About this manual
Chapter 1. Safety information
Chapter 2. Important service information
- Strategy for replacing FRUs
- Strategy for replacing FRUs for CTO, special-bid, and standard models
  - Product definition
  - FRU identification
Chapter 3. General checkout
Chapter 4. Related service information
Chapter 5. Configuring RAID
- Storage drive requirements for RAID levels
- Configuring RAID with the Intel RST configuration utility
Chapter 6. Using the special keys
Chapter 7. Locations
Chapter 8. FRU replacement notices
Chapter 9. Removing or replacing a FRU
Appendix A. Notices

Lenovo T15g User Manual

Displayed below is the user manual for T15g by Lenovo which is a product in the Notebooks category. This manual has pages.

Related Manuals

Lenovo T15g Manual

P15 Gen 2, T15g Gen 2, and P17 Gen 2

Hardware Maintenance Manual

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

under Appendix A “Notices” on page 135.

First Edition (June 2021)

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 . . . . . . . . . . . . iii

Chapter 1. Safety information . . . . . . 1

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

Electrical safety . . . . . . . . . . . . . . . . 1

Safety inspection guide . . . . . . . . . . . . . 2

Handling devices that are sensitive to electrostatic

discharge . . . . . . . . . . . . . . . . . . 3

Grounding requirements . . . . . . . . . . . . 4

Safety notices (multilingual translations) . . . . . . 4

Chapter 2. Important service

information . . . . . . . . . . . . . . . 21

Strategy for replacing FRUs . . . . . . . . . . 21

Strategy for replacing a solid-state drive . . . 21

Important notice for replacing a system

board . . . . . . . . . . . . . . . . . 22

How to use error message . . . . . . . . . 22

Strategy for replacing FRUs for CTO, special-bid,

and standard models. . . . . . . . . . . . . 22

Product definition . . . . . . . . . . . . 22

FRU identification . . . . . . . . . . . . 22

Chapter 3. General checkout . . . . . 23

What to do first . . . . . . . . . . . . . . . 23

Checkout guide . . . . . . . . . . . . . . . 24

Diagnosing problems . . . . . . . . . . . 24

Quick test programs . . . . . . . . . . . 25

UEFI diagnostic program . . . . . . . . . 25

Bootable diagnostic programs . . . . . . . 26

Power system checkout . . . . . . . . . . . 26

Checking the ac power adapter . . . . . . . 27

Checking the built-in battery and operational

charging . . . . . . . . . . . . . . . . 27

Checking the coin-cell battery . . . . . . . 28

Chapter 4. Related service

information . . . . . . . . . . . . . . . 29

Recovery overview for the Windows 10 operating

system . . . . . . . . . . . . . . . . . . 29

Resetting your computer . . . . . . . . . 29

Using advanced startup options . . . . . . 29

Recovering your operating system if Windows

10 fails to start . . . . . . . . . . . . . 30

Creating and using a recovery USB drive . . . 30

Passwords. . . . . . . . . . . . . . . . . 30

Power-on password . . . . . . . . . . . 31

Storage password . . . . . . . . . . . . 31

Supervisor password . . . . . . . . . . . 31

System management password. . . . . . . 31

How to remove the power-on password . . . 32

How to remove the storage password . . . . 32

How to remove the system management

password . . . . . . . . . . . . . . . 33

Power management . . . . . . . . . . . . . 34

Sleep mode . . . . . . . . . . . . . . 34

Hibernation mode . . . . . . . . . . . . 34

Symptom-to-FRU index . . . . . . . . . . . 34

Numeric error codes . . . . . . . . . . . 35

Error messages . . . . . . . . . . . . . 36

Beep errors. . . . . . . . . . . . . . . 37

No-beep symptoms . . . . . . . . . . . 39

LCD-related symptoms . . . . . . . . . . 39

Intermittent problems . . . . . . . . . . . 40

Undetermined problems . . . . . . . . . 40

Chapter 5. Configuring RAID . . . . . 41

Storage drive requirements for RAID levels . . . . 41

Configuring RAID with the Intel RST configuration

utility . . . . . . . . . . . . . . . . . . . 42

Entering the Intel RST configuration utility . . . 42

Creating RAID volumes . . . . . . . . . . 42

Deleting RAID volumes . . . . . . . . . . 43

Resetting storage drives to non-RAID . . . . 43

Rebuilding RAID 1 volumes . . . . . . . . 44

Chapter 6. Using the special keys. . . 45

Chapter 7. Locations . . . . . . . . . 47

Locating computer controls, connectors, and

indicators . . . . . . . . . . . . . . . . . 47

Front view . . . . . . . . . . . . . . . 47

Bottom view . . . . . . . . . . . . . . 50

Side view . . . . . . . . . . . . . . . 51

Rear view . . . . . . . . . . . . . . . 52

Locating FRUs and CRUs . . . . . . . . . . . 52

Major FRUs . . . . . . . . . . . . . . 53

LCD FRUs . . . . . . . . . . . . . . . 59

Miscellaneous parts . . . . . . . . . . . 63

Connector and cable guide . . . . . . . . 65

Looking up FRU information . . . . . . . . . . 67

Chapter 8. FRU replacement

notices . . . . . . . . . . . . . . . . . 69

Service tool kit . . . . . . . . . . . . . . . 69

Screw notices . . . . . . . . . . . . . . . 69

Retaining serial numbers . . . . . . . . . . . 70

Restoring the serial number of the system

unit . . . . . . . . . . . . . . . . . . 70

Retaining the UUID. . . . . . . . . . . . 71

Reading or writing the ECA information . . . . 72

Chapter 9. Removing or replacing a

FRU. . . . . . . . . . . . . . . . . . . 73

General guidelines . . . . . . . . . . . . . . 73

Before servicing the computer . . . . . . . . . 74

Disabling the built-in battery . . . . . . . . . . 74

Removing the nano-SIM card . . . . . . . . . 74

Removing a major FRU . . . . . . . . . . . . 74

1010 Bottom door . . . . . . . . . . . . 75

1020 M.2 solid-state drive . . . . . . . . . 75

1030 Memory module under the bottom

cover . . . . . . . . . . . . . . . . . 76

1040 Keyboard and keyboard sub board . . . 78

1050 Memory module bracket . . . . . . . 80

1060 M.2 solid-state drive under the

keyboard . . . . . . . . . . . . . . . 82

1070 Memory module under the keyboard . . 83

1080 Wireless LAN card (for P15 Gen 2 and

T15g Gen 2) . . . . . . . . . . . . . . 85

1090 Wireless WAN card . . . . . . . . . 86

1100 Keyboard bezel assembly . . . . . . . 86

1110 Power button board with cable . . . . . 89

1120 Fingerprint reader cable, bracket and

board . . . . . . . . . . . . . . . . . 90

1120 Wireless LAN card (for P17 Gen 2) . . . 91

1130 Speaker assembly . . . . . . . . . . 92

1140 Smart card reader and smart card reader

cable . . . . . . . . . . . . . . . . . 92

1150 MIMO wireless-WAN antenna assembly

with cable (for P15/T15g Gen 2). . . . . . . 94

1150 MIMO wireless-WAN antenna assembly

with cable(for P17 Gen 2) . . . . . . . . . 95

1160 Base cover assembly . . . . . . . . 95

1170 Built-in battery . . . . . . . . . . . 98

1180 Coin-cell battery . . . . . . . . . . 99

1190 Trackpad and trackpad cable . . . . . 99

1200 Hinge caps . . . . . . . . . . . . 101

1210 LCD unit . . . . . . . . . . . . . 101

1220 Thermal fan assembly . . . . . . . . 103

1230 GPU board . . . . . . . . . . . . 104

1240 System board . . . . . . . . . . . 105

1250 dc-in bracket and dc-in cable

assembly . . . . . . . . . . . . . . . 107

1260 I/O board and I/O board cable . . . . . 108

1270 Chassis assembly . . . . . . . . . . 109

Remove an LCD FRU for non-touch models (for

P15/T15g Gen 2) . . . . . . . . . . . . . . 109

2010 LCD bezel assembly . . . . . . . . . 109

2020 LCD panel and LCD cable . . . . . . . 110

2030 Hinge assembly. . . . . . . . . . . 112

2040 Camera/microphone module . . . . . 112

2050 Antenna kit . . . . . . . . . . . . 114

2060 LCD rear cover assembly . . . . . . . 116

Removing an LCD FRU for touch models (for P15/

T15g Gen 2) . . . . . . . . . . . . . . . . 116

3010 LCD strip bezel . . . . . . . . . . . 116

3020 LCD panel assembly, LCD cable, and

hinge assembly . . . . . . . . . . . . . 117

3030 Hinge assembly. . . . . . . . . . . 121

3040 Camera/microphone module . . . . . 121

3050 Antenna kit . . . . . . . . . . . . 123

3060 LCD rear cover assembly . . . . . . . 124

Removing an LCD FRU (for P17 Gen 2). . . . . . 124

4010 LCD strip cover and LCD bezel

assembly . . . . . . . . . . . . . . . 124

4020 LCD panel and LCD cable . . . . . . . 125

4030 LCD hinge assembly . . . . . . . . . 128

4040 Camera and LED camera cable

assembly . . . . . . . . . . . . . . . 130

4050 Camera bracket. . . . . . . . . . . 131

4060 Antenna kit . . . . . . . . . . . . 132

4070 LCD rear cover assembly . . . . . . . 133

Appendix A. Notices . . . . . . . . . . 135

ii P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

About this manual

This manual contains service and reference information for the following ThinkPad® products.

ThinkPad P15 Gen 2 Machine Types (MT) 20YQ and 20YR

ThinkPad T15g Gen 2 Machine Types (MT) 20YS and 20YT

ThinkPad P17 Gen 2 Machine Types (MT) 20YU and 20YV

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 ThinkPad

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

Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information”

on page 1

Depending on the model, some hardware configuration and software programs might not be available on the

computer. Some statements in this manual might not be applicable to the computer.

iv P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 1. Safety information

This chapter presents following safety information that you need to be familiar with before you service a

ThinkPad notebook computer.

