

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ File Explorer ➙ This PC.

3. Right-click your C drive and then click Properties.

4. Check the amount of free space, and then click Disk Cleanup.

5. A list of unnecessary file categories is displayed. Select each file category you want to delete, and

then click OK.

• Turn some Windows features off or remove some unnecessary programs.

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Programs and Features.

4. Do one of the following:

– To turn some Windows features off, click Turn Windows features on or off. Follow the

instructions on the screen.

– To remove some unnecessary programs, select the program you want to remove, and then click

Uninstall/Change or Uninstall.

The free memory space is insufficient.

Solutions:

• Right-click a blank area on the taskbar and open Task Manager. Then, end some tasks you are not

performing.

• Install additional memory modules. See Chapter 9 “Hardware removal and installation” on page 97. To

purchase memory modules, go to:

https://www.lenovo.com

Serial connector problem

The serial connector cannot be accessed.

Solutions:

• Connect the serial cable from the serial connector on the computer to the serial device. If the serial device

has its own power cord, connect the power cord to a grounded electrical outlet.

• Turn on the serial device and keep the device online.

• Install any programs supplied with the serial device. Refer to the documentation that comes with the serial

device for more information.

• If you added one serial-connector adapter, ensure that the adapter is installed correctly.

Chapter 7.Troubleshooting, diagnostics, and recovery 83

USB device problems

A USB device cannot be accessed.

Solutions:

• Connect the USB cable from the USB connector to the USB device. If the USB device has its own power

cord, connect the power cord to a grounded electrical outlet.

• Turn on the USB device and keep the device online.

• Install any device drivers or programs supplied with the USB device. Refer to the documentation that

comes with the USB device for more information.

• Disconnect and reconnect the USB connector to reset the USB device.

• Ensure that the Smart USB Protection function is disabled. To configure the Smart USB Protection

function, see “Using the Smart USB Protection function” on page 62.

Software and driver problems

For some programs, dates cannot be sorted in correct order.

Solution:

Some programs developed before the year 2000 use only the last two digits of a year to sort dates, assuming

the first two digits are 19. Consequently, dates cannot be sorted in correct order nowadays. Check with your

software manufacturer to see if any updates are available. Many software manufacturers make updates

available from the World Wide Web.

Some programs do not work as expected.

Solutions:

1. Check whether the problem is caused by a program.

a. Ensure that the software is compatible with your computer. Refer to the information supplied with the

software for more information.

b. Verify that other software works properly on your computer.

c. Verify that the software you are using works on another computer.

2. If the problem is caused by a program:

• Refer to the printed documentation that comes with the program or the help system of the program

for troubleshooting information.

• Update the program. See “Keeping your computer current” on page 58.

• Uninstall the program and then reinstall it. To download a program that is preinstalled on your

computer, go to https://support.lenovo.com and follow the instructions on the screen.

A device does not work properly due to device driver problems.

Solution:

Update the device driver. See “Keeping your computer current” on page 58.

Diagnosing problems

Many computer problems can be solved without outside assistance. If you experience a problem with your

computer, the first place to start is the troubleshooting information in your computer documentation. If you

suspect a software problem, see the documentation, including readme files and help information systems,

84 P520c Hardware Maintenance Manual

that come with the operating system or program. ThinkStation computers come with a set of diagnostic

programs that you can use to help you identify hardware problems.

Diagnosing problems with Lenovo Vantage

Lenovo Vantage is preinstalled on your computer and is ready to run.

Note: If you are unable to isolate and repair the problem yourself after running Lenovo Vantage, save and

print the log files created by the program. You need the log files when you speak to a Lenovo technical

support representative.

Lenovo Vantage supports the hardware scan function. It combines diagnostic tests, system information

collection, security status, and support information, along with hints and tips for optimal system

performance.

The troubleshooting information or the diagnostic programs might tell you that you need additional or

updated device drivers or other software. You can get the latest technical information and download device

drivers and updates from the Lenovo Support Web site at:

https://support.lenovo.com

Diagnosing problems with ThinkStation Diagnostics

ThinkStation Diagnostics is preinstalled on your computer and also is available for download at:

https://www.lenovo.com/diags

ThinkStation Diagnostics enables you to troubleshoot and resolve computer problems. The program notifies

you of any issues detected by the real-time hardware diagnostic monitoring function. The program also

provides the details of the issue, analyzes possible causes, and provides solutions.

Hardware diagnostics

The hardware diagnostics function enables your computer to monitor hardware components in real time for

potential issues or errors without impacting the performance. When an issue or error is detected, hardware

diagnostic information is presented in one of the following ways:

• If the ThinkStation Diagnostics application is installed and running on your computer, an issue or error

message is displayed in the Windows notification area. Go to ThinkStation Diagnostics for more

information and suggested solutions.

• If the ThinkStation Diagnostics application is not installed or running on your computer, an error code is

displayed on the seven-segment display on the front of the computer. For detailed information, do either

of the following:

– Check the error code at:

https://thinkworkstationsoftware.com/diags

– If the Lenovo PC Diagnostics application is installed in your smartphone, use the application to transfer

the error code from the computer to the smartphone for further analysis. The application is available for

download at both Google Play and iTunes App Store.

The hardware diagnostics function is enabled on your computer by default. If you want to disable the

function, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, select Advanced ➙ Diagnostics, and then press Enter.

3. Select Real-time Diagnostics Monitoring and press Enter. Then select Disabled and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Chapter 7.Troubleshooting, diagnostics, and recovery 85

Hardware diagnostics

The hardware diagnostics function enables your computer to monitor hardware components in real time for

potential issues or errors without impacting the performance. When an issue or error is detected, hardware

diagnostic information is presented in either of the following ways:

• If the ThinkStation Diagnostics application is installed and running on your computer, an issue or error

message is displayed in the Windows notification area. Go to ThinkStation Diagnostics for more

information and suggested solutions.

• If the ThinkStation Diagnostics application is not installed or running on your computer, depending on

your computer configuration, do either of the following:

1. If your computer has the four-digit diagnostic display installed, an error code is displayed on the four-

digit diagnostic display on the front of the computer. Check the error code at the following Web site:

https://thinkworkstationsoftware.com/diags

2. If the signal diagnostic LED indicator is available on your computer, the diagnostic LED indicator

blinks to indicate that an issue or error is detected. Then you can use the Lenovo PC Diagnostics

application installed in your smartphone to transfer the error code from the computer to the

smartphone for further analysis. The application is available for download at both Google Play and

iTunes App Store.

The hardware diagnostics function is enabled on your computer by default. If you want to disable the

function, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, select Advanced ➙ Diagnostics, and then press Enter.

3. Select Real-time Diagnostics Monitoring and press Enter. Then select Disabled and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

Hardware diagnostics

The hardware diagnostics function enables your computer to monitor hardware components in real time for

potential issues or errors without impacting the performance. When an issue or error is detected, hardware

diagnostic information is presented in either of the following ways:

• If the ThinkStation Diagnostics application is installed and running on your computer, an issue or error

message is displayed in the Windows notification area. Go to ThinkStation Diagnostics for more

information and suggested solutions.

• If your computer has the four-digit diagnostic display installed, an error code is displayed on the four-digit

diagnostic display on the front of the computer. Check the error code at the following Web site:

https://thinkworkstationsoftware.com/diags

The hardware diagnostics function is enabled on your computer by default. If you want to disable the

function, do the following:

1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 63.

2. From the main interface, select Advanced ➙ Diagnostics, and then press Enter.

3. Select Real-time Diagnostics Monitoring and press Enter. Then select Disabled and press Enter.

4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboard

settings). Then, select Yes in the window displayed, and press Enter.

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UEFI diagnostic program

A UEFI diagnostic program is preinstalled on the computer. It enables you to test memory modules and

internal storage devices, view system information, and check and recover bad sectors on internal storage

devices.

To run the UEFI diagnostic program, do the following:

1. Turn on the computer. If the computer cannot be turned on, go to “Basic procedure for resolving

computer problems” on page 77. If an error code is displayed, go to “Symptom-to-FRU index” on page

90 for error code descriptions and troubleshooting hints.

2. Repeatedly press and release the F10 key when turning on the computer. The main screen of the UEFI

diagnostic program is displayed.

3. Follow the instructions on the screen to run the diagnostic program.

Table 1. Items on the main screen of the UEFI diagnostic program

DIAGNOSTICS TOOLS

• CPU [1]

• DISPLAY [2]

• MEMORY [3]

• MOTHERBOARD [4]

• OPTICAL [5]

• PCI EXPRESS [6]

• STORAGE [7]

• RUN ALL [R]

• SYSTEM INFORMATION [F1]

• DIAGNOSTIC EVENT LOG [F2]

Note: DIAGNOSTIC EVENT LOG [F2] provides the real-time hardware diagnostic information with error

date, time, error code, and general problem description. For more information about the error code, go to

www.thinkworkstationsoftware.com. Press Shift+M to view detailed description of each event log.

Recovery information

This section provides instructions on how to recover your operating system.

Note: If a device does not work correctly after recovering the operating system, update the device driver.

See “Keeping your computer current” on page 58.

To recover your Windows 10 operating system, use the following solutions:

• Use Windows recovery solutions.

– Use recovery solutions in Windows Settings.

1. Click the Start button to open the Start menu.

2. Click Settings ➙ Update & Security ➙ Recovery.

3. Follow the instructions on the screen to choose the appropriate recovery solution.

– Use System Restore to restore system files and settings to an earlier point.

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

Chapter 7.Troubleshooting, diagnostics, and recovery 87

3. View Control Panel by Large icons or Small icons, and then click Recovery ➙ Open System

Restore.

4. Follow the instructions on the screen.

– Use the File History tool to restore your files from a backup.

Note: If you use the File History tool to restore your files from a backup, ensure that you backed up

your data earlier with the tool.

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click File History ➙ Restore personal

files.

4. Follow the instructions on the screen.

– Use the Windows recovery environment by doing one of the following:

– After several consecutive failed boot attempts, the Windows recovery environment might start

automatically. Follow the instructions on the screen to choose the appropriate recovery solution.

– Select the recovery medium you created earlier with the Windows tool as the startup device. See

“Selecting a temporary startup device” on page 68. Then, follow the instructions on the screen to

choose the appropriate recovery solution.

• Use the recovery USB key provided by Lenovo to restore the entire storage drive to the factory-default

settings.

– If your computer comes with the recovery USB key, follow the instructions shipped with the USB key.

– If your computer does not come with the recovery USB key, contact the Lenovo Customer Support

Center to order a recovery USB key. See “Calling for service” on page 192.

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Chapter 8. Service checkout and symptom-to-FRU index

This chapter provides information about general service checkout and symptom-to-FRU index.

Service checkout

Attention: The drives in the computer you are servicing might have been rearranged or the drive startup

sequence changed. Be extremely careful during write operations such as copying, saving, or formatting.

Data or programs can be overwritten if you select an incorrect drive.

General error messages appear if a problem or conflict is found by a program, the operating system, or both.

For an explanation of these messages, refer to the information supplied with that software package.

Before replacing any FRUs, ensure that the latest level of BIOS is installed on the system. A down-level BIOS

might cause false errors and unnecessary replacement of the system board. For more information about how

to determine and obtain the latest level BIOS, see “BIOS level” on page 69.

Use the following procedure to help determine the cause of the problem:

1. Turn off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

4. Turn on all external devices.

5. Turn on the computer.

• Look for displayed error codes.

• Listen for beep codes.

• Look for readable instructions or a main menu on the display.

If you did not receive the correct response, proceed to step 6 on page 89.

If you do receive the correct response, proceed to step 7 on page 89.

6. Look at the following conditions and follow the instructions:

• If you hear beep codes during POST, go to “Beep symptoms” on page 91.

• If the computer displays a POST error, go to “POST error codes” on page 92.

• If the computer hangs and no error is displayed, continue at step 7 on page 89.

7. Run the Diagnostic programs. See “Diagnosing problems” on page 84.

• If you receive an error, replace the part that the diagnostic program calls out.

• If the test stops and you cannot continue, replace the last device tested.

Problem determination tips

Due to the variety of hardware and software combinations that can be encountered, use the following

information to assist you in problem determination. If possible, have this information available when

requesting assistance from Service Support and Engineering functions.

• Machine type and model

• Processor or hard disk drive upgrades

• Failure symptom

– Do diagnostics indicate a failure?

– What, when, where, single, or multiple systems?

– Is the failure repeatable?

– Has this configuration ever worked?

– If it has been working, what changes were made prior to its failing?

– Is this the original reported failure?

• Diagnostics version

– Type and version level

• Hardware configuration

– Print (print screen) configuration currently in use

– BIOS level

• Operating system software

– Type and version level

Notes: To eliminate confusion, identical systems are considered identical only if they:

1. Are the exact machine type and models

2. Have the same BIOS level

3. Have the same adapters/attachments in the same locations

4. Have the same address jumpers/terminators/cabling

5. Have the same software versions and levels

6. Have the same Diagnostic Diskettes (version)

7. Have the same configuration options set in the system

8. Have the same setup for the operating system control files

Comparing the configuration and software set-up between “working and non-working” systems will often

lead to problem resolution.

Symptom-to-FRU index

The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first.

Always begin with “Service checkout” on page 89. This index can also be used to help you decide which

FRUs to have available when servicing a computer. If you are unable to correct the problem using this index,

go to “Undetermined problems” on page 95.