• “General safety” on page 1

• “Electrical safety” on page 1

• “Safety inspection guide” on page 2

• “Handling devices that are sensitive to electrostatic discharge” on page 3

• “Grounding requirements” on page 4

• “Safety notices (multilingual translations)” on page 4

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. Make sure that 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. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you

think is 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, make sure that other service technicians 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 toolcase 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. Make sure 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, about 8

centimeters (3 inches) from the end.

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

Attention: 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.

• Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan

louvers or cover them with labels or stickers.

Electrical safety

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 main units

• 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.

Attention: 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.

Attention: An electrical shock can occur only when there is a complete circuit. By observing the above

rule, you may prevent a current from passing through your body.

– When using testers, 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; Instructions for these

precautions 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

– Similar units to listed above

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 purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each

machine was designed and built, required safety items were installed to protect users and service

technicians from injury. This guide addresses only those items. You should use good judgment to identify

potential safety hazards due to attachment of non-ThinkPad 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.

2P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Consider these conditions and the safety hazards they present:

• 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 a bulging capacitor

• Mechanical hazards, such as loose or missing hardware

To determine whether there are any potentially unsafe conditions, use the following checklist at the

beginning of every service task. 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 the frame ground.

b. The power cord should be the authorized type specified for your computer. Go to: https://

support.lenovo.com/partslookup

c. Insulation must not be frayed or worn.

4. Check for cracked or bulging batteries.

5. Remove the cover.

6. Check for any obvious non-ThinkPad alterations. Use good judgment as to the safety of any non-

ThinkPad alterations.

7. 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.

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

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

with.

Handling devices that are sensitive to electrostatic discharge

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.

• 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 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 to guard against ESD damage is desirable but not necessary.

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

Chapter 1.Safety information 3

– When working on a double-insulated or battery-operated system, use an ESD common ground or

reference point. 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 (multilingual translations)

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

• English

• Arabic

• Brazilian Portuguese

• French

• German

• Hebrew

• Japanese

• Korean

• Spanish

• Traditional Chinese

DANGER

4P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

DANGER

Chapter 1.Safety information 5

6P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

PERIGO

Chapter 1.Safety information 7

PERIGO

8P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

PERIGO

DANGER

Chapter 1.Safety information 9

DANGER

VORSICHT

10 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

VORSICHT

Chapter 1.Safety information 11

VORSICHT

12 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 1.Safety information 13

14 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 1.Safety information 15

16 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 1.Safety information 17

18 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 1.Safety information 19

20 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 2. Important service information

This chapter introduces following important service information that applies to all machine types supported

by this manual:

• “Strategy for replacing FRUs” on page 21

– “Strategy for replacing a solid-state drive” on page 21

– “Important notice for replacing a system board” on page 22

– “How to use error message” on page 22

• “Strategy for replacing FRUs for CTO, special-bid, and standard models” on page 22

– “Product definition” on page 22

– “FRU identification” on page 22

Important:

• Advise customers to contact the Lenovo® Customer Support Center if they need any assistance in

obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers for

Lenovo Support are available at: https://pcsupport.lenovo.com/supportphonelist

• System Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo

authorized service technicians are available in the following support site:

https://www.lenovoservicetraining.com/ion/

Strategy for replacing FRUs

Before replacing parts:

Ensure that all software fixes, drivers, and UEFI BIOS downloads are installed before replacing any FRUs

listed in this manual.

After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before

completing the service action.

To download software fixes, drivers, and UEFI BIOS, go to https://support.lenovo.com and follow the

instructions on the screen.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

• If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the

original FRU before you continue.

• Some computers have both a processor board and a system board. If you are instructed to replace either

the processor board or the system board, and replacing one of them does not correct the problem,

reinstall that board, and then replace the other one.

• If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error.

Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.

Replace only the FRU that changed the symptoms.

Strategy for replacing a solid-state drive

Always try to run a low-level format before replacing a solid-state drive. This will cause all customer data on

the drive to be lost. Be sure that the customer has a current backup of the data before doing this task.

Attention: The drive startup sequence in the computer you are servicing may have been changed. Be

extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect

drive, data or programs can be overwritten.

Important notice for replacing a system board

Some components mounted on a system board are very sensitive. Improper handling of a system board can

cause damage to those components, and may cause a system malfunction.

Attention: When handling a system board:

• Do not drop a system board or apply any excessive force to it.

• Avoid rough handling of any kind.

• Avoid bending a system board and hard pushing to prevent cracking at each BGA (Ball Grid Array)

chipset.

How to use error message

Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed,

begin the diagnosis with the first error code. Whatever causes the first error code may also cause false error

codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU Index

for the computer you are servicing.

Strategy for replacing FRUs for CTO, special-bid, and standard models

This topic provides information about the model types and FRU identification.

Product definition

This topic introduces different model types and how to identify each type.

Dynamic Configure To Order (CTO) model

This model provides the ability for a customer to configure a Lenovo solution from a Web Site, and have this

configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and

eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.

The model is “CTO1” and the default country code is “WW” (example: 20AACTO1WW).

Special-bid model

This is a unique configuration that has been negotiated between Lenovo and the customer. A unique MTM

consists of a 4-character MT, a 4-character model, and a numeric 2-character country code is provided to

the customer to place orders (example: 20AA000955). The country code assigned is numeric and does not

designate a specific country or region. The custom model factsheet for the MTM indicates which country the

special bid MTM is set up for. Special-bid offering is not generally announced.

Standard model

Standard models (fixed configuration) are announced and offered to all customers. The MTM portion of the

machine label consists of a 4-character MT, a 4-character model, and an alphabetic 2-character country

code. The country code assigned is alphabetic and represents a designated country or region (example:

20AA0009UK).

FRU identification

To identify FRUs for a product, do the following:

1. Go to https://support.lenovo.com/partslookup.

2. Type the Machine Type in the corresponding field to get a general FRU list. Or type the Serial Number for

more detailed FRU information.

22 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 3. General checkout

This chapter introduces following information:

• “What to do first” on page 23

• “Checkout guide” on page 24

– “Diagnosing problems” on page 24

– “Quick test programs” on page 25

– “UEFI diagnostic program” on page 25

– “Bootable diagnostic programs” on page 26

• “Power system checkout” on page 26

Before you go to the checkout guide, be sure to read the following important notes.

Important notes:

• Only certified trained personnel should service the computer.

• Before replacing any FRU, read the entire page on removing and replacing FRUs.

• When you replace FRUs, it is recommended use new nylon-coated screws.

• Be extremely careful during such write operations as copying, saving, or formatting. The sequence

of the drives in the computer that you are servicing might have been altered. If you select an incorrect

drive, data or programs might be overwritten.

• Replace a FRU only with another FRU of the correct model. When you replace a FRU, ensure that the

model of the machine and the FRU part number are correct by referring to the web site: https://

support.lenovo.com/partslookup

• A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur

for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation,

electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs. If you

suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do

not replace the FRU.

• Be careful not to replace a nondefective FRU.

What to do first

When you return a FRU, you must include the following information in the parts exchange form or parts return

form that you attach to it:

1. Name and phone number of service technician

2. Date of service

3. Date on which the machine failed

4. Date of purchase

5. Failure symptoms, error codes appearing on the display, and beep symptoms

6. Procedure index and page number in which the failing FRU was detected

7. Failing FRU name and part number

8. Machine type, model number, and serial number

9. Customer's name and address

Note: During the warranty period, the customer may be responsible for repair costs if the computer damage

was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper

maintenance by the customer. Following is a list of some common items that are not covered under warranty

and some symptoms that might indicate that the system was subjected to stress beyond normal use.

Before checking problems with the computer, determine whether the damage is covered under the warranty

by referring to the following list:

The following are not covered under warranty:

• LCD panel cracked from the application of excessive force or from being dropped

• Scratched (cosmetic) parts

• Distortion, deformation, or discoloration of the cosmetic parts

• Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force

• Damage caused by liquid spilled into the system

• Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an

incompatible card

• Improper disc insertion or use of an optical drive

• Fuses blown by attachment of a nonsupported device

• Forgotten computer password (making the computer unusable)

• Sticky keys caused by spilling a liquid onto the keyboard

• Use of an incorrect ac power adapter on laptop products

The following symptoms might indicate damage caused by nonwarranted activities:

• Missing parts might be a symptom of unauthorized service or modification.

• Check for obvious damage to a storage. If the spindle of a storage becomes noisy, the storage might have

been dropped or subject to excessive force.

Checkout guide

Use the following procedures as a guide in identifying and correcting problems with the ThinkPad notebook

computers.

Note: The diagnostic tests are intended to test only ThinkPad products. The use of non-ThinkPad products,

prototype cards, or modified options can lead to false indications of errors and invalid system responses.

1. Identify the failing symptoms in as much detail as possible.

2. Verify the symptoms. Try to re-create the failure by running the diagnostic test or by repeating the

operation.

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,

that come with the operating system or program.

Lenovo Vantage is preinstalled on your computer. It 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.

Note: If you are unable to isolate and repair the problem yourself after running the program, save and print

the log files created by the program. You need the log files when you speak to a Lenovo technical support

representative.

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

For additional information, see the help system of the program.

24 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Quick test programs

Run quick test programs to troubleshoot and resolve computer problems, especially when the computer

does not have the Lenovo Vantage installed.

To download and install a quick test program, go to https://www.lenovo.com/diags, and follow the instructions

on the Web site.

To run a test using quick test program, do the following:

1. Go to the C:\SWTOOLS\ldiag directory.

2. Double-click the lsc_lite.exe file.

3. When the User Account Control window opens, click Yes.

4. Select the device class to be tested.

5. Select the devices to be tested.

6. Select the test to be performed.

7. Follow the instructions on the screen to start the test. When a problem is detected, information

messages are displayed. Refer to the messages to troubleshoot the problem.

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 “Power system checkout” on page 26,

and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on page 34

for error code descriptions and troubleshooting hints.

2. When the logo screen is displayed, repeatedly press and release the F10 key. The main screen of the

UEFI diagnostic program is displayed.

3. Follow the instructions on the screen to use the diagnostic program.

The following table displays the main items of the UEFI diagnostic program. Depending on the model, the

items might differ slightly.

Table 1. Items on the main screen of the UEFI diagnostic program

Tests Tools

• Memory quick test

• Memory extended test

• Memory bit fade test (180 min)

• Quick storage device test

• LCD test

• PCI-e test

• Motherboard buses test

• Exit application

• System information

• Generate configuration file

• Execute from configuration file

• Recover bad sectors tool

Note: The recover bad sectors tool is only available on computers that have storage installed.

Chapter 3.General checkout 25

Bootable diagnostic programs

If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a

bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable

you to test computer memory and internal storage devices, view system information, and check and recover

the internal storage devices. To use the bootable diagnostic programs, you can create a bootable diagnostic

medium on a USB device or disc.

To create a bootable diagnostic medium, do the following:

1. Go to https://www.lenovo.com/diags.

2. Click Lenovo Bootable Diagnostics.

3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or disc.

To use the diagnostic medium you have created, do one of the following:

• If you have created the bootable diagnostic medium on a USB device, do the following:

1. Attach the USB device to the computer.

2. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page

26, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on

page 34 for error code descriptions and troubleshooting hints.

3. When the logo screen is displayed, repeatedly press and release the F12 key. When the Boot Menu

window opens, release the F12 key.

4. Use the arrow keys to select USB HDD and then press Enter. The diagnostic program will be

launched automatically.

5. Follow the instructions on the screen to use the diagnostic program.

• If you have created the bootable diagnostic medium on a CD, do the following:

1. Turn on the computer. If the computer cannot be turned on, go to “Power system checkout” on page

26, and check the power sources. If an error code is displayed, go to “Symptom-to-FRU index” on

page 34 for error code descriptions and troubleshooting hints.

2. Insert the disc into the optical drive.

3. Restart the computer.

4. When the logo screen is displayed, repeatedly press and release the F12 key. When the Boot Menu

window opens, release the F12 key.

5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program will

be launched automatically.

6. Follow the instructions on the screen to use the diagnostic program.

Power system checkout

To verify if a battery or an ac power adapter is functional, do the following:

1. Turn off the computer.

2. Connect the ac power adapter.

3. Turn on the computer. If the computer can be turned on, it means that either the battery or the ac power

adapter is functional.

4. Insert a straightened paper clip into the emergency-reset hole to reset the computer. If the computer is

still powered on, it means that the ac power adapter is functional.

5. Turn off the computer.

6. Disconnect the ac power adapter and turn on the computer. If the computer can be turned on, it means

that the battery is functional.

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

• “Checking the ac power adapter” on page 27

26 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

• “Checking the built-in battery and operational charging” on page 27

• “Checking the coin-cell battery” on page 28

Checking the ac power adapter

To check the ac power adapter, do the following:

1. Unplug the ac power adapter cable from the computer.

2. Measure the output voltage at the plug of the ac power adapter cable. See the following illustration:

(20V)

Pin Voltage (V dc)

1 +20

2 0

3Ground

Note: Output voltage of pin 2 of the ac power adapter might differ from the one you are servicing.

3. If the voltage is not correct, replace the ac power adapter.

4. If the voltage is acceptable, replace the system board.

Note: Noise from the ac power adapter does not always indicate a defect.

If the computer does not charge during operation, go to “Checking the built-in battery and operational

charging” on page 27.

Checking the built-in battery and operational charging

This computer supports only batteries specially designed for this specific system and manufactured by

Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed

for other systems. If an unauthorized battery or a battery designed for another systems is installed, the

system will not charge.

Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and

provides no warranties for failures or damage arising out of their use.

Move your pointer to the battery-status icon in the Windows notification area to check the battery status. The

battery-status icon displays the percentage of battery power remaining and how long you can use your

computer before you must charge the battery.

To check whether the battery charges properly during operation, do the following:

1. Discharge the battery until the remained battery power is less than 50%.

2. Connect the computer to ac power to charge the battery. If the battery status icon in the Windows

notification area indicates that the battery is not charging, remove the battery and let it return to room

temperature.

Note: The built-in battery is NOT customer replaceable. Contact a qualified Lenovo technician to

replace the battery.

3. Reinstall the battery. If the battery is still not charging, replace the battery.

4. Check the battery status icon again. If the same error still exists, replace the system board.

Chapter 3.General checkout 27

Checking the coin-cell battery

To check the coin-cell battery, do the following:

1. Remove the coin-cell battery. See “1180 Coin-cell battery” on page 99.

2. Measure the voltage of the coin-cell battery. See the following illustration.

Wire Voltage (V dc)

Red +2.5 to +3.2

Black Ground

• If the voltage is correct, replace the system board.

• If the voltage is not correct, replace the coin-cell battery.

• If the coin-cell battery discharges quickly after replacement, replace the system board.

28 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 4. Related service information

This chapter presents following information:

• “Recovery overview for the Windows 10 operating system” on page 29

• “Passwords” on page 30

• “Power management” on page 34

• “Symptom-to-FRU index” on page 34

Service Web site: When the latest maintenance diskette and the system program service diskette become

available, they will be posted on https://support.lenovo.com

Recovery overview for the Windows 10 operating system

The Windows recovery programs enable you to reset your computer or use advanced startup options.

It is recommended that you create a recovery USB drive as early as possible. Store the recovery USB drive

as a backup or replacement for the Windows recovery programs.

For more information, see “Creating and using a recovery USB drive” on page 30.

Resetting your computer

If your computer does not perform well, you might consider resetting your computer. In the resetting

process, you can choose to keep your files or remove them, and then reinstall the Windows operating

system.

To reset your computer, do the following:

Note: The graphical user interface (GUI) items of the operating system might change without notice.

1. Open the Start menu and then click Settings. If Settings is not displayed, click All apps to display all

programs, and then click Settings ➙ Update & security ➙ Recovery.

2. In the Reset this PC section, click Get started.

3. Follow the instructions on the screen to reset your computer.

Using advanced startup options

With advanced startup options, you can change the firmware settings of the computer, change the startup

settings of the Windows operating system, start the computer from an external device, or restore the

Windows operating system from a system image.

To use advanced startup options, do the following:

Note: The GUI items of the operating system might change without notice.

1. Open the Start menu and then click Settings. If Settings is not displayed, click All apps to display all

programs, and then click Settings ➙ Update & security ➙ Recovery.

2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.

3. Select a desired startup option, then follow the instructions on the screen.

Recovering your operating system if Windows 10 fails to start

The Windows recovery environment on your computer is capable of operating independently from the

Windows 10 operating system. This enables you to recover or repair the operating system even if the

Windows 10 operating system fails to start.

After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then

you can choose repair and recovery options by following the instructions on the screen.

Note: Ensure that your computer is connected to ac power during the recovery process.

Creating and using a recovery USB drive

You can create a recovery USB drive as a backup for the Windows recovery programs. With the recovery

USB drive, you can troubleshoot and fix the problems even if the preinstalled Windows recovery programs

are damaged.

Creating a recovery USB drive

The USB drive that you use to create the recovery USB drive must be at least 16 GB of storage. The actual

USB capacity that is required depends on the size of the recovery image.

Attention: The creation process deletes anything stored on the USB drive. To avoid data loss, make a

backup copy of all the data that you want to keep.

To create a recovery USB drive, do the following:

Note: Ensure that your computer is connected to ac power during the following process.

1. Connect a proper USB drive (at least 16 GB of storage).

2. Type recovery in the search box on the taskbar. Then click Create a recovery drive.

3. Click Yes in the User Account Control window to allow the Recovery Media Creator program to start.

4. In the Recovery Drive window, follow the on-screen instructions to create a recovery USB drive.

Using the recovery USB drive

If you cannot start your computer, use the recovery USB drive to recover your computer.

To use a recovery USB drive, do the following:

Note: Ensure that your computer is connected to ac power.

1. Connect the recovery USB drive to the computer.

2. Turn on or restart the computer. Before the Windows operating system starts, repeatedly press the F12

key. The Boot Menu window opens.

3. Select the recovery USB drive as the boot device.

4. Select a preferred keyboard layout.

5. Click Troubleshoot to display the optional recovery solutions.

6. Select a corresponding recovery solution according to your situation. Then follow the instructions on the

screen to complete the process.

Passwords

As many as four passwords might be needed for a ThinkPad notebook computer: the power-on password,

the storage password, the supervisor password, and the system management password.

30 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

If any of these passwords has been set, a prompt for it will be displayed on the screen whenever the

computer is turned on. The computer does not start until the password is entered.

Note: If only a supervisor password is set, the password prompt will not be displayed when the operating

system is started.

Power-on password

A power-on password protects the system from being powered on by an unauthorized person. The

password must be entered before the operating system can be started. For instructions on how to remove

the power-on password, see “How to remove the power-on password” on page 32.

Storage password

There are two kinds of storage passwords:

• Single password - for the user

• Dual password - for the system administrator, who can use it to get access to the storage even if the user

has changed the user storage password

Note: There are two modes for the storage password: User only and User + Admin. The User + Admin

mode requires two storage passwords; the system administrator enters both in the same operation. The

system administrator then provides the user storage password to the system user.