Notes:

• The Symptom-to-FRU index is not specific to any machine type and are applicable to all ThinkStation computers.

• If you have both an error message and an incorrect audio response, diagnose the error message first.

• If you cannot run the diagnostic tests or you get a diagnostic error code when running a test, but did receive a

POST error message, diagnose the POST error message first.

• If you did not receive any error message, look for a description of your error symptoms in the first part of this index.

Hard disk drive boot error

A hard disk drive boot error can have the following causes.

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Error FRU/Action

The start-up drive is not in the boot sequence in

configuration.

Check the configuration and ensure that the start-up drive

is in the boot sequence.

No operating system installed on the boot drive. Install an operating system on the boot drive.

The boot sector on the startup drive is corrupted. The drive must be formatted. Do the following:

1. Attempt to back up the data on the failing hard disk

drive.

2. Using the operating system programs, format the

hard disk drive.

The drive is defective. Replace the hard disk drive.

Power supply problems

If you suspect a power problem, use the following procedures.

Check/Verify FRU/Action

Check the following for proper installation.

• Power cord

• On/Off switch connector

• On/Off switch power supply connector

• System board power supply connectors

• Microprocessor connection

Reseat connectors

Check the power cord for continuity. Power cord

Check the power-on switch for continuity. Power-on switch

Beep symptoms

Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST.

The following table describes the beep symptoms.

Beep symptom FRU/Action

2 short beeps: common POST error Common POST error code. See the detailed failure

information in “POST error codes” on page 92.

3 short and 1 long beeps: DRAM memory error Perform the following actions in order:

1. Make sure that the memory modules are properly

seated in the memory slots.

2. Replace the memory modules.

3. Replace the system board (for trained service

personnel only).

Chapter 8.Service checkout and symptom-to-FRU index 91

Beep symptom FRU/Action

4 long beeps: insufficient shadow RAM resources for

option ROM (error code: 8998) or PCIe/PCI MMIO

(memory mapped input/output) resources (error code:

8999)

See the detailed failure information in “POST error codes”

on page 92.

2 long and 3 short beeps: graphics card error Perform the following actions in order:

1. Make sure that the graphics cards are properly

seated in the slots.

2. Replace the graphics cards.

3. Replace the system board (for trained service

personnel only).

POST error codes

Each time you turn on the system, it performs a series of tests that check the operation of the system and

some options. This series of tests are called the Power-On Self-Test, or POST. POST checks the following

operations:

• Some basic system-board operations

• Memory operation

• Video operation

• Whether the boot drive is working

If the POST detects a problem, an error message appears on the screen. A single problem might cause

several error messages to appear. When you correct the cause of the first error message, the other error

messages probably will not appear on the screen the next time.

Error code POST error message Description/Action

0135 CPU fan failure

System fan failure

Power fan failure

Front fan failure

Rear fan failure

Auxiliary fan failure

ODD fan failure

This error message is displayed

when a fan fails and the system

might be overheating.

Press F10 to exit.

0211 Keyboard not found This error message is displayed when

no keyboard is detected.

0164 Memory size decreased This error message is displayed

when the memory size is

decreased.

Press F10 to exit.

1762 SATA device configuration change

has occurred This error message is displayed

when a hard disk drive change or

an optical drive change has been

made.

Press F10 to exit.

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Error code POST error message Description/Action

1820 More than one external fingerprint

reader is attached. Turn off and

remove all but the reader that you set

up within your main operating

system.

This error message is displayed

when more than one external

fingerprint reader is connected to

the computer.

Turn off and remove all but the

reader that you set up within your

main operating system.

1962 No operating system found. Boot

sequence will automatically repeat. This error occurs only after the

POST is completed.

Press any key to repeat boot

sequence.

8998 Not enough shadow RAM resources

for OPTION ROM, not all devices

initialized. Suggest to remove some

add-on cards, or change to UEFI

mode in BIOS setup.

This error message is displayed

when the shadow RAM resources

for option ROM are insufficient.

If the legacy option ROM is

insufficient, remove some add-in

cards.

For the system that supports

UEFI, set UEFI as the first priority

or disable CSM in BIOS setup.

8999 Not enough PCIe/PCI MMIO

resources. Currently only one video

card is enabled. Remove some PCIe

cards, or enter BIOS Setup and

enable “Above 4GB Decode”

This error message is displayed

when the PCIe/PCI MMIO

(memory mapped input/output)

resources are insufficient.

For the 32-bit operating system,

remove some add-in cards.

For the 64-bit operating system,

enable Above 4 GB Decode in

BIOS setup.

Miscellaneous error conditions

Message/Symptom FRU/Action

Changing display colors Display/Monitor

Computer will not power-off. See “Hard disk drive boot

error” on page 90. 1. Power Switch

2. System Board

3. Riser card, if installed.

Computer will not RPL from server 1. Ensure that the network is in startup sequence as the

first device or the first device after diskette.

2. Ensure that the network adapter is enabled for RPL.

3. Network adapter (Advise network administrator of

new MAC address)

Chapter 8.Service checkout and symptom-to-FRU index 93

Message/Symptom FRU/Action

Computer will not perform a Wake On LAN® (if applicable) 1. Check the power supply and signal cable

connections to the network adapter.

2. Ensure that the operating system settings are set to

enable Wake on LAN.

3. Ensure that the Wake On LAN feature is enabled in

Setup/Configuration (see “Starting the Setup Utility

program” on page 63)

4. Ensure that the network administrator is using the

correct MAC address.

5. Ensure no interrupt or I/O address conflicts.

6. Network adapter (advise network administrator of

new MAC address)

Dead computer. See “Hard disk drive boot error” on page

90. 1. Power Supply

2. System Board

Diskette drive in-use light remains on or does not light

when drive is active. 1. Diskette Drive

2. System Board

3. Diskette Drive Cable

Blank screen except for flashing cursor. 1. System Board

2. Primary Hard Disk Drive

3. Hard Disk Drive Cable

Incorrect memory size during POST 1. Run the Memory tests.

2. Memory Module

3. System Board

"Insert a Diskette" icon appears with a known-good

diagnostics diskette in the first 3.5-inch diskette drive. 1. System Board

2. Diskette Drive Cable

3. Network Adapter

Intensity or color varies from left to right of characters and

color bars 1. Display

2. Video adapter (if present)

3. System Board

No power or fan not running 1. See “Hard disk drive boot error” on page 90.

Non-system disk or disk error-type message with a

known-good diagnostic diskette. 1. Diskette Drive

2. System Board

3. Diskette Drive Cable

Other display symptoms not listed above (including blank

or illegible display) 1. Display

2. System Board

Power-on indicator or hard disk drive in-use light not on,

but computer works correctly 1. Power switch/LED assembly

2. System Board

Printer problems 1. Printer

2. System Board

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Message/Symptom FRU/Action

Program loads from the hard disk with a known-good

diagnostics diskette in the first 3.5-inch diskette drive 1. Run the Setup Utility program and check the Startup

sequence.

2. Diskette Drive

3. Diskette Drive Cable

4. System Board

5. Power Supply

RPL computer cannot access programs from its own hard

disk. 1. If the network administrator is using LCCM Hybrid

RPL, check the startup sequence:

a. First device - network

b. Second device - hard disk

2. Hard disk drive

RPL computer does not RPL from server 1. Check the startup sequence.

2. Check the network adapter LED status.

Serial or parallel connector device failure (system board

connector) 1. External Device Self-Test OK?

2. External Device

3. Cable

4. System Board

Serial or parallel connector device failure (adapter

connector) 1. External Device Self-Test OK?

2. External Device

3. Cable

4. Alternate Adapter

5. System Board

Some or all keys on the keyboard do not work 1. Keyboard

2. Keyboard Cable

3. System Board

Undetermined problems

This section provides instructions on how to find out the failing devices or adapters.

1. Turn off the computer.

2. Remove or disconnect the following components (if installed) one at a time.

a. External devices (modem, printer, or mouse)

b. Any adapters

c. Memory modules

d. Extended video memory

e. External Cache

f. External Cache RAM

g. Hard disk drive

h. Diskette drive

3. Turn on the computer to retest the system.

Chapter 8.Service checkout and symptom-to-FRU index 95

4. Repeat steps 1 through 3 until you find the failing device or adapter.

If all devices and adapters have been removed, and the problem continues, replace the system board. See

“System board” on page 184.

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Chapter 9. Hardware removal and installation

This chapter provides instructions on how to remove and install hardware for your computer.

Handling static-sensitive devices

Do not open the static-protective package containing the new part until the defective part has been removed

and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage

computer components and options.

When you handle options and other computer components, take these precautions to avoid static-electricity

damage:

• Limit your movement. Movement can cause static electricity to build up around you.

• Always handle options and other computer components carefully. Handle PCI/PCIe cards, memory

modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry.

• Prevent others from touching the options and other computer components.

• Touch the static-protective package containing the part to a metal expansion-slot cover or other

unpainted metal surface on the computer for at least two seconds. This reduces static electricity from the

package and your body before you install or replace a new part.

• When possible, remove the new part from the static-protective package, and install it directly in the

computer without setting the part down. When this is not possible, place the static-protective package on

a smooth, level surface and place the part on the package.

• Do not place the part on the computer cover or other metal surface.

Preparing your computer and removing the computer cover

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

CAUTION:

Avoid contact with hot components inside the computer. During operation, some components

become hot enough to burn the skin. Before you open the computer cover, turn off the computer,

disconnect power, and wait approximately 10 minutes for the components to cool.

Before installing or removing any hardware component in your computer, do the following to prepare your

computer and remove the computer cover:

1. Remove any media from the drives and turn off all attached devices and the computer. Then, disconnect

all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Unlock any locking device that secures the computer cover. See “Locking your computer” on page 59.

3. Remove the two screws that secure the computer cover.

4. Press the cover-release button on the side of the computer and slide the cover to the rear of the

computer to remove the cover.

Figure 13. Removing the computer cover

Notes:

• Depending on your computer model, some of the hardware parts in the removing or installing section

might not be available.

• Use computer parts provided only by Lenovo.

• When removing or installing an option, use the appropriate instructions in this section along with the

instructions that come with the option.

• In most areas of the world, Lenovo requires the return of the defective CRU. Information about this will

come with the CRU or will come a few days after the CRU arrives.

Removing and installing hardware

This section provides instructions on how to remove and install hardware for your computer. You can expand

the capabilities of your computer and maintain your computer by removing or installing hardware.

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

External options

You can connect external options to your computer, such as external speakers, a printer, or a scanner. For

some external options, you must install additional software in addition to making the physical connection.

When installing an external option, see “Hardware locations” on page 29 to identify the required connector.

Then, use the instructions that come with the option to help you make the connection and install any required

software or device drivers.

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Front bezel

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

To remove and install the front bezel, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Release the three plastic tabs on the left side and pivot the front bezel outward to remove it from the

computer.

Figure 14. Removing the front bezel

3. To install the front bezel, align the three plastic tabs on the right side of the front bezel with the

corresponding holes in the chassis. Then pivot the front bezel inwards until it snaps into position on the

left side.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Power button

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

To remove and install the power button, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. Locate the power button. See “Computer components” on page 33.

4. Disconnect the power button cable from the power button connector on the system board. See “Parts

on the system board” on page 39.

Chapter 9.Hardware removal and installation 99

5. Remove the screw that secures the power button to the front bezel. Then, remove the power button

from the front bezel.

Figure 15. Removing the power button

6. Align the screw hole in the power button with the corresponding hole in the front bezel. Then install the

screw to secure the power button to the front bezel.

Figure 16. Installing the power button

7. Connect the power button cable to the front-bezel connector on the system board. See “Parts on the

system board” on page 39.

8. Reinstall the front bezel. See “Front bezel” on page 99.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

PCIe card

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

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Your computer has one PCIe x4 card slot, one PCIe x8 card slot, and two PCIe x16 card slots (graphics card

available on some models).

Half-length PCIe card

To remove or install a half-length PCIe card, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. At the rear of the computer, press the release button 1 to open the card latch 2.

Figure 17. Opening the PCIe card latch

3. Locate the PCIe card slot. See “Parts on the system board” on page 39.

4. If the PCIe card slot is a PCIe x16 card slot, press the retaining latch 1 as shown to disengage the latch.

Figure 18. Disengaging the retaining latch

Chapter 9.Hardware removal and installation 101

5. To remove a half-length PCIe card, grasp the old card that is currently installed and gently pull it out of

the slot.

Figure 19. Removing a PCIe card

Notes:

• If the card is connected to other device, disconnect the cables from the card.

• The card might fit tightly into the slot. If necessary, alternately move each side of the card a small

amount until the card is removed from the slot.

6. To install a half-length PCIe card, do the following:

a. Remove the new PCIe card from its static-protective package.

b. If necessary, remove the appropriate metal slot cover.

c. Install the new card into the card slot on the system board until it is securely seated. See “Parts on

the system board” on page 39.

Note: If you are installing a PCIe x16 graphics card, ensure that the memory-slot retaining clips are

closed before you install the card to avoid any interference during the installation.

Figure 20. Installing a PCIe card

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d. Pivot the card latch to the closed position to secure the PCIe card.

Figure 21. Closing the PCIe card latch

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Full-length PCIe card

To remove or install a full-length PCIe card, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the PCIe card slots.