Attention: Attention: If the user storage password has been forgotten, check whether an admin storage

password has been set. If an admin storage password has been set, it can be used to access the storage. If

no admin storage password is available, neither Lenovo nor Lenovo authorized service technicians provide

any services to reset either the user storage password or the admin storage password, or to recover data

from the storage. The storage device can be replaced for a scheduled fee.

For how to remove the storage password, see “How to remove the storage password” on page 32.

Supervisor password

The supervisor password protects the system information stored in the ThinkPad Setup program. It provides

the following security features:

• If only a supervisor password is set, a password prompt is displayed when you try to start the ThinkPad

Setup program. Unauthorized users cannot change most of the system configuration options in the

ThinkPad Setup program without the password.

• The system administrator can use the supervisor password to access a computer even if the user of that

computer has set a power-on password. The supervisor password overrides the power-on password.

• The system administrator can set the same supervisor password on many ThinkPad notebook computers

to make administration easier.

Attention: If the supervisor password has been forgotten and cannot be made available to the service

technician, there is no service procedure to reset the password. The system board must be replaced for a

scheduled fee.

System management password

The system management password can also protect the system information stored in UEFI BIOS like a

supervisor password, but it has lower authority by default. The system management password can be set

through the UEFI BIOS menu or through Windows Management Instrumentation (WMI) with the Lenovo

client-management interface.

Chapter 4.Related service information 31

You can enable the system management password to have the same authority as the supervisor password

to control security related features. To customize the authority of the system management password through

the UEFI BIOS menu:

1. Enter the UEFI BIOS menu.

Note: When you are prompted by the icon , enter the correct supervisor password if a supervisor

password has been set, or enter the correct system management password if no supervisor password

has been set. Otherwise, you cannot change the configurations in the following steps.

2. Select Security ➙ Password ➙ System Management Password Access Control.

3. Follow the on-screen instructions.

If you have set both the supervisor password and the system management password, the supervisor

password overrides the system management password. If you have set both the system management

password and the power-on password, the system management password overrides the power-on

password.

How to remove the power-on password

To remove a power-on password, do the following:

If no supervisor password has been set, do the following to remove the power-on password:

1. Turn off the computer.

2. Remove the built-in battery. For instructions on how to remove the built-in battery, see “1170 Built-in

battery” on page 98.

3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see “1180 Coin-

cell battery” on page 99. Wait for a few seconds.

4. Reinstall the coin-cell battery. For instructions on how to install the coin-cell battery, see “1180 Coin-cell

battery” on page 99.

5. Reinstall the built-in battery. For instructions on how to install the built-in battery, see “1170 Built-in

battery” on page 98.

6. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt will not

be displayed. The power-on password has been removed.

If a supervisor password or a system management password has been set and is known to the service

technician, do the following to remove the power-on password:

1. Turn on the computer.

2. When the Lenovo logo is displayed, immediately press F1.

3. Type the supervisor password to enter the ThinkPad Setup program.

4. Select Security.

5. Select Password.

6. Select Power-On Password.

7. Type the current supervisor password in the Enter Current Password field. then leave the Enter New

Password field blank, and press Enter twice.

8. In the Changes have been saved window, press Enter.

9. Press F10 to save changes and exit the ThinkPad Setup program.

How to remove the storage password

Attention: If User only mode is selected and the user storage password has been forgotten and cannot be

made available to the service technician, neither Lenovo nor Lenovo authorized service technicians provide

32 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

any services to reset the user storage password, or to recover data from the storage device. To put the

system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to

replace the storage or solid-state drive with a scheduled fee.

To remove a storage password that has been forgotten, when the supervisor password and the admin

storage password are known, do the following:

1. Turn on the computer.

2. When the logo screen comes up, immediately press F1 to enter the ThinkPad Setup program. When the

power-on password icon is displayed on the screen, enter either the power-on password or the

supervisor password.

3. When the user storage password icon is displayed on the screen, press F1. The admin storage

password icon is displayed.

4. Enter the admin storage password to enter the ThinkPad Setup program.

5. Select Security.

6. Select Password.

7. Select NVMe x password, where x is the letter of the storage. A pop-up window opens.

8. Select Admin storage password.

9. Type the current admin storage password in the Enter Current Password field. Then leave the Enter

New Password field blank, and press Enter twice.

10. Press F10 to save changes and exit the ThinkPad Setup program. The user storage password and the

admin stroage password have been removed.

How to remove the system management password

To remove a system management password, do the following:

If no supervisor password has been set, do the following to remove the system management password:

1. Turn off the computer and disconnect ac power.

2. Disable the built-in battery. See “Disabling the built-in battery” on page 74.

3. Remove the built-in battery. See “1170 Built-in battery” on page 98.

4. Remove the coin-cell battery. See “1180 Coin-cell battery” on page 99.

5. Reinstall the coin-cell battery.

6. Reinstall the built-in battery.

7. Reinstall the base cover assembly.

8. Reconnect ac power.

9. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt does

not appear. The system management password has been removed.

If a supervisor password has been set and is known to the service technician, do the following to remove the

system management password:

1. Turn on the computer.

2. When the ThinkPad logo is displayed, immediately press F1.

3. Type the supervisor password to enter the ThinkPad Setup program.

4. Select Security.

5. Select Password.

6. Select System Management Password.

7. Type the current supervisor password in the Enter Current Password field. Then leave the Enter New

Password field blank, and press Enter twice.

Chapter 4.Related service information 33

8. In the Changes have been saved window, press Enter.

9. Press F10 to save changes and exit the ThinkPad Setup program. The system management password

has been removed.

Power management

To reduce power consumption, the computer has two power management modes: sleep and hibernation.

Sleep mode

When the computer enters sleep mode, the following events occur:

• The LCD is powered off.

• The solid-state drive is powered off.

• The microprocessor stops.

To put your computer into sleep mode, press Fn+4 or open the Start menu, click Power, and then click

Sleep.

To return to normal operation, press the Fn key only.

In certain circumstances, the computer goes into sleep mode automatically:

• After a period of inactivity specified in power plan settings

• When the battery power is low

Hibernation mode

In hibernation mode, the following occurs:

• The system status, random access memory (RAM), video random access memory (VRAM), and setup data

are stored on the solid-state drive.

• The system is powered off.

Note: If the computer enters the hibernation mode while it is docked to the docking station or the port

replicator, do not undock it before resuming normal operation. If you do undock it and then try to resume

normal operation, you will get an error message, and you will have to restart the system.

If you have defined one of the following actions as the event that causes the system to go into hibernation

mode, perform that action.

• Closing the lid.

• Pressing the power button.

Also, the computer goes into hibernation mode automatically after a period of inactivity specified in power

plan settings.

When the power is turned on, the computer returns from hibernation mode and resumes operation. The

hibernation file in the boot record on the solid-state drive is read, and system status is restored from the

solid-state drive.

Symptom-to-FRU index

This section contains following information:

• “Numeric error codes” on page 35

• “Error messages” on page 36

• “Beep errors” on page 37

34 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

• “No-beep symptoms” on page 39

• “LCD-related symptoms” on page 39

• “Intermittent problems” on page 40

• “Undetermined problems” on page 40

The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most

likely cause is listed first, in boldface type.

Note: Do the FRU replacement or other actions in the sequence shown in the column headed “FRU or

action, in sequence.” If replacing a FRU does not solve the problem, put the original part back in the

computer. Do not replace a nondefective FRU.

This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced

next.

A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be

any number.

If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not

described there, go to “Intermittent problems” on page 40.

Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual

for that device.

Numeric error codes

Table 2. Numeric error codes

Symptom or error FRU or action, in sequence

0177

Bad SVP data, stop POST task — The checksum of the

supervisor password in the EEPROM is not correct.

Replace the system board.

0183

Bad CRC of Security Settings in EFI Variable. Enter the

ThinkPad Setup program. – The checksum of the Security

settings in the EFI Variable is not correct.

1. Run the ThinkPad Setup program. The settings

will be corrected automatically. Then save the

current settings by pressing F10.

2. Replace the system board.

0187

EAIA data access error — The access to EEPROM is

failed.

Replace the system board.

0188

Invalid RFID Serialization Information Area.

Replace the system board.

0189

Invalid RFID configuration information area — The

EEPROM checksum is not correct.

Replace the system board.

0190

Critical low-battery error

1. Charge the built-in battery.

2. Replace the built-in battery.

0191

System Security — Invalid Remote Change requested.

1. Run the ThinkPad Setup program, and then save

current setting by pressing F10.

2. Replace the system board.

0199

System Security — Security password retry count

exceeded.

1. Run the ThinkPad Setup program. The retry count

will be reset. Then save the current settings by

pressing F10.

2. Replace the system board.

Chapter 4.Related service information 35

Table 2. Numeric error codes (continued)

Symptom or error FRU or action, in sequence

0270

Real Time Clock Error — System Real Time Clock is not

functional.

1. Run ThinkPad Setup to reset the time and date

2. Replace the coin-cell battery and run ThinkPad Setup

to reset the time and date.

0271

Check Date and Time settings — Neither the date nor the

time is set in the computer.

1. Run ThinkPad Setup to reset the time and date

2. Replace the coin-cell battery and run ThinkPad Setup

to reset the time and date.

1802

Unauthorized network card is plugged in — Turn off and

remove the network card.

1. Remove network card.

2. Replace the system board.

1820

More than one external fingerprint reader is attached.

Power off and remove all but the reader that you set up

within your main operating system.

Remove all but the reader that you set up for the

authentication.

2101

Detection error on SSD0 (M.2)

Detection error on Storage Device0 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2102

Detection error on SSD1 (M.2)

Detection error on Storage Device1 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2103

Detection error on Storage Device2 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2111

Read error on SSD0 (M.2)

Read error on Storage Device0 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2112

Read error on SSD1 (M.2)

Read error on Storage Device1 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2113

Read error on Storage Device2 (M.2)

1. Reseat the M.2 solid-state drive.

2. Replace the M.2 solid-state drive.

3. Replace the system board.

2200

Machine Type and Serial Number are invalid.

Replace the system board.

2201

Machine UUID is invalid

Replace the system board.

Error messages

Table 3. Error messages

Symptom or error FRU or action, in sequence

Fan error. 1. Replace the fan.

2. Apply thermal grease.

3. Replace the system board.

One fan error. 1. Replace the fan.

2. Apply thermal grease.

3. Replace the system board.

36 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Table 3. Error messages (continued)

Symptom or error FRU or action, in sequence

Thermal sensing error. Replace the system board.

The non-volatile system UEFI variable storage is nearly

full.

Press F1 to enter ThinkPad Setup after the error message

is displayed. Then clean up the storage.

The battery installed is not supported by this system and

will not charge. Please replace the battery with the correct

Lenovo battery for this system. Press the ESC key to

continue.

Replace the battery.

This system does not support batteries that are not

genuine Lenovo made or authorized. The system will

continue to boot, but may not charge unauthorized

batteries. Press the ESC key to continue.

Attention: Lenovo has no responsibility for the

performance or safety of unauthorized batteries, and

provides no warranties for failures or damage arising out

of their use.

Replace the battery.

Beep errors

Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black

screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep

technology, do the following:

1. Go to https://support.lenovo.com/smartbeep or scan the following QR Code.

2. Download the proper diagnostic app and install it on your smartphone.

3. Run the diagnostic app and place the smartphone near the computer.

4. Press the Fn key on your computer to emit the beep again. The diagnostic app decodes the beep error

and shows possible solutions on the smartphone.

The following section describes some beep errors and the corresponding solutions.

Note: Do not attempt to service a product yourself unless instructed to do so by the Customer Support

Center or product documentation. Only use a Lenovo-authorized service provider to repair your product.

Chapter 4.Related service information 37

Error codes Solutions

0001: Reset error (platform reset not de-asserted) 1. Remove the ac power adapter and the removable

battery if your computer has one. Then, reset the

computer by doing one of the following:

• For models with the emergency-reset hole,

insert a straightened paper clip into the

emergency-reset hole. Wait for one minute.

Then, reconnect all power resources and restart

the computer.

• For models without the emergency-reset hole,

press and hold the power button for about

seven seconds. Then, reconnect to all power

resources and restart the computer.

2. Replace the system board (service provider only).

0002: Internal bus error Replace the system board (service provider only).

0281: General embedded controller error Replace the system board (service provider only).

0282: Memory module error 1. Reinstall or replace the memory module.

2. Replace the system board (service provider only).

0283: PCI resource error 1. Remove PCIe devices (the M.2 card, PCIe card,

and so on) (service provider only).

2. Replace the system board (service provider only).

0284: TCG-compliant functionality-related error (might be

the BIOS code validation failure) Replace the system board (service provider only).

0285: TCG-compliant functionality-related error (might be

the TPM initialization failure) Replace the system board (service provider only).

0286: Integrated graphics error Replace the system board (service provider only).

0287: Discrete graphics error 1. Reinstall or replace the discrete graphics card

(service provider only).

2. Replace the system board (service provider only).

0288: Computer display error 1. Reconnect the display cable on both the system

board side and the computer display side (service

provider only).

2. Replace the system board (service provider only).

38 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

No-beep symptoms

Table 4. No-beep symptoms

Symptom or error FRU or action, in sequence

No beep, power-on indicator on, LCD blank, and no

POST.

1. Run LCD Self Test.

2. Ensure that every connector is connected tightly and

correctly.

3. Reseat memory module.

4. Replace the system board.

No beep, power-on indicator on, and LCD blank during

POST. 1. Run LCD Self Test.

2. Reseat memory module.

3. Replace the system board.

The power-on password prompt appears. A power-on password or a supervisor password is set.

Type the password and press Enter.

The storage password prompt appears. A storage password is set. Type the password and press

Enter.

LCD-related symptoms

Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The

presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT

LCD technology, but excessive pixel problems can cause viewing concerns.

If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty.

However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and

it should be replaced.

Notes:

• This policy applies to all ThinkPad Notebooks purchased on 1 January, 2008 or later.

• Lenovo will not provide warranty replacement if the LCD is within specifications because we cannot

guarantee that any replacement LCD will have zero pixel defects.

• One pixel consists of R, G, B sub-pixels.

LCD Self Test

When you turn on the computer and the LCD goes black, run LCD Self Test to help you determine whether

the LCD functions normally.

To run LCD Self Test:

1. Ensure that the computer is connected to ac power. Then, press the power button for about seven

seconds to turn off the computer.

2. Press Fn, left Ctrl, and the power button at the same time. If the computer displays five solid colors in

sequence across the entire screen, it indicates that the LCD functions normally.

3. The test lasts for about 20 seconds and then exits automatically. You also can press the power button to

exit the test.

Chapter 4.Related service information 39

Table 5. LCD-related symptoms

Symptom or error FRU or action, in sequence

No beep, power-on indicator on, and a blank LCD during

POST.

1. Run LCD Self Test.

2. Replace the system board.

• LCD backlight not working.

• LCD too dark.

• LCD brightness cannot be adjusted.

• LCD contrast cannot be adjusted.

1. Reseat the LCD connectors.

2. Replace the LCD assembly.

3. Replace the system board.

• LCD screen unreadable.

• Characters missing pixels.

• Screen abnormal.

• Wrong color displayed.

1. See important note for “LCD-related symptoms.”

2. Reseat all LCD connectors.

3. Replace the LCD assembly.

4. Replace the system board.

Horizontal or vertical lines displayed on LCD. Replace the LCD assembly.

Intermittent problems

Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware

defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be

considered only when a problem recurs.

When analyzing an intermittent problem, do the following:

1. Run the diagnostic test for the system board in loop mode at least 10 times.

2. If no error is detected, do not replace any FRUs.

3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more

errors exist.

Undetermined problems

If the diagnostic tests did not identify the adapter or device that has failed, if wrong devices are installed, or if

the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs

that have no defects).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. See “Power system

checkout” on page 26.

1. Turn off the computer.

2. Visually check each FRU for damage. Replace any damaged FRU.

3. Remove or disconnect all of the following devices:

a. Non-ThinkPad devices

b. Devices attached to the docking station or the port replicator

c. Printer, mouse, and other external devices

d. Built-in battery

e. Solid-state drive

f. External diskette drive or optical drive

g. Memory module

h. PC cards

4. Turn on the computer.

5. Determine whether the problem has been solved.

6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):

a. System board

b. LCD unit

40 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 5. Configuring RAID

This chapter provides information about storage drive requirements for Redundant Array of Independent

Disks (RAID) levels, and instructions on how to configure RAID for your computer.

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.

Storage drive requirements for RAID levels

Your computer supports M.2 Non-Volatile Memory Express (NVMe) solid-state drive.

Note: Ensure that your computer has two identical storage drives installed in slot 1 and slot 2 (two M.2

NVMe solid-state drives with the same capacity) for supported RAID levels. If only one drive is installed, or

two different types of drives are installed, the following information does not apply.

Your computer supports the following RAID levels:

• RAID 0: striped disk array

– Consists of two identical storage drives

– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB

– Better performance without fault tolerance

– Higher risk of data loss resulting from a member drive failure compared with non-RAID configuration

• RAID 1: mirrored disk array

– Consists of two identical storage drives

– Improved reading performance and 100% redundancy

Configuring RAID with the Intel RST configuration utility

This topic provides the following instructions to help you configure RAID with the Intel RST configuration

utility:

• How to enter the Intel RST configuration utility

• How to create RAID volumes

• How to delete RAID volumes

• How to reset storage drives to non-RAID

• How to rebuild RAID 1 volumes

Entering the Intel RST configuration utility

This topic provides instructions on how to enter the Intel RST configuration utility.

Enabling RAID from ThinkPad Setup

If RAID is disabled, you must enable it manually before entering the Intel RST configuration utility.

To enable RAID, do the following:

1. Restart the computer. When the logo screen is displayed, press F1 to start the ThinkPad Setup program.

2. Select Config ➙ Storage ➙ VMD controller ➙ On .

3. Press F10 to save changes and exit.

Entering the Intel RST configuration utility

To enter the Intel RST configuration utility, do the following:

1. Restart the computer. When the logo screen is displayed, press F1 to start the ThinkPad Setup program.

2. Select Config ➙ Storage ➙ Intel (R) Rapid Storage Technology and then press Enter to open the Intel

(R) Rapid Storage Technology window.

The following options are displayed after you enter the Intel RST configuration utility:

• Create RAID Volume: This option is used to create a RAID volume. If no internal storage drives can be

used, this option is not available.

• RAID Volumes: This option is used to confirm the information of the created RAID volumes.

• Non-RAID Physical Disks: This option is used to confirm the information of all non-RAID drives.

Press the up and down arrow keys to select an option. Press Enter to enter the menu for the selected option.

Press Esc to exit the Intel RST configuration utility.

Creating RAID volumes

This topic provides instructions on how to use the Intel RST configuration utility to create RAID volumes.

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:

42 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

1. Enter the Intel RST configuration utility. See “Entering the Intel RST configuration utility” on page 42.

2. Press the up and down arrow keys to select Create RAID Volume, and then press Enter to open the

CREATE RAID VOLUME window.

3. Press the up and down arrow keys to select and configure the options one by one.

a. Name: You can use the default name or type a preferred name for the RAID volume.

b. RAID Level: You can press Enter to change the RAID to one of the following:

• RAID0 (Stripe)

• RAID1 (Mirror)

c. Select Disks: Press the up and down arrow keys to select a drive, and then press Spacebar or Enter

to add it into a group. An X mark is displayed next to the selected drive.

Note: The drive that cannot be used to create a RAID volume is not selectable.

d. Strip Size: Press the up and down arrow keys to select a strip size, and then press Enter to complete

the configuration.