3. At the rear of the computer, press the release button 1 to open the card latch 2.

Figure 22. Opening the PCIe card latch

4. Locate the PCIe card slot. See “Parts on the system board” on page 39.

Chapter 9.Hardware removal and installation 103

5. If the PCIe card slot is a PCIe x16 card slot, press the retaining latch 1 as shown to disengage the latch.

Figure 23. Disengaging the retaining latch

6. To remove a full-length PCIe card, do the following:

a. Pivot the tab on the front fan assembly outward to open the latch inside.

Figure 24. Opening the latch on the front fan assembly

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b. Grasp the old card that is currently installed and gently pull it out of the slot.

Notes:

• If the card is connected to other device, disconnect the cables from the card.

• The card might fit tightly into the slot. If necessary, alternately move each side of the card a small

amount until the card is removed from the slot.

Figure 25. Removing the full-length PCIe card

7. To install a full-length PCIe card, do the following:

a. Remove the new full-length PCIe card from its static-protective package.

Chapter 9.Hardware removal and installation 105

b. Align the notch on the new full-length PCIe card with the slot key in a PCIe x16 card slot on the

system board. Then, insert the new card downward into the card slot until it is secured tightly. See

“Parts on the system board” on page 39.

Note: Ensure that the memory-slot retaining clips are closed before you install the card to avoid any

interference during the installation.

Figure 26. Installing a full-length PCIe card

c. Pivot the tab on the front fan assembly inward to close the latch inside.

Figure 27. Closing the latch on the front fan assembly

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8. Pivot the card latch to the closed position to secure the full-length PCIe card.

Figure 28. Closing the PCIe card latch

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Memory module

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Your computer has four memory slots for installing or replacing DDR4 RDIMMs that provide up to a

maximum of 128 GB system memory. When installing or replacing a memory module, use the following

guidelines:

• Use any of DDR4 ECC RDIMMs for your computer.

• Use 8 GB, 16 GB, or 32 GB ECC RDIMMs in any combination up to a maximum of 128 GB system

memory.

Chapter 9.Hardware removal and installation 107

• Install memory modules in the alphabetic order as shown.

Figure 29. Memory module installation order

To remove or install a memory module, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the system board.

3. Locate the memory slots. See “Parts on the system board” on page 39.

4. Remove any parts that might prevent your access to the memory slots. Depending on your computer

model, you might need to remove the PCIe x16 graphics card for easier access to the memory slots. See

“Full-length PCIe card” on page 103.

5. To remove a memory module, open the retaining clips and gently pull the memory module out of the

memory slot.

Figure 30. Removing a memory module

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6. To install a memory module, do the following:

a. Open the retaining clips of the memory slot into which you want to install the memory module.

Figure 31. Opening the retaining clips

b. Position the new memory module over the memory slot. Ensure that the notch 1 on the memory

module is aligned with the key 2 in the slot. Push the memory module straight down into the slot until

the retaining clips completely close.

Figure 32. Installing a memory module

7. Reinstall the PCIe x16 graphics card if you have removed it.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Optical drive

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Depending on your computer model, the following devices might be installed in the flex bays:

• 5.25-inch flex module

• Front-access storage enclosure

• Multi-drive conversion kit

Chapter 9.Hardware removal and installation 109

• Optical drive

• Slim-optical-drive adapter

• Storage drive bracket

Note: The following instructions on how to remove or install an optical drive also apply to other supported

devices in the flex bay.

To remove or install an optical drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. If you are removing an optical drive, do the following:

a. Disconnect cables from the rear of the optical drive, press the release button 1, and then slide the

optical drive out of the chassis.

Figure 33. Removing the optical drive

b. Remove the optical-drive retainer from the left side of the optical drive.

4. If you are installing an optical drive, do the following:

110 P520c Hardware Maintenance Manual

a. Locate the optical-drive retainer from the left side of the computer. Push the retainer downwards to

unlock the retainer. Then lift the retainer out of the chassis.

Figure 34. Removing the optical-drive retainer from the computer

b. Install the optical-drive retainer onto the left side of the new optical drive.

Figure 35. Installing the optical-drive retainer

c. If necessary, remove the plastic panel in the front bezel for the desired flex bay.

Chapter 9.Hardware removal and installation 111

d. Slide the new optical drive into the flex bay from the front of the computer until the optical drive

snaps into position.

Figure 36. Installing the optical drive

e. Connect the cables to the rear of the new optical drive.

Figure 37. Connecting the cables to the rear of the new optical drive

5. Reinstall the front bezel. See “Front bezel” on page 99.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Storage drive in the front-access storage enclosure

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

You can install or replace a storage drive in the front-access storage enclosure. The storage drive also can

be hot-swappable, which means that you can install or replace the drive without even turning off your

computer. Therefore, lock the enclosure cover to prevent the unexpected removal. The keys are attached at

the rear of the computer. Store the keys in a secure place.

The storage drive in the front-access storage enclosure is hot-swappable only when the following

requirements are met:

112 P520c Hardware Maintenance Manual

• The SATA cable of the front-access storage enclosure is connected to the eSATA connector on the

system board. To verify the cable connection, see “Preparing your computer and removing the computer

cover” on page 97 and “Parts on the system board” on page 39 for more information.

• The operating system of your computer does not reside on the storage drive installed in the front-access

storage enclosure.

Attention: If any of the above requirements are not met, do not remove or install the storage drive when the

computer is turned on. Otherwise, data on the storage drive might get damaged.

3.5-inch storage drive

To remove or install a 3.5-inch storage drive, do the following:

1. Before removing an old 3.5-inch storage drive, safely eject the old storage drive from the operating

system first. For more information, see the Windows help system.

2. Unlock the enclosure cover with the provided key as shown. Press the notch a to open the enclosure

cover.

Figure 38. Opening the front-access storage enclosure cover

3. Press the pit on the bracket cover, and then grasp the tilted cover to pull the bracket out of the front-

access storage enclosure.

Figure 39. Removing the bracket from the front-access storage enclosure

Chapter 9.Hardware removal and installation 113

4. To remove the 3.5-inch storage drive, flex both sides of the bracket to remove the 3.5-inch storage drive

from the bracket.

Figure 40. Removing the 3.5-inch storage drive from the bracket

5. To install a new 3.5-inch storage drive into the front-access storage enclosure, do the following:

114 P520c Hardware Maintenance Manual

a. Flex both sides of the bracket and align pins 1 on the bracket with the corresponding holes in the

new 3.5-inch storage drive.

Notes:

• Ensure that the circuit board faces downward and the connectors face toward the rear of the

bracket.

• Do not touch the circuit board on the storage drive.

Figure 41. Installing the 3.5-inch storage drive into the bracket

b. Slide the bracket with the new 3.5-inch storage drive into the front-access storage enclosure until it

snaps into position.

Figure 42. Installing the 3.5-inch storage drive into the front-access storage enclosure

c. Press the notch to secure the enclosure cover and lock the enclosure cover with the key.

What to do next:

Chapter 9.Hardware removal and installation 115

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

2.5-inch storage drive

To remove or install a 2.5-inch storage drive, do the following:

1. Before removing an old 2.5-inch storage drive, safely eject the old storage drive from the operating

system first. For more information, see the Windows help system.

2. Unlock the enclosure cover with the provided key as shown. Press the notch a to open the enclosure

cover.

Figure 43. Opening the front-access storage enclosure cover

3. Press the pit on the bracket cover, and then grasp the tilted cover to pull the bracket out of the front-

access storage enclosure.

Figure 44. Removing the bracket from the front-access storage enclosure

4. To remove the 2.5-inch storage drive, do the following:

a. Flex both sides of the bracket to remove the 2.5-inch storage drive from the bracket.

Figure 45. Removing the 2.5-inch storage drive from the bracket

116 P520c Hardware Maintenance Manual

b. Pivot the tab 1 of the metal adapter upward. Then, push the adapter as shown until the four tabs on

the adapter slide into the notches 2. Pivot the adapter as shown to remove it with the storage drive

from the converter.

Figure 46. Removing the adapter from the converter

c. Flex both sides of the adapter to release the four pins 1 from the storage drive. Then, remove the

storage drive from the adapter.

Figure 47. Removing the storage drive from the adapter

5. To install a new 2.5-inch storage drive, do the following:

Chapter 9.Hardware removal and installation 117

a. Note the orientation of the connector on the new storage drive. Then, flex both sides of the adapter

and align the four pins 1 with the corresponding holes in the storage drive.

Note: Do not touch the circuit board (if accessible) of the 2.5-inch storage drive.

Figure 48. Installing the storage drive into the adapter

b. Align the four tabs on the adapter with the corresponding notches 1 in the converter. Then, slide the

storage drive as shown until the tab 2 snaps into position. The adapter with the storage drive is

installed into the converter.

Figure 49. Installing the adapter into the converter

118 P520c Hardware Maintenance Manual

c. Flex both sides of the plastic bracket and align pins 1 on the plastic bracket with the corresponding

holes in the plastic frame of the converter.

Notes:

• Ensure that the circuit board faces downward and the connectors face toward the rear of the

bracket.

• Do not touch the circuit board on the storage drive.

Figure 50. Installing the converter with the 2.5-inch storage drive into the plastic bracket

d. Slide the plastic bracket with the new 2.5-inch storage drive into the front-access storage enclosure

until it snaps into position.

Figure 51. Installing the plastic bracket with the 2.5-inch storage drive into the front-access storage enclosure

e. Press the notch to secure the enclosure cover and lock the enclosure cover with the key.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Device in the multi-drive conversion kit

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Chapter 9.Hardware removal and installation 119

The multi-drive conversion kit (hereafter referred to as kit) might be equipped with either one or both of the

following components:

• Slim optical drive

• Storage drive (such as hard disk drive, hybrid drive, or solid-state drive)

Slim optical drive

Note: The instructions on how to remove or install a slim optical drive in the kit also apply to the slim-optical-

drive adapter.

To remove or install a slim optical drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.

See “Optical drive” on page 109.

3. To remove the slim optical drive from the kit, do the following:

a. Press the clip through the hole in the top of the kit as shown and push forward the slim optical drive.

Then, remove the slim optical drive out of the kit.

Figure 52. Removing the slim optical drive from the kit

b. Detach the bracket as shown to remove it from the slim optical drive.

Figure 53. Removing the bracket from the slim optical drive

4. To install a new slim optical drive into the kit, do the following:

120 P520c Hardware Maintenance Manual

a. Align the three tabs on the bracket with the corresponding holes in the new slim optical drive. Then,

install the bracket to the new slim optical drive.

Figure 54. Installing the bracket to the new slim optical drive

b. Insert the new slim optical drive into the kit until you hear a click. The slim optical drive is secured in

place.

Figure 55. Installing the slim optical drive into the kit

5. Slide the kit into the flex bay and reconnect the cables.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

3.5-inch storage drive

To remove or install a 3.5-inch storage drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.

See “Optical drive” on page 109.

Chapter 9.Hardware removal and installation 121

3. Press the clip as shown to open the rear cover of the kit.

Figure 56. Opening the rear cover of the kit

4. Press both clips simultaneously toward each other and pull the conversion bracket out of the rear of the

kit.

Figure 57. Removing the conversion bracket from the kit

122 P520c Hardware Maintenance Manual

5. To remove the 3.5-inch storage drive, flex both sides of the conversion bracket and then remove the

drive out of the bracket. Do not touch the circuit board 1 on the drive.

Figure 58. Removing the storage drive from the bracket

6. To install a 3.5-inch storage drive, ensure that the conversion bracket is unfolded. To unfold the bracket,

do the following:

a. Remove pins 1 and install them into slots 2.

Figure 59. Removing pins and installing them into slots

Chapter 9.Hardware removal and installation 123

b. Release tabs 1, 2, and 3 from the corresponding slots.

Figure 60. Releasing tabs from the corresponding slots

c. Unfold the bracket as shown.

Figure 61. Unfolding the bracket

124 P520c Hardware Maintenance Manual

d. Insert tabs 1, 2, and 3 into the corresponding slots. Ensure that the tabs are secured in place.

Figure 62. Inserting tabs into the corresponding slots

7. Install a 3.5-inch storage drive into the bracket by doing the following:

a. Flex both sides of the bracket and align pins 1, 2, 3, and 4 on the bracket with the corresponding

holes in the new 3.5-inch storage drive.

b. Install the new 3.5-inch storage drive into the bracket. Do not touch the circuit board 5 on the drive.

Figure 63. Installing the new 3.5-inch storage drive into the bracket

Chapter 9.Hardware removal and installation 125

c. Slide the new 3.5-inch storage drive with bracket into the kit from the rear until the drive snaps into

position.

Figure 64. Installing the new 3.5-inch storage drive with bracket into the kit

8. Pivot the rear cover of the kit inward until you hear a click. Ensure that the rear cover is secured in place.

Figure 65. Pivoting the rear cover inward

9. Slide the kit into the flex bay and reconnect the cables.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

2.5-inch storage drive

To remove or install a 2.5-inch storage drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Ensure that all the cables are disconnected from the kit. Remove the kit from the front of the computer.

See “Optical drive” on page 109.

126 P520c Hardware Maintenance Manual

3. Press the clip as shown to open the rear cover of the kit.

Figure 66. Opening the rear cover of the kit

4. Press both clips simultaneously toward each other and pull the conversion bracket out of the rear of the

kit.