Note: This option is only available for RAID 0.

e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value.

f. Create Volume: Press Enter to finish configurations of the preceding options and create a volume.

Note: The Create Volume option might not be selectable for some reasons, for example, if different

types of drives are selected, the option is not selectable. If it is not selectable, see the message

displayed under Create Volume for reference.

After the RAID volume is created, the Intel (R) Rapid Storage Technology window is displayed, and

the created volume is displayed under RAID Volumes.

4. Press F10 to save changes and exit.

Deleting RAID volumes

This topic provides instructions on how to use the Intel RST configuration utility to delete RAID volumes.

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. Enter the Intel RST configuration utility. See “Entering the Intel RST configuration utility” on page 42.

2. Press the up and down arrow keys to select the volume that you want to delete under RAID Volumes.

Press Enter to open the RAID VOLUME INFO window.

3. Select Delete and press Enter to delete it from the RAID Volumes list.

4. When prompted, select Yes to confirm the deletion of the selected RAID volume.

After you delete the RAID volume, the Intel (R) Rapid Storage Technology window is displayed. Member

drives of the deleted volume are displayed under Non-RAID Physical Disks.

5. Press F10 to save changes and exit.

Resetting storage drives to non-RAID

This topic provides instructions on how to use the Intel RST configuration utility to reset storage drives to

non-RAID.

Attention: All the existing data stored on the selected drive will be erased after you reset it to non-RAID.

Chapter 5.Configuring RAID 43

To reset a storage drive to non-RAID, do the following:

1. Enter the Intel RST configuration utility. See “Entering the Intel RST configuration utility” on page 42.

2. Press the up and down arrow keys to select the volume that you want to reset under RAID Volumes.

Press Enter to open the RAID VOLUME INFO window.

3. Press the up and down arrow keys to select the drive that you want to reset under RAID Member Disks.

Press Enter to open the PHYSICAL DISK INFO window.

4. Select Reset to Non-RAID and press Enter. When prompted, press Yes to confirm the reset action.

After the reset process finishes, the Intel (R) Rapid Storage Technology window is displayed. The reset

drive is listed under Non-RAID Physical Disks, and the volume of the reset drive is still listed under

RAID Volumes, but the status is changed from Normal to Failed or Degraded.

5. Press F10 to save changes and exit.

Rebuilding RAID 1 volumes

If the status of a RAID 1 volume is Failed or Degraded, you can rebuild it through the Intel RST configuration

utility. To rebuild a RAID 1 volume, ensure that at least one member drive of the RAID 1 volume works

correctly. Replace the failed drive with a new one that has the same capacity before you rebuild a RAID 1

volume.

To rebuild a RAID 1 volume, do the following:

1. Enter the Intel RST configuration utility. See “Entering the Intel RST configuration utility” on page 42.

2. Press the up and down arrow keys to select the volume that you want to rebuild under RAID Volumes.

Press Enter to open the RAID VOLUME INFO window.

3. Select Rebuild and press Enter to open the Rebuild Volume window.

4. Select the drive that you want to rebuild and press Enter to initiate the rebuild process.

After you initiate the rebuild process, the Intel (R) Rapid Storage Technology window is displayed. The

RAID 1 volume under rebuilding is displayed under RAID Volumes with a Rebuilding mark.

5. Wait a few minutes. When the rebuild process finishes successfully, the Rebuilding mark is changed to

the Normal mark.

6. Press F10 to save changes and exit.

44 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 6. Using the special keys

The special keys on the keyboard help you work more effectively.

Invoke the special function printed as an icon on each key or standard function of

F1–F12 function keys.

FnLock indicator on: standard function

FnLock indicator off: special function

Enable / disable speakers

Decrease volume

Increase volume

Enable / disable microphones

Darken display

Brighten display

Manage external displays

Enable / disable wireless

Open / collapse notification center

Answer incoming calls on Microsoft Teams

Decline incoming calls on Microsoft Teams

Open the Vantage app. You can customize the function of this key on the Vantage

app.

Open calculator

Enter sleep mode

Open Snipping Tool

Toggle keyboard backlight (for selected models)

Break operation

Pause operation

Scroll contents

Send system request

Enter sleep mode

To wake up the computer, press Fn or the power button.

Go to beginning

Go to end

46 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 7. Locations

This chapter introduces the locations of the hardware components on your computer.

Locating computer controls, connectors, and indicators

This topic introduces the locations of the computer controls, connectors, and indicators.

Front view

P15 Gen 2 and T15g Gen 2

Infrared camera * / Camera * Webcam privacy shutter *

Microphone * Touch screen *

Power button TrackPoint® pointing stick

Fingerprint reader Trackpad

TrackPoint buttons Speaker

48 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

P17 Gen 2

Infrared camera * / Camera * Webcam privacy shutter *

Microphone * Power button

TrackPoint® pointing stick Fingerprint reader

Trackpad TrackPoint buttons

Speaker

* for selected models

Chapter 7.Locations 49

Bottom view

50 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Side view

HDMI™ connector Always on USB 3.2 connector Gen 1

Nano-SIM-card tray Audio connector

Smart-card slot* SD card reader

USB 3.2 connector Gen 1 Security-lock slot

* for selected models

Chapter 7.Locations 51

Rear view

Ethernet connector Power connector

USB-C (Thunderbolt 4) connectors USB-C (3.2 Gen 2) connector

Locating FRUs and CRUs

This topic introduces the following service parts:

• “Major FRUs” on page 53

• “LCD FRUs” on page 59

• “Miscellaneous parts” on page 63

Notes:

• CRU statement for customers:

You can resolve some problems with your product with a replacement part you can install yourself, called a

“Customer Replaceable Unit” or “CRU.” Installation of self-service CRUs is your responsibility. If you intend on

installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped

with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your

product in this Hardware Maintenance Manual. An electronic version of this manual can be found at https://

support.lenovo.com. Click Guides & Manuals and then follow the on-screen instructions to find the manual for your

product. You might be required to return the defective part that is replaced by the CRU. When return is required: (1)

return instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you

might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of

your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full details.

ThinkPad computers contain the following types of CRUs:

– 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.

• Each FRU/CRU is available for all types or models, unless otherwise specified.

52 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Major FRUs

P15/T15g Gen 2

Table 6. Major FRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1LCD unit No No

2 Keyboard bezel No No

3 Power button board with cable No No

Chapter 7.Locations 53

Table 6. Major FRUs (continued)

No. FRU descriptions Self-service CRU Optional-service CRU

4 Fingerprint reader cable No No

5 Fingerprint reader module No No

6 Fingerprint bracket No No

7Service bracket No No

8Speaker assembly No No

9Coin-cell battery No No

10 Memory modules under the keyboard No Yes

11 Memory modules under the bottom cover No Yes

12 Wireless WAN card thermal pad No No

13 Wireless LAN card No No

14 Wireless WAN card* No No

15 Built-in battery No No

16 M.2 solid-state drive thermal pad No No

17 M.2 solid-state drive No Yes

18 Smart-card reader cable* No No

19 Smart-card reader* No No

20 Dummy smart-card reader* No No

21 Service door Yes No

22 MIMO wireless-WAN antenna No No

23 Base cover assembly No No

24 Trackpad cable No No

25 Trackpad No No

26 Nano SIM tray Yes No

27 Chassis assembly No No

28 DC-in cable No No

29 DC-in bracket No No

30 System board No No

31 GPU board No No

32 I/O board No No

33 I/O board cable No No

34 Thermal fan assembly No No

35 Hinge caps No No

36 Keyboard No Yes

37 Elastic adhesive tapes No No

aPower cord Yes No

54 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Table 6. Major FRUs (continued)

No. FRU descriptions Self-service CRU Optional-service CRU

b ac power adapter Yes No

cMiscellaneous parts (see “Miscellaneous

parts” on page 63)

No No

d Lenovo factory recovery USB key* No No

* for selected models

Chapter 7.Locations 55

P17 Gen 2

56 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Table 7. Major FRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1LCD unit No No

2 Hinge caps No No

3 Power button board with cable No No

4 Fingerprint reader cable No No

5Fingerprint reader module No No

6 Fingerprint reader bracket No No

7Speaker assembly No No

8 Keyboard sub board No No

9Smart-card reader* No No

10 Dummy smart-card reader* No No

11 Smart-card reader cable* No No

12 GPU board No No

13 Wireless LAN card No No

14 Wireless WAN card No No

15 Service bracket No No

16 Memory modules under the bottom cover Yes No

17 M.2 solid-state drive No Yes

18 M.2 solid-state drive thermal pad No No

19 DC-in bracket No No

20 DC-in cable No No

21 Service door Yes No

22 Base cover assembly No No

23 Thermal fan assembly No No

24 Built-in battery No No

25 MIMO antenna kit and cable No No

26 System board No No

27 Coin-cell battery No No

28 I/O board No No

29 I/O board cable No No

30 Chassis assembly No No

31 Memory module bracket under the keyboard No No

32 Keyboard bezel No No

33 Trackpad No No

34 Trackpad cable No No

35 Keyboard No Yes

Chapter 7.Locations 57

Table 7. Major FRUs (continued)

No. FRU descriptions Self-service CRU Optional-service CRU

36 Nano-SIM-card tray* Yes No

37 Elastic adhesive tapes No No

aPower cord Yes No

b ac power adapter Yes No

cMiscellaneous parts (see “Miscellaneous parts”

on page 63)

No No

dLenovo factory recovery USB key No No

* for selected models

Note: The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. It

might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/

lenovorecovery, though additional shipping and handling fees might apply.