Figure 67. Removing the 2.5-inch storage drive from the kit

5. To remove the 2.5-inch storage drive, flex both sides of the conversion bracket and then remove the

drive out of the bracket. Do not touch the circuit board on the drive.

Figure 68. Removing the 2.5-inch storage drive from the bracket

Chapter 9.Hardware removal and installation 127

6. To install a 2.5-inch storage drive, ensure that the conversion bracket is folded. To fold the bracket, do

the following:

a. Remove pins 1 and install them into slots 2.

Figure 69. Removing pins and installing them into new slots

b. Pivot the bracket as shown to release tabs 1, 2, and 3 from the slots.

Figure 70. Pivoting the bracket

c. Fold the bracket as shown.

Figure 71. Folding the bracket

128 P520c Hardware Maintenance Manual

d. Insert tabs 1, 2, and 3 into the corresponding slots. Ensure that the tabs are secured in place.

Figure 72. Inserting the tabs into the corresponding slots

7. To install a 2.5-inch storage drive, do the following:

a. Flex the bracket and align pins 1, 2, 3, and 4 on the bracket with the corresponding holes in the

new 2.5-inch storage drive.

b. Install the new 2.5-inch storage drive into the bracket. Do not touch the circuit board 5 on the drive.

Figure 73. Installing the new 2.5-inch storage drive into the bracket

Chapter 9.Hardware removal and installation 129

c. Slide the new 2.5-inch storage drive with bracket into the kit from the rear until the drive snaps into

position.

Figure 74. Installing the new 2.5-inch storage drive with bracket into the kit

8. Pivot the rear cover of the kit inward until you hear a click. Ensure that the rear cover is secured in place.

Figure 75. Pivoting the rear cover inward

9. Slide the kit into the flex bay and reconnect the cables.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Coin-cell battery

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Your computer has a special type of memory that maintains the date, time, and settings for built-in features,

such as parallel-connector assignments (configuration). A coin-cell battery keeps this information active

when you turn off the computer.

130 P520c Hardware Maintenance Manual

The coin-cell battery normally requires no charging or maintenance throughout its life; however, no battery

lasts forever. If the coin-cell battery fails, the date and time information is lost.

Refer to the “Lithium coin-cell battery notice” in the Safety, Warranty, and Setup Guide for information about

disposing of the coin-cell battery.

To remove and install the coin-cell battery, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the coin-cell battery. See “Parts on the system board” on page 39.

3. Remove any PCIe cards that might prevent your access to the coin-cell battery. See “PCIe card” on

page 100.

4. Remove the old coin-cell battery as shown.

Figure 76. Removing the coin-cell battery

5. Install the new coin-cell battery as shown.

Figure 77. Installing the coin-cell battery

6. Reinstall the PCIe cards if you have removed them. See “PCIe card” on page 100.

7. Reinstall the computer cover and reconnect the cables. See “Completing the parts replacement” on

page 188.

Note: When the computer is turned on for the first time after the coin-cell battery is replaced, an error

message might be displayed. This is normal after the coin-cell battery is replaced.

8. Turn on the computer and all attached devices.

9. Use the Setup Utility program to set the date and time. See “Using the Setup Utility program” on page

63.

Cover presence switch

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

To remove or install the cover presence switch, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the cover presence switch. See “Computer components” on page 33.

3. To remove the cover presence switch, do the following:

Chapter 9.Hardware removal and installation 131

a. Disconnect the cover presence switch cable from the cover presence switch connector on the

system board. See “Parts on the system board” on page 39.

b. Remove the screw that secures the cover presence switch and remove the cover presence switch

from the chassis.

Figure 78. Removing the cover presence switch

4. To install the cover presence switch, do the following:

a. Align the screw hole in the cover presence switch with the corresponding hole in the chassis. Then

install the screw to secure the cover presence switch to the chassis.

Figure 79. Installing the cover presence switch

b. Connect the cover presence switch cable to the cover presence switch connector on the system

board. See “Parts on the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Power supply assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Although there are no moving parts in your computer after the power cord has been disconnected, the

following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.

CAUTION:

132 P520c Hardware Maintenance Manual

Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury,

seek medical care immediately.

DANGER

Disconnect all power cords from electrical outlets before removing the computer cover or any part

that has the above label attached.

To remove and install the power supply assembly, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. To remove the power supply assembly, do the following:

a. Disconnect the power supply assembly cables from the system board and all drives. See “Parts on

the system board” on page 39.

b. Release the power supply assembly cables from the cable clips and ties.

c. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the

power supply assembly. Then slide the power supply assembly to the front of the computer and then

lift it out of the chassis.

Figure 80. Removing the screws for the power supply assembly

3. To install the power supply assembly, do the following:

a. Ensure that the new power supply assembly is the correct replacement.

b. Install the new power supply assembly into the chassis so that the screw holes in the power supply

assembly align with those in the chassis.

c. Install and tighten the four screws to secure the power supply assembly.

Note: Use only screws provided by Lenovo.

d. Connect the power supply assembly cables to the system board and each of the drives.

e. Secure the power supply assembly cables with the cable clips and ties in the chassis.

Chapter 9.Hardware removal and installation 133

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Heat-sink-and-fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

CAUTION:

Avoid contact with hot components inside the computer. During operation, some components

become hot enough to burn the skin. Before you open the computer cover, turn off the computer,

disconnect power, and wait approximately 10 minutes for the components to cool.

To remove or install the heat-sink-and-fan assembly, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the system board.

3. Locate the heat-sink-and-fan assembly. See “Parts on the system board” on page 39.

4. To remove the heat-sink-and-fan assembly, do the following:

a. Disconnect the heat-sink-and-fan assembly cable from the microprocessor fan connector on the

system board. See “Parts on the system board” on page 39.

134 P520c Hardware Maintenance Manual

b. Follow the following sequence to remove the four screws that secure the heat-sink-and-fan

assembly to the system board:

• Partially remove screw a, then fully remove screw b, and then fully remove screw a.

• Partially remove screw c, then fully remove screw d, and then fully remove screw c.

Note: Carefully remove the four screws to avoid any possible damage to the system board. The four

screws cannot be removed from the heat-sink-and-fan assembly.

Figure 81. Removing the heat-sink-and-fan assembly

c. Lift the failing heat-sink-and-fan assembly off the system board.

Notes:

• You might have to gently twist the heat-sink-and-fan assembly to free it from the microprocessor.

• Do not touch the thermal grease while handling the heat-sink-and-fan assembly.

5. To install the heat-sink-and-fan assembly, do the following:

a. Apply appropriate amount of thermal grease to the new heat-sink-and-fan assembly.

b. Position the heat-sink-and-fan assembly on the system board. Ensure that the four screws are

aligned with the holes in the system board.

Note: Ensure that the heat-sink-and-fan assembly cable is toward the microprocessor fan connector

on the system board.

c. Follow the following sequence to install the four screws to secure the new heat-sink-and-fan

assembly. Do not over-tighten the screws.

• Partially tighten screw a, then fully tighten screw b, and then fully tighten screw a.

• Partially tighten screw c, then fully tighten screw d, and then fully tighten screw c.

Chapter 9.Hardware removal and installation 135

d. Connect the heat-sink-and-fan assembly cable to the microprocessor fan connector on the system

board. See “Parts on the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Primary storage drive

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

To remove or install the primary storage drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the primary storage drive. See “Computer components” on page 33.

3. To remove the primary storage drive, do the following:

a. Disconnect the signal cable and the power cable from the storage drive.

b. Pull the handle of the plastic 3.5-inch storage-drive bracket to remove the storage drive from the

storage drive bay.

Figure 82. Removing the primary storage drive

c. Flex the sides of the bracket to remove the storage drive from the bracket.

4. To install the primary storage drive, do the following:

a. Pull the handle of the plastic 3.5-inch storage-drive bracket to remove it from the storage drive bay.

136 P520c Hardware Maintenance Manual

b. To install a new storage drive into the bracket, flex the bracket and align pin 1, pin 2, pin 3, and pin

4 on the bracket with the corresponding holes in the storage drive. Do not touch the circuit board 5

on the bottom of the storage drive.

Figure 83. Installing the storage drive into the bracket

c. Slide the new storage drive into the storage drive bay until it snaps into position.

Figure 84. Installing the primary storage drive

d. Connect the signal cable and the power cable to the new storage drive.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Chapter 9.Hardware removal and installation 137

Secondary storage drive

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Note: Your computer comes with a secondary storage drive bay for installing or replacing a secondary 3.5-

inch storage drive or a 2.5-inch storage drive.

To remove or install the secondary storage drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the secondary storage drive. See “Computer components” on page 33.

3. To remove the secondary storage drive, do the following:

a. Disconnect the signal cable and the power cable from the storage drive.

b. Pull the handle of the plastic 3.5-inch storage-drive bracket to remove the storage drive from the

storage drive bay.

Figure 85. Removing the secondary storage drive

c. Flex the sides of the bracket to remove the storage drive from the bracket.

4. To install the secondary storage drive, do the following:

a. Pull the handle of the plastic 3.5-inch storage-drive bracket to remove it from the storage drive bay.

138 P520c Hardware Maintenance Manual

b. To install a new storage drive into the bracket, flex the bracket and align pin 1, pin 2, pin 3, and pin

4 on the bracket with the corresponding holes in the storage drive. Do not touch the circuit board 5

on the bottom of the storage drive.

Figure 86. Installing the storage drive into the bracket

c. Slide the new storage drive into the storage drive bay until it snaps into position.

Figure 87. Installing the secondary storage drive

d. Connect the signal cable and the power cable to the new storage drive.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Chapter 9.Hardware removal and installation 139

2.5-inch storage drive

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

The 2.5-inch storage drive is only available on some models.

To remove or install a 2.5-inch storage drive, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the desired storage drive bay. See “Internal storage drives” on page 41.

3. To remove a 2.5-inch storage drive, do the following:

a. Disconnect the signal cable and power cable from the storage drive.

b. Remove the plastic 3.5-inch storage-drive bracket with the 2.5-inch storage drive from the storage

drive bay. See “Primary storage drive” on page 136 or “Secondary storage drive” on page 138.

c. Flex the sides of the bracket to remove the 2.5-inch to 3.5-inch storage-drive converter from the

bracket.

Figure 88. Removing the 2.5-inch to 3.5-inch storage-drive converter from the 3.5-inch storage-drive bracket

140 P520c Hardware Maintenance Manual

d. Remove the four screws that secure the 2.5-inch storage drive. Then lift the storage drive out of the

storage-drive converter.

Figure 89. Removing the 2.5-inch storage drive from the storage-drive converter

4. To install a 2.5-inch storage drive, do the following:

a. Remove the plastic 3.5-inch storage-drive bracket from the storage drive bay. See “Primary storage

drive” on page 136 or “Secondary storage drive” on page 138.

b. Flex the sides of the bracket to remove the 2.5-inch to 3.5-inch storage-drive converter from the

bracket.

Chapter 9.Hardware removal and installation 141

c. Install a new 2.5-inch storage drive into the storage-drive converter. Then install the four screws to

secure the new storage drive to the storage-drive converter.

Figure 90. Installing a new 2.5-inch storage drive into the storage-drive converter

142 P520c Hardware Maintenance Manual

d. To install the storage-drive converter into the 3.5-inch storage-drive bracket, flex the bracket and

align pin 1, pin 2, pin 3, and pin 4 on the bracket with the corresponding holes in the converter.

Figure 91. Installing the storage-drive converter together with the 2.5-inch storage drive into the storage-drive

bracket

e. Install the storage-drive converter with the bracket into the desired storage drive bay. See “Primary

storage drive” on page 136 or “Secondary storage drive” on page 138.

f. Connect the signal cable and the power cable to the storage drive.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Front fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

Note: The front fan assembly is only available on some models.

To remove or install the front fan assembly, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. Locate the front fan assembly. See “Computer components” on page 33.

4. To remove the front fan assembly, do the following:

Chapter 9.Hardware removal and installation 143

a. Disconnect the front-fan assembly cable from the power fan connector on the system board. See

“Parts on the system board” on page 39.

b. The front fan assembly is attached to the chassis by four rubber mounts. Break or cut the rubber

mounts and gently pull the front fan assembly out of the chassis.

Figure 92. Removing the front fan assembly

5. To install the front fan assembly, do the following:

a. Align the new rubber mounts of the new front fan assembly with the corresponding holes in the

chassis. Push the rubber mounts through the holes.

b. Pull the tips of the rubber mounts until the front fan assembly is secured in place.

Figure 93. Installing the front fan assembly

c. Connect the front-fan assembly cable to the front-fan connector on the system board. See “Parts on

the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Rear fan assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

To remove or install the rear fan assembly, do the following:

144 P520c Hardware Maintenance Manual

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Locate the rear fan assembly. See “Computer components” on page 33.

3. To remove the rear fan assembly, do the following:

a. Disconnect the rear-fan assembly cable from the system fan connector on the system board. See

“Parts on the system board” on page 39.

b. The rear fan assembly is attached to the chassis by four rubber mounts. Break or cut the rubber

mounts and gently pull the rear fan assembly out of the chassis.

Figure 94. Removing the rear fan assembly

4. To install the rear fan assembly, do the following:

a. Align the new rubber mounts of the new rear fan assembly with the corresponding holes in the

chassis. Push the rubber mounts through the holes.

b. Pull the tips of the rubber mounts until the rear fan assembly is secured in place.