58 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

LCD FRUs

For 15–inch models without touch function:

Table 8. P15/T15g Gen 2 (non-touch models) LCD FRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1LCD bezel assembly No No

2 LCD cable No No

3LCD panel No No

4Microphone rubbers* No No

5Microphone board* No No

6 Infrared camera/mic combo board* No No

7 Conventional camera/mic combo board* No No

8Hinge assembly No No

9Infrared camera/LED cable assembly* No No

Chapter 7.Locations 59

Table 8. P15/T15g Gen 2 (non-touch models) LCD FRUs (continued)

No. FRU descriptions Self-service CRU Optional-service CRU

10 LCD rear cover assembly No No

11 LCD elastic adhesive tapes No No

12 Conventional camera/LED cable assembly* No No

13 Antenna kit No No

* for selected models

60 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

For 15–inch models with touch function:

Table 9. P15/T15g Gen 2 (touch models) LCD FRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1LCD panel No No

2 Infrared camera/mic combo board No No

3Infrared camera/LED cable assembly No No

4 Antenna kit No No

5LCD rear cover assembly No No

6LCD elastic adhesive tapes No No

7Hinge assembly No No

8 LCD cable No No

9LCD strip bezel No No

10 Microphone rubbers* No No

Chapter 7.Locations 61

For 17–inch models:

Table 10. P17 Gen 2 LCD FRUs

No. FRU descriptions Self-service CRU Optional-service CRU

1LCD bezel assembly No No

2UHD LCD panel* No No

3FHD LCD panel* No No

4 Wireless LAN antenna kit No No

5 Camera/LED cable No No

6LCD rear cover assembly No No

7Hinge assembly (for FHD LCD panel)* No No

8Hinge assembly (for UHD LCD panel)* No No

9 LCD cable No No

10 LCD bezel screw cover No No

11 Microphone board* No No

62 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Table 10. P17 Gen 2 LCD FRUs (continued)

No. FRU descriptions Self-service CRU Optional-service CRU

12 Camera/microphone asssembly* No No

13 Microphone rubbers No No

Miscellaneous parts

Table 11. Miscellaneous parts (for P15 and T15g Gen 2 without touch function)

FRU descriptions Self-service CRU Optional service CRU

Screw kit:

• Screw M2 x L3, black (12)

• Screw M2 x L2, black (4)

• Screw M2 x L8, black (6)

• Screw M2 x L3 black (2)

• Screw M2 x L14, black (2)

• Screw M2.5 x L3.5, black (6)

• Screw M2.5 x L6, black (3)

• Screw M2.5 x L8, black (4)

• Screw M2.5 x L12, black (6)

• Screw M2 x L3, Black (3)

• Screw M2 x L2.5, Silver (2)

• Screw M2 x L2.5, Black (5)

• Screw M2 x L6.5, Black (3)

• Screw M2.5 x L6.5, Black (1)

No No

Miscellaneous kit

• Rubber for dc-in lens

No No

Label kit No No

Chapter 7.Locations 63

Table 12. Miscellaneous parts (for P15 and T15g Gen 2 with touch function)

FRU descriptions Self-service CRU Optional service CRU

Screw kit:

• Screw M2 x L3, black (12)

• Screw M2 x L2, black (4)

• Screw M2 x L8, black (6)

• Screw M2 x L3 black (2)

• Screw M2 x L14, black (2)

• Screw M2.5 x L3.5, black (4)

• Screw M2.5 x L4, black (2)

• Screw M2.5 x L6, black (3)

• Screw M2.5 x L8, black (4)

• Screw M2.5 x L12, black (6)

• Screw M2 x L3, Black (3)

• Screw M2 x L2.5, Silver (6)

• Screw M2 x L2.5, Black (5)

• Screw M2 x L6.5, Black (3)

• Screw M2.5 x L6.5, Black (1)

No No

Miscellaneous kit

• Rubber for dc-in lens

No No

Label kit No No

Table 13. Miscellaneous parts (for P17 Gen 2)

FRU descriptions Self-service CRU Optional service CRU

Screw kit:

• Screw M2 x L3, silver (30)

• Screw M2 x L2, black (4)

• Screw M2 x L8, black (7)

• Screw M2 x L3 black (2)

• Screw M2 x L14, black (2)

• Screw M2 x L1.5 , black (1)

• Screw M2.5 x L3.5, silver (4)

• Screw M2.5 x L4, black (4)

• Screw M2.5 x L6, black (7)

• Screw M2.5 x L7, black (2)

• Screw M2.5 x L12, black (5)

No No

Miscellaneous kit

• Rubber for dc-in lens

No No

Label kit No No

64 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Connector and cable guide

This section provides information for Lenovo authorized service technicians to help identify connectors and

cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major

FRUs” on page 53 and “LCD FRUs” on page 59.

Note: Depending on your model, some connectors or cables might not be available.

System board connectors and cables

No. Connector/feature Internal cable required Cable connection

1Ethernet connector (external) No Connect the computer to a LAN through

this connector.

2dc-in connector (internal) dc-in connector cable Connect the dc-in connector cable to this

connector.

3Thunderbolt 4 connectors

(external)

No Connect a compatible device to this

connector.

4USB 3.2 Gen 2 connector

(internal)

No Connecto USB-compatible devices to

this connector.

5Thermal fan assembly connector

(internal)

Thermal fan assembly

cable

The thermal fan assembly comes with

cable. Connect the cable to this

connector.

6HDMI connector (external) No Connect a compatible digital audio

device or video monitor to this

connector.

Chapter 7.Locations 65

No. Connector/feature Internal cable required Cable connection

7Always On USB 3.2 connector

Gen 1 (external)

No Connecto USB-compatible devices to

this connector.

8Audio connector (external) No Connect headphones or a headset with

3.5–mm (0.14–inch) 4–pole plug to this

connector.

9Trackpad connector (internal) Trackpad cable Connect one end to the track pad and

the other end to this connector.

10 2242 M.2 solid-state drive slot

(internal)

No Insert the 2242 M.2 solid-state drive into

this slot.

11 2242 M.2 solid-state drive slot

(internal)

No Insert the 2242 M.2 solid-state drive into

this slot.

12 Memory module under the

bottom door slots (internal)

No Insert the memory module into this slot.

13 GPU board slot (internal) No Insert the GPU board into this slot.

14 Smart-card connector (internal) Smart card cable Connect one end to the smart card

reader and the other end to this

connector.

15 Battery connector (internal) No The battery comes with cable. Connect

the cable to this connector.

16 Thermal fan connector (internal) Thermal fan assembly

cable

The thermal fan assembly comes with

cable. Connect the cable to this

connector.

17 I/O board connector (internal) I/O board cable Connect one end to the I/O board and

the other end to this connector.

18 Coin-cell battery connector

(internal)

Coin-cell battery cable The coin-cell battery comes with a cable.

Connect the cable to this connector.

19 WLAN connector (internal) Keyboard assembly

with cable

The keyboard assembly comes with the

cables. Connect the cables to these

connectors.

20 LED/Camera cable connector

(internal)

LED/Camera cable

assembly

The camera cable assembly has three

ends. Connect the camera end to the

camera card, the LED end to the LED

card, and the MB end to this connector.

21 Power button connector

(internal)

Power button cable Connect one end to the power button

and the other end to this connector.

22 Fingerprint reader connector

(internal)

Fingerprint reader cable Connect one end to the fingerprint reader

card and the other end to this connector.

23=24 Keyboard connectors (internals) Keyboard assembly

with cable

The keyboard assembly comes with the

cables. Connect the cables to these

connectors.

25 2242 M.2 solid-state drive slot

(internal)

No Insert the 2242 M.2 solid-state drive into

this slot.

26 Memory module under the

keyboard slots (internal)

No Insert the memory module into this slot.

27 WWAN connector (internal) No Insert the wireless-WAN card into this

slot.

66 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

No. Connector/feature Internal cable required Cable connection

28 LCD connector (internal) LCD cable Connect one end of the LCD cable to the

LCD panel and the other end to this

connector.

29 Speaker assembly connector

(internal)

Speaker assembly

cable

The speaker assembly comes with cable.

Connect the cable to this connector.

30 Nano-SIM-card slot (external) No If the computer supports wireless WAN,

insert a nano-SIM card into this slot to

establish wireless-WAN connection.

Looking up FRU information

For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to:

https://support.lenovo.com/partslookup

Chapter 7.Locations 67

68 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 8. FRU replacement notices

This chapter presents notices related to removing and replacing parts. Read this chapter carefully before

replacing any FRU.

CRU statement for customers:

You can resolve some problems with your product with a replacement part you can install yourself, called a

“Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are

designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optional-

service CRUs, you can either install the CRU yourself or you can request that a Service Provider install the

CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship

the CRU to you. CRU information and replacement instructions are shipped with your product and are

available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware

Maintenance Manual. An electronic version of this manual can be found at https://support.lenovo.com. Follow

the on-screen instructions to find the manual for your product. You might be required to return the defective

part that is replaced by the CRU. When return is required: (1) return instructions, a prepaid shipping label,

and a container will be included with the replacement CRU; and (2) you might be charged for the

replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of your receipt of the

replacement CRU. See your Lenovo Limited Warranty documentation for full details.

Service tool kit

Ensure that the following service tool kit is prepared before you service a ThinkPad notebook computer.

No. Tool name Tool type

1 Phillips-head screwdriver Common tool

2 Torx-head screwdriver Common tool

3Conductive tweezers Common tool

4 Hexagonal socket Common tool

5Silicone grease Consumable tool

6 Polyamide tape Consumable tool

7 Mylar tape Consumable tool

8 Eraser Consumable tool

9 Electrical tape Consumable tool

10 Double-sided tape Consumable tool

11 Conductive tape Consumable tool

Note: The silicone grease can be applied to the surfaces of the microprocessor and heatsink to eliminate air

gaps. The hexagonal socket is used to pick up the antenna connectors.

Screw notices

Loose screws can cause a reliability problem. In the ThinkPad notebook computer, this problem is

addressed with special nylon-coated screws that have the following characteristics:

• They maintain tight connections.

• They do not easily come loose, even with shock or vibration.