Figure 95. Installing the rear fan assembly

c. Connect the rear-fan assembly cable to the rear-fan connector on the system board. See “Parts on

the system board” on page 39.

Chapter 9.Hardware removal and installation 145

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Device in the 5.25-inch flex module

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

This section provides instructions on how to install or replace a device in the 5.25-inch flex module. Installing

and replacing a device in the 5.25-inch flex module involves the following operations:

• “Slim optical drive” on page 146

• “Card reader” on page 173

• “eSATA connector, IEEE 1394 connector, or USB-C connector” on page 151

• “Front Thunderbolt adapter kit” on page 153

• “Four-digit diagnostics display” on page 157

Slim optical drive

To remove or install a slim optical drive in the flex module, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex

module from the system board. See “Parts on the system board” on page 39.

3. Remove the flex module from the front of the computer. See “Optical drive” on page 109.

4. Lift the clip on the rear of the flex module. Then, slide the flex module cover to the rear of the flex module

to remove the cover.

Figure 96. Removing the flex module cover

5. To remove a slim optical drive, do the following:

a. Press the button as shown to remove the slim optical drive from the flex module.

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Figure 97. Removing the slim optical drive from the flex module

b. Remove the two screws that secure the clip to remove the plastic clip from the rear of the slim optical

drive.

Note: The plastic clip and the two screws need to be reused to install a new slim optical drive.

Figure 98. Removing the plastic clip from the slim optical drive

6. To install a slim optical drive, do the following:

a. If no slim optical drive has been installed in the flex module before, press the two metal clips 1 to

remove the plastic clip with the two screws as shown. Remove the two screws.

Figure 99. Removing the plastic clip with the two screws

Chapter 9.Hardware removal and installation 147

b. Install the two screws to secure the plastic clip on the rear of the new slim optical drive.

Figure 100. Installing the plastic clip to the slim optical drive

c. Slide the new slim optical drive with the plastic clip into the flex module until the slim optical drive

snaps into position.

Figure 101. Installing the slim optical drive in the flex module

7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the flex

module cover engage the rails on the flex module. Then, push the cover to the front of the flex module

until it snaps into position.

Figure 102. Reinstalling the flex module cover

8. Install the flex module into the flex bay. See “Optical drive” on page 109.

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9. Refer to the recorded information about the cable connections and routing. Reconnect all cables

connected to the flex module to the system board. See “Parts on the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Card reader

To remove or install a card reader in the flex module, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex

module from the system board. See “Parts on the system board” on page 39.

3. Remove the flex module from the front of the computer. See “Optical drive” on page 109.

4. Lift the clip on the side of the flex module upward. Then, slide the flex module cover to the rear of the

flex module to remove the cover.

Figure 103. Removing the flex module cover

5. If you are removing a card reader, do the following:

a. Pull the clip as shown to remove the card reader with the card reader retaining bracket out of the flex

module.

Figure 104. Removing the card reader in the flex module

Chapter 9.Hardware removal and installation 149

b. Flex the four clips on the sides of the card reader retaining bracket to remove the card reader from

the bracket.

Figure 105. Removing the card reader from the card reader retaining bracket

6. To install a card reader, do the following:

a. To install a new card reader into the card reader retaining bracket, align the four holes in the card

reader with the corresponding studs on the bracket. Then, press the new card reader downward until

it snaps into position.

Figure 106. Installing the card reader into the card reader retaining bracket

b. Note the orientation of the new card reader and route the card reader cable into the cable clip. Hold

the clip on the card reader retaining bracket. Then, insert the new card reader into the card reader

slot in flex module until it snaps into position.

Figure 107. Installing the card reader in the flex module

7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the flex

module cover engage the rails on the flex module. Then, push the cover to the front of the flex module

until it snaps into position.

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Figure 108. Reinstalling the flex module cover

8. Install the flex module into the flex bay. See “Optical drive” on page 109.

9. Refer to the recorded information about the cable connections and routing. Reconnect all cables

connected to the flex module to the system board. For the card reader, connect the card reader cable to

the 15-in-1 card reader connector 39 on the system board. See “Parts on the system board” on page

39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

eSATA connector, IEEE 1394 connector, or USB-C connector

To remove or install the eSATA connector, IEEE 1394 connector, or USB-C connector in the flex module, do

the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex

module from the system board. See “Parts on the system board” on page 39.

3. Remove the flex module from the front of the computer. See “Optical drive” on page 109.

4. Lift the clip on the side of the flex module upward. Then, slide the flex module cover to the rear of the

flex module to remove the cover.

Figure 109. Removing the flex module cover

Chapter 9.Hardware removal and installation 151

5. Press the two clips toward each other as shown, and then pull the eSATA connector, IEEE 1394

connector, or USB-C connector out of the flex module.

Figure 110. Removing the eSATA connector, IEEE 1394 connector, or USB-C connector in the flex module

6. To install the eSATA connector, IEEE 1394 connector, or USB-C connector, do the following:

a. Note the orientation of the eSATA connector, IEEE 1394 connector, or USB-C connector and route

the cable into the cable clip.

b. Place the eSATA connector, IEEE 1394 connector, or USB-C connector into the metal retainer. Then,

insert the connector into the corresponding slot in the flex module as shown.

Figure 111. Installing the eSATA connector, IEEE 1394 connector, or USB-C connector in the flex module

152 P520c Hardware Maintenance Manual

7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the flex

module cover engage the rails on the flex module. Then, push the cover to the front of the flex module

until it snaps into position.

Figure 112. Reinstalling the flex module cover

8. Install the flex module into the flex bay. See “Optical drive” on page 109.

9. Refer to the recorded information about the cable connections and routing, reconnect all cables

connected to the flex module to the system board. See “Parts on the system board” on page 39. For the

eSATA connector, IEEE 1394 connector, or USB-C connector, connect the cables to the system board

as follows:

• Connect the eSATA connector cable to the eSATA connector on the system board.

• Connect the IEEE 1394 connector cable to the IEEE 1394 adapter.

• Connect the USB-C connector cable to the USB 3.0 extension connector or 15-in-1 card reader

connector on the system board.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Front Thunderbolt adapter kit

The front Thunderbolt adapter kit includes the following parts:

• A front Thunderbolt I/O adapter

• A front Thunderbolt PCIe x4 card

• A bezel

• A general-purpose input/output (GPIO) cable

• A mini-SAS cable

• An internal DP-to-DP cable

• An external DP-to-DP cable

To remove or install a front Thunderbolt adapter kit, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex

module from the system board. See “Parts on the system board” on page 39.

3. Remove the flex module from the front of the computer. See “Optical drive” on page 109.

Chapter 9.Hardware removal and installation 153

4. Lift the clip on the rear of the flex module, and then slide the flex module cover to the rear of the flex

module.

Figure 113. Removing the flex module cover

5. To remove a front Thunderbolt I/O adapter, do the following:

a. Remove all the cables connected to the front Thunderbolt I/O adapter.

b. Pull the clip as shown to remove the front Thunderbolt I/O adapter and the retaining bracket out of

the flex module.

Figure 114. Removing the front Thunderbolt adapter and the retaining bracket out of the flex module

c. Flex the four clips on the sides of the retaining bracket to remove the front Thunderbolt I/O adapter

from the bracket.

Figure 115. Removing the front Thunderbolt I/O adapter from the retaining bracket

6. To install a front Thunderbolt I/O adapter, do the following:

154 P520c Hardware Maintenance Manual

a. If necessary, remove the dummy bezel. Then, install the bezel in the front Thunderbolt adapter kit to

the flex module.

Figure 116. Installing the bezel to the flex module

b. Align the four holes in the front Thunderbolt I/O adapter with the corresponding mounting studs on

the bracket. Then, press the card downward until it snaps into position.

Figure 117. Installing the front Thunderbolt I/O adapter into the retaining bracket

c. Hold the clip on the retaining bracket. Then insert the front Thunderbolt I/O adapter and the retaining

bracket into the flex module as shown until they snap into position.

Chapter 9.Hardware removal and installation 155

Figure 118. Installing the front Thunderbolt adapter and the retaining bracket into the flex module

d. Install the front Thunderbolt PCIe x4 card into a PCIe 3.0 x4 card slot on the system board. See

“PCIe card” on page 100 and “Parts on the system board” on page 39.

e. Connect the cables to the front Thunderbolt I/O adapter.

• Connect the power cable in the flex module to the 4-pin power connector a.

• Connect the GPIO cable to the connector b.

• Connect the internal DP-to-DP cable to the DisplayPort connector c.

• Connect the mini-SAS cable to the SAS connector d.

abcd

Figure 119. Front Thunderbolt adapter cable connection

f. Route the cables through the two holes in the rear of the flex module.

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7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the cover

engage the rails on the flex module. Then, push the cover to the front of the flex module until it snaps

into position.

Figure 120. Reinstalling the flex module cover

8. Install the flex module into the flex bay. See “Optical drive” on page 109.

9. Refer to the recorded information about the cable connections and routing. Reconnect all cables

connected to the flex module to the system board. For the front Thunderbolt adapter kit, connect the

cables to the system board and the front Thunderbolt PCIe x4 card as follows:

• Connect the GPIO cable to the Thunderbolt control connector ( 47 ) on the system board. See “Parts

on the system board” on page 39.

• Connect the internal DP-to-DP cable to the DisplayPort connector on the front Thunderbolt PCIe x4

card.

• Connect the mini-SAS cable to the SAS connector on the front Thunderbolt PCIe x4 card.

• Connect the external DP-to-DP cable to the DisplayPort connector on the front Thunderbolt PCIe x4

card and the DisplayPort connector on the graphics card.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Four-digit diagnostics display

To remove or install a four-digit diagnostics display in the flex module, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex

module from the system board. See “Parts on the system board” on page 39.

3. Disconnect the four-digit-diagnostics-display cable from the four-digit-diagnostics-display connector on

the system board. See “Parts on the system board” on page 39.

4. Remove the flex module from the front of the computer. See “Optical drive” on page 109.

Chapter 9.Hardware removal and installation 157

5. Lift the clip on the rear of the flex module, and then slide the flex module cover to the rear of the flex

module.

Figure 121. Removing the flex module cover

6. To remove a four-digit diagnostics display, press the two clips toward each other and push forward the

four-digit diagnostics display. Then, pull the four-digit diagnostics display out of the flex module.

Figure 122. Removing the four-digit diagnostics display

7. To install a four-digit diagnostics display, do the following:

158 P520c Hardware Maintenance Manual

a. Press the two clips toward each other as shown and push the dummy bezel out of the flex module.

Figure 123. Removing the dummy bezel

b. Insert the four-digit-diagnostics-display cable into the corresponding slot. Then, push the four-digit

diagnostics display as shown until it snaps into position.

Figure 124. Installing the four-digit diagnostics display

Chapter 9.Hardware removal and installation 159

8. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the cover

engage the rails on the flex module. Then, push the cover to the front of the flex module until it snaps

into position.

Figure 125. Reinstalling the flex module cover

9. Install the flex module into the flex bay. See “Optical drive” on page 109.

10. Refer to the recorded information about the cable connections and routing. Reconnect all cables

connected to the flex module to the system board. For the four-digit diagnostics display, connect the

four-digit-diagnostics-display cable to the four-digit-diagnostics-display connector on the system

board.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

M.2 solid-state drive

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter

1 “Read this first: Important safety information” on page 1.

M.2 solid-state drive in the storage drive bracket

To remove or install the M.2 solid-state drive in the storage drive bracket, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. To remove the failing M.2 solid-state drive, do the following:

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a. Unlock the M.2 solid-state drive carrier with the provided key as shown. Store the key in a secure

place for later use. Press the eject button to eject the carrier from the storage drive bracket. Then,

grasp the M.2 solid-state drive carrier by its edge and gently pull it out of the bracket.

Figure 126. Removing the M.2 solid-state drive carrier

b. Remove two screws and slide the cover as shown to remove the cover from the carrier.

Figure 127. Removing the cover of the M.2 solid-state drive carrier

Chapter 9.Hardware removal and installation 161

c. Loosen the screw that secures the M.2 solid-state drive. Then, remove the M.2 solid-state drive out

of the slot at an angle of about 20 degrees.

Note: Do not touch the circuit board of the M.2 solid-state drive.

Figure 128. Removing the M.2 solid-state drive

3. To install the M.2 solid-state drive, do the following:

a. Insert the new M.2 solid-state drive into the slot at an angle of about 20 degrees. Pivot the M.2 solid-

state drive downward. Then, tighten the screw to secure the M.2 solid-state drive.

Figure 129. Installing the M.2 solid-state drive

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b. Reinstall the cover of the carrier as shown and reinstall the screws to secure the cover.

Figure 130. Installing the cover of the M.2 solid-state drive carrier

c. Reinstall the carrier into the bracket as shown until it snaps in to position. Lock the carrier with the

key. Always store the key in a secure place.

Figure 131. Reinstalling the M.2 solid-state drive carrier

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Chapter 9.Hardware removal and installation 163

M.2 solid-state drive in the M.2 solid-state drive holder

To remove or install an M.2 solid-state drive in the M.2 solid-state drive holder, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the M.2 solid-state drive slots.

3. Locate the M.2 solid-state drive slots. See “Parts on the system board” on page 39.

4. Untie the cables that prevent your access to the M.2 solid-state drive slots from the cable clip.

5. Remove the cover of the front fan assembly.

Figure 132. Removing the cover of the front fan assembly

6. To remove an M.2 solid-state drive, do the following:

a. Turn the mounting stud 90-degree counterclockwise to release the heat sink. Then, lift the heat sink

off the M.2 solid-state drive holder.

Figure 133. Removing the heat sink from the M.2 solid-state drive holder

164 P520c Hardware Maintenance Manual

b. Pull the handle of the retention latch outward to the open position. The M.2 solid-state drive is

released from the secured position and pivots upward.

Figure 134. Opening the retention latch

c. Remove the M.2 solid-state drive out of the slot.

Figure 135. Removing the M.2 solid-state drive

7. To install an M.2 solid-state drive, do the following:

Chapter 9.Hardware removal and installation 165

a. If necessary, adjust the location of the retention latch by moving it form the original place to a new

one to suit the length of the new M.2 solid-state drive.

Figure 136. Adjusting the location of the retention latch on the M.2 solid-state drive holder

b. Pull the handle of the retention latch outward to the open position.

Figure 137. Pulling the handle of the retention latch

166 P520c Hardware Maintenance Manual

c. Hold the new M.2 solid-state drive by its edges and ensure that the circuit board side is facing

upward. Align the contact edge of the new drive with the key in the corresponding slot. Then carefully

insert the new drive into the slot at an angle of about 20 degrees and pivot the new drive downward.

Notes:

• Do not touch the circuit board of the M.2 solid-state drive.

• If only one M.2 solid-state drive is installed, ensure that the drive is installed in the M.2 solid-state

drive slot 1 ( 14 ). See “Parts on the system board” on page 39.

Figure 138. Installing the M.2 solid-state drive

d. Insert the plug of the retention latch into the hole to secure the new drive.

Figure 139. Closing the retention latch

Chapter 9.Hardware removal and installation 167

8. Insert two hooks on the heat sink into the corresponding holes in the M.2 solid-state drive holder as

shown. Then, press the heat sink downward. Ensure that the mounting stud on the heat sink is inserted

into the hole in the M.2 solid-state drive holder.

Figure 140. Installing the heat sink onto the M.2 solid-state drive holder

9. Press the mounting stud downward. Then, turn the mounting stud 90-degree clockwise to secure the

heat sink to the M.2 solid-state drive holder.

Figure 141. Securing the heat sink to the M.2 solid-state drive holder

10. Reinstall the cover of the front fan assembly.

11. Retie the cables that you have untied with the cable clip.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

168 P520c Hardware Maintenance Manual

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Thermal sensor

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

To remove or install the thermal sensor, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. To remove the thermal sensor, do the following:

a. Locate the thermal sensor. See “Major FRUs and CRUs” on page 34.

b. Disconnect the thermal-sensor cable from the thermal sensor connector on the system board. See

“Parts on the system board” on page 39.

c. From the inner side of the chassis, press the upper retaining clip that secures the plastic holder of the

thermal sensor downward and push the clip outward to release the clip. Then disengage the plastic

holder from the chassis.

Figure 142. Removing the thermal sensor

d. Pull the entire thermal sensor out of the chassis.

4. To install the thermal sensor, do the following:

Chapter 9.Hardware removal and installation 169

a. Insert the cable of the new thermal sensor into the lower hole 1 in the chassis. Then align the two

tabs on the plastic holder holding the thermal sensor with the two holes 1 and 2 in the chassis, and

push the plastic holder until it snaps into position.

Figure 143. Installing the thermal sensor

b. Connect the thermal sensor cable to the thermal sensor connector on the system board. See “Parts

on the system board” on page 39.

5. Reinstall the front bezel. See “Front bezel” on page 99.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Internal speaker

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

To remove or install the internal speaker, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. To remove the internal speaker, do the following:

a. Locate the internal-speaker connector on the system board. See “Parts on the system board” on

page 39.

b. Disconnect the internal-speaker cable from the internal-speaker connector on the system board.

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c. Push the metal tab 1 on the right side of the internal speaker and slide the internal speaker toward

the right to completely remove it from the chassis.

Figure 144. Removing the old internal speaker

3. To install the internal speaker, do the following:

a. Position the new internal speaker into the four metal clips 1 and push the internal speaker toward the

left until it is secured in place.

Figure 145. Installing the internal speaker

Chapter 9.Hardware removal and installation 171

b. Connect the internal-speaker cable to the internal-speaker connector on the system board. See

“Parts on the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Front audio and USB assembly

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

To remove or install the front audio and USB assembly, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. To remove the front audio and USB assembly, do the following:

a. Locate the front audio and USB assembly. See “Computer components” on page 33.

b. Note the cable routing and connection. Then, disconnect the front audio and USB assembly cables

from the system board. See “Parts on the system board” on page 39.

c. Remove the screw that secures the front audio and USB assembly. Slide the front audio and USB

assembly to the right as shown to remove it from the chassis.

Figure 146. Removing the front audio and USB assembly

4. To install the front audio and USB assembly, do the following:

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a. Route the cables of the new front audio and USB assembly through the corresponding square hole in

the front of the chassis. Then position the new front audio and USB assembly into the chassis and

slide it to the left as shown. Install the screw to secure the new front audio and USB assembly in

place.

Figure 147. Installing the front audio and USB assembly

b. Connect the cables of the new front audio and USB assembly to the front audio connector and the

front USB 3.0 connector on the system board. See “Parts on the system board” on page 39.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Card reader

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

To remove or install the card reader, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. To remove the card reader, do the following:

a. Locate the card reader. See “Computer components” on page 33.

b. Disconnect the card reader cable from the system board. See “Parts on the system board” on page

39.

c. Remove the front audio and USB assembly. See “Front audio and USB assembly” on page 172.

Chapter 9.Hardware removal and installation 173

d. Remove the two screws that secure the card reader. Then carefully pull out the card reader from the

rear of the front audio and USB assembly.

Figure 148. Removing the card reader

4. To install the card reader, do the following:

a. Install the new card reader into the card reader slot from the rear of the front audio and USB

assembly. Then install the two screws to secure the card reader.

Note: Carefully handle the card reader by its edges.

Figure 149. Installing the new card reader

b. Install the front audio and USB assembly into the chassis. See “Front audio and USB assembly” on

page 172.

c. Connect the card reader cable to a USB 2.0 connector on the system board. See “Parts on the

system board” on page 39.

5. Reinstall the front bezel. See “Front bezel” on page 99.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Wi-Fi units

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

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The Wi-Fi units include a Wi-Fi adapter card, a Wi-Fi card module, a front Wi-Fi antenna, and a rear Wi-Fi

antenna.

Note: Depending on the model, the Wi-Fi units might look slightly different from the illustrations.

Front Wi-Fi antenna

To remove or install the front Wi-Fi antenna, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Remove the front bezel. See “Front bezel” on page 99.

3. To remove the front Wi-Fi antenna, do the following:

a. Disconnect the front-antenna cable from the Wi-Fi card module.

Figure 150. Disconnecting the front-antenna cable

b. Remove the front antenna and cable from the chassis.

Figure 151. Removing the front Wi-Fi antenna

4. To install the front Wi-Fi antenna, do the following:

Chapter 9.Hardware removal and installation 175

a. Peel off the paper that protects the sticker on the front antenna. Remove the plastic cover from the

front-antenna cable connector.

Figure 152. Peeling off the paper that protects the sticker and removing the plastic cover

b. Stick the front antenna to the front panel as shown. Then, insert the front-antenna cable into the hole

in the front panel.

Figure 153. Installing the front Wi-Fi antenna

c. Connect the front-antenna cable to the Wi-Fi card module.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Rear Wi-Fi antenna

To remove or install the rear Wi-Fi antenna, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. To remove the rear Wi-Fi antenna, do the following:

a. Straighten the rear Wi-Fi antenna so that it can be more easily twisted.

176 P520c Hardware Maintenance Manual

b. Hold the thicker end of the rear Wi-Fi antenna and unscrew the Wi-Fi antenna from the rear of the

computer.

Figure 154. Removing the rear Wi-Fi antenna

3. To install the rear Wi-Fi antenna, do the following:

a. Install the rear Wi-Fi antenna to the rear-antenna cable connector attached on the rear of the

computer.

b. Adjust the angle of the rear Wi-Fi antenna to avoid the risk of breaking the antenna by accident.

Figure 155. Installing the rear Wi-Fi antenna

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Wi-Fi adapter card

To remove or install the Wi-Fi units, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. To remove the Wi-Fi adapter card, do the following:

Chapter 9.Hardware removal and installation 177

a. If your computer comes with a Wi-Fi card module that supports the Bluetooth function, disconnect

the Bluetooth cable from the Wi-Fi adapter card.

Figure 156. Disconnecting the Bluetooth cable

b. Remove the rear Wi-Fi antenna. See “ Rear Wi-Fi antenna” on page 176.

c. At the rear of the computer, press the release button 1 to open the PCIe card latch 2.

Figure 157. Opening the PCIe card latch

178 P520c Hardware Maintenance Manual

d. Grasp the Wi-Fi adapter card that is currently installed and gently pull it out of the slot.

Figure 158. Removing the Wi-Fi adapter card

Note: The card fits tightly into the slot. If necessary, alternately move each side of the card a small

amount until the card is removed from the slot.

3. To install the Wi-Fi adapter card, do the following:

a. Install the Wi-Fi adapter card into a PCIe card slot on the system board. See “Parts on the system

board” on page 39. Then, pivot the card latch to the closed position to secure the Wi-Fi adapter card.

Figure 159. Installing the Wi-Fi adapter card

b. If the installed Wi-Fi card module supports the Bluetooth function, connect a Bluetooth cable from

the Bluetooth connector on the Wi-Fi adapter card to the USB 2.0 connector on the system board.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Wi-Fi card module

To remove or install the Wi-Fi card module, do the following:

1. Remove the Wi-Fi adapter card from the computer. See “Wi-Fi adapter card” on page 177.

2. To remove the Wi-Fi card module, do the following:

Chapter 9.Hardware removal and installation 179

a. Disconnect the front and rear Wi-Fi antenna cables from the Wi-Fi card module.

b. Remove the screw that secures the Wi-Fi card module to the Wi-Fi adapter card.

c. Pull the Wi-Fi card module out of the mini PCIe slot.

Figure 160. Removing the Wi-Fi card module

3. To install the Wi-Fi card module, do the following:

a. Insert the Wi-Fi card module into the mini PCIe slot.

b. Install a screw to secure the Wi-Fi card module to the Wi-Fi adapter card.

c. Connect the front and rear Wi-Fi antenna cables to the Wi-Fi card module.

Figure 161. Installing the Wi-Fi antenna cables

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

180 P520c Hardware Maintenance Manual

Microprocessor

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

CAUTION:

The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off the

computer and wait several minutes until the computer is cool.

Notes:

• Ensure that you install the correct type of microprocessor option your computer supports.

• Your microprocessor, socket, and socket cover might look slightly different from the illustrations in this

topic.

To replace the microprocessor, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the system board.

3. Locate and remove the heat-sink-and-fan assembly. See “Heat-sink-and-fan assembly” on page 134.

Note: Place the heat-sink-and-fan assembly on its side. Ensure that the thermal grease on the bottom

of it does not get in contact with anything.

4. To remove the microprocessor, do the following:

a. Open the small handle 1 by gently pressing down the small handle. Then pull the small handle

slightly outward to release it from the secured position. Then, open the other small handle 2 by

following the same instructions. Ensure that the small handles are in the fully open position.

Note: There are two marks on the microprocessor retainer. You must open the small handle marked

with first and then you can open the other small handle marked with .

Figure 162. Opening the handles

Chapter 9.Hardware removal and installation 181

b. Gently press down the small handle 1 to open the microprocessor retainer. Pivot the retainer upward

until it is in the fully open position.

Figure 163. Opening the microprocessor retainer

c. Lift the microprocessor straight up and out of the microprocessor socket. Place the old

microprocessor on a static-protective surface.

Notes:

• Your microprocessor and socket might look different from the one illustrated.

• Touch only the edges of the microprocessor. Do not touch the gold contacts on the bottom.

• Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must

be kept as clean as possible.

Figure 164. Removing the microprocessor

5. To install the microprocessor, do the following:

a. Touch the static-protective package that contains the new microprocessor to any unpainted surface

on the outside of the computer. Then, remove the new microprocessor from the package.

182 P520c Hardware Maintenance Manual

b. Remove the new microprocessor from the protective cover that protects the gold contacts on the

bottom of the new microprocessor. Do not touch the pins on the microprocessor socket or the gold

contacts on the bottom of the new microprocessor.

Figure 165. Do not touch the pins

c. Note the orientation of the new microprocessor. Hold the new microprocessor by its edges and align

the notches 1 on it with the tabs 2 in the microprocessor socket. Then, carefully lower the new

microprocessor straight down into the microprocessor socket.

Note: The small triangle 3 on one corner of the new microprocessor is the microprocessor

orientation indicator. The new microprocessor is in the correct orientation when this indicator faces

the beveled corner 4 of the microprocessor socket.

Figure 166. Installing the microprocessor

Chapter 9.Hardware removal and installation 183

d. Pivot the microprocessor retainer downward to close the retainer.

Figure 167. Closing the microprocessor retainer

e. Gently press down the small handle 2 and then push the handle inward to secure it. Then gently

press down the small handle 1 and push the handle inward to lock the microprocessor retainer into

position. Ensure that the new microprocessor is secured in the socket.

Note: There are two marks on the microprocessor retainer. Ensure that you close the small handle

marked with first and then close the small handle marked with . Always follow the

correct sequence when you close the small handles.

Figure 168. Securing the microprocessor in the socket

6. Reinstall the heat-sink-and-fan assembly. See “Heat-sink-and-fan assembly” on page 134.

7. If you are instructed to return the old microprocessor, follow all packaging instructions and use any

packaging materials that are supplied to you for shipping.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

System board

Attention: Before you replace any FRU, be sure to read and understand Chapter 1 “Read this first:

Important safety information” on page 1.

CAUTION:

The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off the

computer and wait several minutes until the computer is cool.

184 P520c Hardware Maintenance Manual

To remove or install the system board, do the following:

1. Prepare your computer. See “Preparing your computer and removing the computer cover” on page 97.

2. Lay the computer on its side for easier access to the system board.

3. Remove all memory modules and PCI cards that are currently installed. See “Memory module” on page

107 and “PCIe card” on page 100.

4. Record the cable routing and cable connections and then disconnect all cables from the system board.

See “Parts on the system board” on page 39.

5. Remove the heat-sink-and-fan assembly. See “Heat-sink-and-fan assembly” on page 134.

6. Remove the rear fan assembly. See “Rear fan assembly” on page 144.

7. Remove the eight screws that secure the system board by following the sequence shown in the

following illustration.

Figure 169. Removing the eight screws that secure the system board

8. Slide the system board to the front of the computer and then carefully lift the system board out of the

chassis.

9. Remove the microprocessor from the failing system board and install it on the new system board. See

“Microprocessor” on page 181.

Chapter 9.Hardware removal and installation 185

10. Install the new system board into the chassis by aligning the eight screw holes in the new system board

with the corresponding mounting studs on the chassis. Then, install the eight screws in the sequence as

shown to secure the new system board.

Figure 170. Installing the eight screws to secure the system board

11. Install the heat-sink-and-fan assembly and connect its cable to the new system board. See “Heat-sink-

and-fan assembly” on page 134.

12. Install the rear fan assembly. See “Rear fan assembly” on page 144.

13. Install all memory modules and PCI cards removed from the failing system board onto the new system

board. See “Memory module” on page 107 and “PCIe card” on page 100.

14. Refer to your record to connect cables to the new system board. You also can refer to “Parts on the

system board” on page 39 to help you locate the connectors on the system board and connect cables.

15. To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

The failing system board must be returned with a microprocessor socket cover to protect the pins during

shipping and handling. Install the microprocessor socket covers removed from the new system board on the

failing system board.

To install the microprocessor socket cover, do the following:

Note: Your microprocessor socket and cover might look slightly different from the illustration.

186 P520c Hardware Maintenance Manual

1. Pivot the microprocessor retainer downward to close the retainer.

Figure 171. Closing the microprocessor retainer

2. Gently press down the small handle 2, and then push the handle inward to secure it. Then gently press

down the small handle 1 and push the handle inward to lock the microprocessor retainer into position.

Figure 172. Securing the microprocessor in the socket

3. Position the microprocessor socket cover on the microprocessor socket as shown. Then, lower the

socket cover straight down into the microprocessor socket on the system board.

Figure 173. Installing the microprocessor socket cover

What to do next:

• To work with another piece of hardware, go to the appropriate section.

• To complete the installation or replacement, go to “Completing the parts replacement” on page 188.

Chapter 9.Hardware removal and installation 187

Completing the parts replacement

CAUTION:

After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting

power and operating the computer. This action is important to help prevent unexpected electrical

shock and help ensure the containment of an unexpected fire that could happen under extremely rare

conditions.

After completing the installation or replacement for all parts, reinstall the computer cover and reconnect

cables. Depending on the parts you installed or replaced, you might need to confirm the updated information

in the Setup Utility program. Refer to “Using the Setup Utility program” on page 63.

To reinstall the computer cover and reconnect cables to your computer, do the following:

1. Ensure that all components have been reassembled correctly and that no tools or loose screws are left

inside your computer. See “Computer components” on page 33 for the locations of various components

in your computer.

2. Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of

the hinges and sides of the computer chassis to avoid interference with reinstalling the computer cover.

3. Position the computer cover on the chassis so that the rail guides on the bottom of the computer cover

engage the rails on the chassis. Then, push the cover to the front of the computer until it snaps into

position.

Figure 174. Reinstalling the computer cover

4. Install the screws to secure the computer cover.

5. Place the computer in an upright position.

188 P520c Hardware Maintenance Manual

6. If there is any locking device available, lock the computer cover. See “Preparing your computer and

removing the computer cover” on page 97.

7. Reconnect the external cables and power cords to the corresponding connectors on the computer. See

“Hardware locations” on page 29.

8. Update the configuration of your computer if necessary. See “Using the Setup Utility program” on page

63.

9. If a newly installed hardware component does not work correctly, update the device driver. See

“Keeping your computer current” on page 58.

Chapter 9.Hardware removal and installation 189

190 P520c Hardware Maintenance Manual

Chapter 10. Getting information, help, and service

This chapter provides information about getting help and support from Lenovo.

Information resources

You can use the information in this section to access useful resources relating to your computing needs.

Accessing the user guide in various languages

To access the user guide in various languages, go to:

https://support.lenovo.com

Windows help system

The Windows help system provides you with detailed information about using the Windows operating

system.

Note: Using the help for Windows 10 requires an active Internet connection.

To access the Windows help system, do the following:

1. Click the Start button to open the Start menu.

2. Click Get Help.

Safety and warranty

The Safety, Warranty, and Setup Guide provided with your computer contains important safety information,

product warranty terms, initial setup procedure, and legal notices. Ensure that you read and understand all

safety information in the Safety, Warranty, and Setup Guide before using your computer.

In addition, read and understand Chapter 1 “Read this first: Important safety information” on page 1 before

using your computer. This preface provides additional safety information that applies to topics and tasks

described in this User Guide.

Lenovo Web site

The Lenovo Web site (https://www.lenovo.com) provides up-to-date information and services to help you buy,

upgrade, and maintain your computer. You also can do the following:

• Shop for desktop and notebook computers, monitors, projectors, upgrades, and accessories for your

computer, and special offers.

• Purchase additional services, such as support for hardware, operating systems, programs, network setup

and configuration, and custom installations.

• Purchase upgrades and extended hardware repair services.

• Access troubleshooting and support information for your computer model and other supported products.

• Find a Service Provider located near you.

Lenovo Support Web site

Technical support information is available on the Lenovo Support Web site at:

https://support.lenovo.com

This Web site is updated with the latest support information such as the following:

• Drivers and software

• Diagnostic solutions

• Product and service warranty

• Product and parts details

• User guides and manuals

• Knowledge base and frequently asked questions

• Lenovo Support phone numbers

Frequently asked questions

For the answers to frequently asked questions about your computer, go to:

http://www.lenovo.com/support/faq

Help and service

This section provides information about obtaining help and service.

Calling for service

During the warranty period, you can get help and information by telephone through the Customer Support

Center. For the warranty period of your computer, go to https://www.lenovo.com/warranty-status. For a list of

Lenovo Support phone numbers, go to https://pcsupport.lenovo.com/supportphonelist.

Note: Phone numbers are subject to change without notice. If the number for your country or region is not

provided, contact your Lenovo reseller or Lenovo marketing representative.

The following services are available during the warranty period:

• Problem determination - Trained service personnel are available to assist you with determining a

hardware problem and deciding what action is necessary to fix the problem.

• Hardware repair - If the problem is caused by hardware under warranty, trained service personnel are

available to provide the applicable level of service.

• Engineering Change management - There might be changes that are required after a product has been

sold. Lenovo or your reseller will make selected Engineering Changes (ECs) that apply to your hardware

available.

These items are not covered by the warranty:

• Replacement or use of parts not manufactured for or by Lenovo or non-warranted Lenovo parts

• Identification of software problem sources

• Configuration of BIOS as part of an installation or upgrade

• Changes, modifications, or upgrades to device drivers

• Installation and maintenance of network operating systems (NOS)

• Installation and maintenance of programs

If possible, be at your computer when you call. Have the following information available:

• Machine type and model

• Serial numbers of your hardware products

• Description of the problem

• Exact wording of any error messages

• Hardware and software configuration information

192 P520c Hardware Maintenance Manual

Using other services

You might travel with your computer or relocate it to a country or region where the machine type for your

desktop or notebook computer is sold. In such a situation, your computer might be eligible for International

Warranty Service, which automatically entitles you to obtain warranty service throughout the warranty period.

Service will be performed by service providers authorized to perform warranty service.

Service methods and procedures vary by country, and some services might not be available in all countries.

International Warranty Service is delivered through the method of service (such as depot, carry-in, or on-site

service) that is provided in the servicing country. Service centers in certain countries might not be able to

service all models of a particular machine type. In some countries, fees and restrictions might apply at the

time of service.

To determine whether your computer is eligible for International Warranty Service and to view a list of the

countries or regions where service is available, go to https://support.lenovo.com.

For technical assistance with the installation of or questions related to Service Packs for your preinstalled

Microsoft Windows product, go to https://support.microsoft.com. You also can contact the Lenovo Customer

Support Center for help. Some fees might apply.

Purchasing additional services

During and after the warranty period, you can purchase additional services. Examples of these additional

services include:

• Support for hardware, operating systems, and programs

• Network setup and configuration services

• Upgraded or extended hardware repair services

• Custom installation services

Service availability and service name might vary by country or region. For more information about these

services, go to the Lenovo Web site at:

https://www.lenovo.com

Chapter 10.Getting information, help, and service 193

194 P520c Hardware Maintenance Manual

Appendix A. System memory speed

The Intel Xeon® microprocessor families compatible with this ThinkStation computer feature an integrated

memory controller. The memory controller provides the microprocessor with direct access to the system

memory. Therefore, the system memory speed will be determined by the memory module type, frequency,

size (capacity), the number of memory modules installed, and the microprocessor model.

Notes:

• The actual system memory speed of the memory modules varies depending on the microprocessor

model. For example, your computer comes with 2666 MT/s memory modules, but microprocessor only

supports up to 2400 MT/s memory modules. Then the system memory speed will be no faster than 2400

MT/s.

• The microprocessor models supported in your computer might vary. For a list of supported

microprocessor models, contact the Lenovo Customer Support Center.

196 P520c Hardware Maintenance Manual

Appendix B. Supplemental information about the Ubuntu

operating system

In limited countries or regions, Lenovo offers customers an option to order computers with the preinstalled

Ubuntu® operating system.

If the Ubuntu operating system is available on your computer, read the following information before you use

the computer. Ignore any information related to Windows-based programs, utilities, and Lenovo preinstalled

applications in this documentation.

Accessing the Lenovo Limited Warranty

This product is covered by the terms of the Lenovo Limited Warranty (LLW), version L505-0010-02 08/2011.

You can view the LLW in a number of languages from the following Web site. Read the Lenovo Limited

Warranty at:

https://www.lenovo.com/warranty/llw_02

The LLW also is preinstalled on the computer. To access the LLW, go to the following directory:

/usr/share/doc/lenovo-doc

If you cannot view the LLW either from the Web site or from your computer, contact your local Lenovo office

or reseller to obtain a printed version of the LLW.

Accessing the Ubuntu help system

The Ubuntu help system provides information about how to use the Ubuntu operating system. To access the

help system from the Unity, move your pointer to the Launch bar, and then click the Help icon. If you cannot

find the Help icon from the Launch bar, click the Search icon, and type Help to search it.

To learn more about the Ubuntu operating system, go to:

https://www.ubuntu.com

Getting support information

If you need help, service, technical assistance, or more information about the Ubuntu operating system or

other applications, contact the provider of the Ubuntu operating system or the provider of the application. If

you need the service and support for hardware components shipped with your computer, contact Lenovo.

For more information about how to contact Lenovo, refer to the User Guide and Safety, Warranty, and Setup

Guide.

To access the latest User Guide and Safety, Warranty, and Setup Guide, go to:

https://support.lenovo.com

Note: For information about configuring RAID in the Linux® environment, contact your Linux software

provider.

198 P520c Hardware Maintenance Manual

Appendix C. Regulatory and TCO Certified information of

countries and regions

The latest compliance information is available at:

https://www.lenovo.com/compliance

Export classification notice

This product is subject to the United States Export Administration Regulations (EAR) and has an Export

Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the embargoed

countries in the EAR E1 country list.

Electronic emissions notices

Federal Communications Commission Declaration of Conformity

The following information refers to Lenovo personal computer machine types 30BY, 30BX, and 30C0.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses, and can radiate radio frequency

energy and, if not installed and used in accordance with the instructions, may cause harmful interference to

radio communications. However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or television reception, which can be

determined by turning the equipment off and on, the user is encouraged to try to correct the interference by

one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult an authorized dealer or service representative for help.

Lenovo is not responsible for any radio or television interference caused by using other than specified or

recommended cables and connectors or by unauthorized changes or modifications to this equipment.

Unauthorized changes or modifications could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)

this device may not cause harmful interference, and (2) this device must accept any interference received,

including interference that may cause undesired operation.

Responsible Party:

Lenovo (United States) Incorporated

1009 Think Place - Building One

Morrisville, NC 27560

Phone Number: 919-294-5900

Industry Canada Class B emission compliance statement

CAN ICES-3(B)/NMB-3(B)

European Union conformity

EU contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia

EMC Directive Statement: This product is in conformity with the protection requirements of EU Council

EMC Directive 2014/30/EU on the approximation of the laws of the Member States relating to

electromagnetic compatibility.

This product has been tested and found to comply with the limits for Class B equipment according to

European Standards harmonized in the Directives in compliance. The Class B requirements for equipment

are intended to offer adequate protection to broadcast services within residential environments.

Radio Equipment Directive Statement: This product is in conformity with all the requirements and essential

norms that apply to EU Council Radio Equipment Directive 2014/53/EU on the approximation of the laws of

the Member States relating to radio equipment. The full text of the system EU declaration of conformity and

the EU wireless module declarations are available at following Internet addresses: http://www.lenovo.com/eu-

doc-workstations

Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a

non-recommended modification of the product, including the installation of option cards from other

manufacturers.

German Class B compliance statement

Deutschsprachiger EU Hinweis:

Hinweis für Geräte der Klasse B EU-Richtlinie zur Elektromagnetischen Verträglichkeit

Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2014/30/EU zur Angleichung der

Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-Mitgliedsstaaten und hält die

Grenzwerte der Klasse B der Norm gemäß Richtlinie.

Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu

betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden. Lenovo

übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne

Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne

Empfehlung der Lenovo gesteckt/eingebaut werden.

Deutschland:

Einhaltung des Gesetzes über die elektromagnetische Verträglichkeit von Betriebsmitteln

Dieses Produkt entspricht dem „Gesetz über die elektromagnetische Verträglichkeit von Betriebsmitteln“

EMVG (früher „Gesetz über die elektromagnetische Verträglichkeit von Geräten“). Dies ist die Umsetzung der

EMV EU-Richtlinie 2014/30/EU in der Bundesrepublik Deutschland.

Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit von

Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische Verträglichkeit von

Geräten), bzw. der EMV EU Richtlinie 2014/30/EU, für Geräte der Klasse B.

Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen -

CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo

(Deutschland) GmbH, Meitnerstr. 9, D-70563 Stuttgart.

200 P520c Hardware Maintenance Manual

Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4:

Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55032 Klasse B.

Korean wireless-radio compliance information

Japan VCCI Class B compliance statement

Japan compliance statement for products which connect to the power mains with rated current less

than or equal to 20 A per phase

Japan notice for ac power cord

The ac power cord shipped with your product can be used only for this specific product. Do not use the ac

power cord for other devices.

Lenovo product service information for Taiwan

Keyboard and mouse compliance statement for Taiwan

Eurasian compliance mark

Brazil audio notice

Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.

Mexico wireless-radio compliance information

Advertencia: En Mexico la operación de este equipo estásujeta a las siguientes dos condiciones: (1) es

posible que este equipo o dispositivo no cause interferencia perjudicial y (2) este equipo o dispositivo debe

aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada.

Appendix C. Regulatory and TCO Certified information of countries and regions 201

Additional regulatory information

For additional regulatory information, refer to the Regulatory Notice shipped with your computer. Depending

on the configuration of your computer and the country or region where the computer was purchased, you

might have received additional printed regulatory notices. All regulatory notices are available on the Lenovo

Support Web site in electronic format. To access electronic copies of the documentation, go to https://

support.lenovo.com.

202 P520c Hardware Maintenance Manual

Appendix D. WEEE and recycling information of countries and

regions

Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their equipment

when it is no longer needed. Lenovo offers various programs and services to assist equipment owners in

recycling their IT products. The latest environmental information is available at:

https://www.lenovo.com/ecodeclaration

Important WEEE information

The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for

example, the European WEEE Directive, India E-Waste Management Rules). Appliances are labeled in

accordance with local regulations concerning waste electrical and electronic equipment (WEEE). These

regulations determine the framework for the return and recycling of used appliances as applicable within

each geography. This label is applied to various products to indicate that the product is not to be thrown

away, but rather put in the established collection systems for reclaiming these end of life products.

Users of electrical and electronic equipment (EEE) with the WEEE marking must not dispose of end of life

EEE as unsorted municipal waste, but use the collection framework available to them for the return, recycle,

and recovery of WEEE and to minimize any potential effects of EEE on the environment and human health

due to the presence of hazardous substances. Lenovo electrical and electronic equipment (EEE) may contain

parts and components, which at end-of-life might qualify as hazardous waste.

EEE and waste electrical and electronic equipment (WEEE) can be delivered free of charge to the place of

sale or any distributor that sells electrical and electronic equipment of the same nature and function as the

used EEE or WEEE.

For additional WEEE information, go to:

https://www.lenovo.com/recycling

WEEE information for Hungary

Lenovo, as a producer, bears the cost incurred in connection with the fulfillment of Lenovo’s obligations

under Hungary Law No. 197/2014 (VIII.1.) subsections (1)-(5) of section 12.

Recycling information for Japan

Collecting and recycling a disused Lenovo computer or monitor

If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property of

the company, you must do so in accordance with the Law for Promotion of Effective Utilization of Resources.

Computers and monitors are categorized as industrial waste and should be properly disposed of by an

industrial waste disposal contractor certified by a local government. In accordance with the Law for

Promotion of Effective Utilization of Resources, Lenovo Japan provides, through its PC Collecting and

Recycling Services, for the collecting, reuse, and recycling of disused computers and monitors. For details,

visit the Lenovo Web site at https://www.lenovo.com/recycling/japan. Pursuant to the Law for Promotion of

Effective Utilization of Resources, the collecting and recycling of home-used computers and monitors by the

manufacturer was begun on October 1, 2003. This service is provided free of charge for home-used

computers sold after October 1, 2003. For details, visit the Lenovo Web site at https://www.lenovo.com/

recycling/japan.

Disposing of Lenovo computer components

Some Lenovo computer products sold in Japan may have components that contain heavy metals or other

environmental sensitive substances. To properly dispose of disused components, such as a printed circuit

board or drive, use the methods described above for collecting and recycling a disused computer or monitor.

Disposing of disused lithium batteries from Lenovo computers

A button-shaped lithium battery is installed inside your Lenovo computer to provide power to the computer

clock while the computer is off or disconnected from the main power source. If you need to replace it with a

new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused

lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal

operator, and follow their instructions. Disposal of a lithium battery must comply with local ordinances and

regulations.

Recycling information for Brazil

Declarações de Reciclagem no Brasil

Descarte de um Produto Lenovo Fora de Uso

Equipamentos elétricos e eletrônicos não devem ser descartados em lixo comum, mas enviados à pontos de

coleta, autorizados pelo fabricante do produto para que sejam encaminhados e processados por empresas

especializadas no manuseio de resíduos industriais, devidamente certificadas pelos orgãos ambientais, de

acordo com a legislação local.

A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você possua um

produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-mail para:

reciclar@lenovo.com, informando o modelo, número de série e cidade, a fim de enviarmos as instruções

para o correto descarte do seu produto Lenovo.

Battery recycling information for Taiwan

204 P520c Hardware Maintenance Manual

Battery recycling information for the European Union

Notice: This mark applies only to countries within the European Union (EU).

Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC

concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the

framework for the return and recycling of used batteries and accumulators as applicable throughout the

European Union. This label is applied to various batteries to indicate that the battery is not to be thrown

away, but rather reclaimed upon end of life per this Directive.

In accordance with the European Directive 2006/66/EC, batteries and accumulators are labeled to indicate

that they are to be collected separately and recycled at end of life. The label on the battery may also include

a chemical symbol for the metal concerned in the battery (Pb for lead, Hg for mercury, and Cd for cadmium).

Users of batteries and accumulators must not dispose of batteries and accumulators as unsorted municipal

waste, but use the collection framework available to customers for the return, recycling, and treatment of

batteries and accumulators. Customer participation is important to minimize any potential effects of batteries

and accumulators on the environment and human health due to the potential presence of hazardous

substances.

Before placing electrical and electronic equipment (EEE) in the waste collection stream or in waste collection

facilities, the end user of equipment containing batteries and/or accumulators must remove those batteries

and accumulators for separate collection.

Disposing of lithium batteries and battery packs from Lenovo products

A coin-cell type lithium battery might be installed inside your Lenovo product. You can find details about the

battery in the product documentation. If the battery needs to be replaced, contact your place of purchase or

contact Lenovo for service. If you need to dispose of a lithium battery, insulate it with vinyl tape, contact your

place of purchase or a waste-disposal operator, and follow their instructions.

Disposing of battery packs from Lenovo products

Your Lenovo device might contain a lithium-ion battery pack or a nickel metal hydride battery pack. You can

find details on the battery pack in the product documentation. If you need to dispose of a battery pack,

insulate it with vinyl tape, contact Lenovo sales, service, or your place of purchase, or a waste-disposal

operator, and follow their instructions. You also can refer to the instructions provided in the user guide for

your product.

For proper collection and treatment, go to:

https://www.lenovo.com/environment

Appendix D. WEEE and recycling information of countries and regions 205

206 P520c Hardware Maintenance Manual

Appendix E. Restriction of Hazardous Substances (RoHS)

Directive of countries and regions

The latest environmental information about Lenovo products is available at:

https://www.lenovo.com/ecodeclaration

European Union RoHS

This Lenovo product, with included parts (cables, cords, and so on) meets the requirements of Directive

2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic

equipment ("RoHS recast" or "RoHS 2").

For more information about Lenovo worldwide compliance on RoHS, go to:

https://www.lenovo.com/rohs-communication

Turkish RoHS

The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use

of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE).

Ukraine RoHS

India RoHS

RoHS compliant as per E-Waste (Management) Rules.

Mainland China RoHS

Taiwan RoHS

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Appendix F. ENERGY STAR model information

ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of

Energy aimed at saving money and protecting the environment through energy efficient products and

practices.

Lenovo is proud to offer our customers products with an ENERGY STAR compliant designation. Some

models of the following machine types have been designed and tested to conform to the ENERGY STAR

program requirement for computers at the time of manufacture: 30BX0009US and 30BX0008US. For more

information about ENERGY STAR ratings for Lenovo computers, go to:

http://www.lenovo.com

By using ENERGY STAR compliant products and taking advantage of the power-management features of

your computer, you reduce the consumption of electricity. Reduced electrical consumption contributes to

potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions.

For more information about ENERGY STAR, go to:

http://www.energystar.gov

Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To

help in this endeavor, set the following power-management features to take effect when your computer has

been inactive for a specified duration:

Table 2. ENERGY STAR power-management features

Windows 10 operating system

Power plan: Default

• Turn off the display: After 10 minutes

• Put the computer to sleep: After 25 minutes

• Advanced power settings:

– Turn off hard disk drives: After 20 minutes

– Hibernate: Never

To awaken your computer from a Sleep mode, press any key on your keyboard.

To change power settings, do the following:

1. Click the Start button to open the Start menu.

2. Click Windows System ➙ Control Panel.

3. View Control Panel by Large icons or Small icons, and then click Power Options.

4. Follow the instructions on the screen.

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Appendix G. Notices

Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult

your local Lenovo representative for information on the products and services currently available in your

area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that

Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service

that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's

responsibility to evaluate and verify the operation of any other product, program, or service.

Lenovo may have patents or pending patent applications covering subject matter described in this

document. The furnishing of this document does not give you any license to these patents. You can send

license inquiries, in writing, to:

Lenovo (United States), Inc.

8001 Development Drive

Morrisville, NC 27560

U.S.A.

Attention: Lenovo Director of Licensing

LENOVO PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS

OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow

disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to

you.

This information could include technical inaccuracies or typographical errors. Changes are periodically made

to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may

make improvements and/or changes in the products and/or the programs described in this publication at any

time without notice.

The products described in this document are not intended for use in implantation or other life support

applications where malfunction may result in injury or death to persons. The information contained in this

document does not affect or change Lenovo product specifications or warranties. Nothing in this document

shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or

third parties. All information contained in this document was obtained in specific environments and is

presented as an illustration. The result obtained in other operating environments may vary.

Lenovo may use or distribute any of the information you supply in any way it believes appropriate without

incurring any obligation to you.

Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in

any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the

materials for this Lenovo product, and use of those Web sites is at your own risk.

Any performance data contained herein was determined in a controlled environment. Therefore, the result

obtained in other operating environments may vary significantly. Some measurements may have been made

on development-level systems and there is no guarantee that these measurements will be the same on

generally available systems. Furthermore, some measurements may have been estimated through

extrapolation. Actual results may vary. Users of this document should verify the applicable data for their

specific environment.

212 P520c Hardware Maintenance Manual

Appendix H. Trademarks

LENOVO, LENOVO logo, THINKSTATION, and THINKSTATION logo are trademarks of Lenovo.

Microsoft, Windows, and Windows Media are trademarks of the Microsoft group of companies.

Intel, Thunderbolt, and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries.

Linux is a registered trademark of Linus Torvalds.

DisplayPort and Mini DisplayPort are trademarks of the Video Electronics Standards Association.

Ubuntu is a registered trademark of Canonical Ltd.

214 P520c Hardware Maintenance Manual

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