• They are harder to tighten.

Do the following when you service this machine:

• Keep the screw kit in your tool bag. For the part number of the screw kit, go to https://support.lenovo.com/

partslookup.

• It is recommended to use new screws.

• It is recommended to use each screw only once.

Tighten screws as follows:

• Plastic to plastic

Turn an additional 90 degrees after the screw head touches the surface of the plastic part.

• Logic card to plastic

Turn an additional 180 degrees after the screw head touches the surface of the logic card.

Notes:

• Ensure that you use the correct screw. It is recommended to use new screws for replacements. If you

have a torque screwdriver, tighten all screws firmly to the torque specified in the screw information table

for each step.

• Ensure that torque screwdrivers are calibrated correctly following country specifications.

Retaining serial numbers

This section includes the following descriptions:

• “Restoring the serial number of the system unit” on page 70

• “Retaining the UUID” on page 71

Restoring the serial number of the system unit

When the computer was manufactured, the EEPROM on the system board was loaded with the serial

numbers of the system and all major components. These numbers need to remain the same throughout the

life of the computer.

If you replace the system board, you must restore the serial number of the system unit to its original value.

The serial number of the system unit is written on the label attached to the bottom of the computer.

70 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

If you can not find the serial number of the system unit on the bottom of the computer, try the following

method to get the number:

1. Connect a USB memory key to the computer.

2. Go to https://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a

Maintenance Key.

Note: Only an authorized Lenovo service technician can access the above Web site.

3. Restart the computer.

4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is

displayed.

5. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for

Asset ID screen is displayed.

6. Type 2 under Enter the action desired, then press Enter. The serial number of each device in your

computer is displayed; the serial number of the system unit is listed as follow:

20- Serial number

7. Record the serial number of the system unit.

After you replace the system board, do the following to restore the serial number of the system unit:

1. Connect the Maintenance Key to the computer.

2. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is

displayed.

3. Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update Utility for

Asset ID screen is displayed.

4. Type 1 under Enter the action desired, then press Enter. Then follow the instructions on the screen to

restore the serial number of the system unit.

Retaining the UUID

The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at

production and stored in the EEPROM of your system board.

The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two

computers in the world have the same number.

When you replace the system board, perform the following steps to create a new UUID for the system board

if the system board does not have a UUID:

1. Connect a USB memory key to the computer.

2. Go to https://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a

Maintenance Key.

Note: Only an authorized Lenovo service technician can access the above Web site.

3. Restart the computer.

4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interface

is displayed.

5. Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility interface is

displayed.

6. Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a valid

UUID already exists, it is not overwritten.

Chapter 8.FRU replacement notices 71

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) is stored in the EEPROM of the system board.

The electronic storage of this information simplifies the procedure to check if the ECA has been previously

applied to a machine. The machine does not need to be disassembled to check for the ECA application.

To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write

function on the LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key.

1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and

then restart the computer.

2. From the main menu, select 6. Set ECA Information.

3. To read the ECA information, select 2. Read ECA/rework number from EEPROM and follow the

instructions on the screen; To read box build date, select 5. Read box build date from EEPROM, and

follow the instructions on the screen.

After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's

application. Use the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance

Key to update the EEPROM.

Note: Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed to be the

same as the machine type of the machine that had the ECA applied to it.

1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and

then restart the computer.

2. From the main menu, select 6. Set ECA Information.

3. To write the ECA information, select 1. Write ECA/rework number from EEPROM, and follow the

instruction; To write box build date, select 4. Write box build date from EEPROM, and follow the

instruction on the screen.

If the system board is being replaced, try to read the ECA information from the old system board and transfer

the information to the new system. If the system board is inoperable, this will not be possible.

72 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 9. Removing or replacing a FRU

This chapter provides instructions on how to remove or replace a FRU.

CRU statement for customers:

You can resolve some problems with your product with a replacement part you can install yourself, called a

“Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are

designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optional-

service CRUs, you can either install the CRU yourself or you can request that a Service Provider install the

CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship

the CRU to you. CRU information and replacement instructions are shipped with your product and are

available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware

Maintenance Manual. An electronic version of this manual is available for downloading at https://

support.lenovo.com. Follow the on-screen instructions to find the manual for your product. You might be

required to return the defective CRU. When return is required: (1) return instructions, a prepaid shipping label,

and a container will be included with the replacement CRU; and (2) you might be charged for the

replacement CRU if Lenovo does not receive the defective part within thirty (30) days of your receipt of the

replacement CRU. See your Lenovo Limited Warranty documentation for full details.

General guidelines

When removing or replacing a FRU, be sure to observe the following general guidelines:

1. Do not try to service any computer unless you have been trained and certified. An untrained person runs

the risk of damaging parts.

2. Before replacing any FRU, review Chapter 8 “FRU replacement notices” on page 69.

3. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs

are listed at the beginning of each FRU replacement section. Remove them in the order in which they are

listed.

4. Follow the correct sequence in the steps for removing a FRU, as given in the illustrations by the numbers

in square callouts.

5. When turning a screw, turn it in the direction as given by the arrow in the illustration.

6. When removing a FRU, move it in the direction as given by the arrow in the illustration.

7. To put the new FRU in place, reverse the removal procedure and follow any notes that pertain to

replacement.

8. When replacing a FRU, use the correct screws as shown in the replacement procedures.

DANGER

Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets,

remove the built-in battery, and then disconnect any interconnecting cables.

Attention:

• After replacing a FRU, do not turn on the computer until you have made sure that all screws, springs, and

other small parts are in place and none are loose inside the computer. Verify this by shaking the computer

gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

• The system board is sensitive to, and can be damaged by, electrostatic discharge (ESD). Before touching

it, establish personal grounding by touching a ground point with one hand or by using an electrostatic

discharge strap.

Before servicing the computer

Carefully read this topic before servicing the computer.

Disabling the built-in battery

Before replacing any FRU, ensure that you disable Fast Startup first and then disable the built-in battery.

To disable Fast Startup, do the following:

1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or Small

icons.

2. Click Power Options, and then click Choose what the power buttons do on the left pane.

3. Click Change settings that are currently unavailable at the top.

4. If prompted by User Account Control (UAC), click Yes.

5. Clear the Turn on fast startup check box, and then click Save changes.

To disable the built-in battery, do the following:

1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter ThinkPad

Setup.

2. Select Config ➙ Power. The Power submenu is displayed.

3. Select Disable built-in battery and press Enter.

4. Select Yes in the Setup Confirmation window. The built-in battery is disabled and the computer turns off

automatically. Wait three to five minutes to let the computer cool.

Removing the nano-SIM card

If the computer has a nano-SIM card installed, you need to remove the nano-SIM card before you start the

servicing.

After you finish the servicing, ensure that you install the nano-SIM card back into the slot firmly.

Removing a major FRU

This section provides instructions on how to remove a major FRU. Your computer might look different from

the illustrations in this section.

74 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

1010 Bottom door

Removal steps of the bottom door

Note: Loosen the screw 1 that secures the bottom door, and remove the bottom door.

1020 M.2 solid-state drive

For access, remove these FRUs:

• “1010 Bottom door” on page 75

Attention:

• Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper

handling can cause damage and permanent loss of data.

• Before removing the drive, have the user make a backup copy of all the information on it if possible.

• Never remove the drive while the system is operating or in suspend mode.

Chapter 9.Removing or replacing a FRU 75

Removal steps of the M.2 solid-state drive

When installing: If your computer is installed with only one M.2 solid-state drive, ensure that the M.2 solid-

state drive is installed into slot 1.

Step Screw (quantity) Color Torque

2M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm

(1.85 kgf-cm)

1030 Memory module under the bottom cover

For access, remove these FRUs:

• “1010 Bottom door” on page 75

76 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the memory module under the bottom cover

Installation steps of the memory module under the bottom cover

When installing:

• Ensure that the memory module is firmly installed in the slot and does not move easily.

Chapter 9.Removing or replacing a FRU 77

Important notice about memory module installation

Your computer comes with four memory module slots, and supports up to 128 GB memory module in total.

Slot a and slot b are under the bottom door, and slot c and slot d are under the keyboard. When installing

or replacing a memory module, use the following guidelines for better performance:

Important: It is recommended that you follow below installation rules. Otherwise, the computer might either

not start or not perform well.

• To install one or two memory modules in total, install it/them in the slots under the bottom cover. Do not

install it/them in the slots under the keyboard.

• To install three or four memory modules in total, install two memory modules in the slots under the bottom

cover first. Then install the third and fourth memory modules in the slots under the keyboard.

• Your computer supports up to 128 GB memory module in total, and it is recommended that you use

memory modules with the same capacity and speed for best dual-channel memory performance.

• Replace only with a memory module of the type recommended by Lenovo.

1040 Keyboard and keyboard sub board

For access, remove these FRUs:

• “1010 Bottom door” on page 75

Notes:

• You might be instructed to slide the keyboard frame forward or backward in some of the following steps.

In this case, ensure that you do not press or hold the keys while sliding the keyboard frame. Otherwise,

the keyboard frame cannot be moved.

Removal steps of the keyboard

Notes:

• Depending on the model, your computer might look different from the illustrations in this topic.

78 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Chapter 9.Removing or replacing a FRU 79

Removal steps of the keyboard sub board (for P17 Gen 2)

Step Screw (quantity) Color Torque

5M2 × 3 mm, flat-head, nylon-coated (2) black 0.181 Nm

(1.85 kgf-cm)

1050 Memory module bracket

For access, remove these FRUs:

80 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

• “1040 Keyboard and keyboard sub board” on page 78

Removal steps of the memory module bracket

Step Screw (quantity) Color Torque

1M2 × 2.5 mm, flat-head, nylon-coated (3) Black 0.181 Nm

(1.85 kgf-cm)

Installation steps of the memory module bracket

Note: When installing the memory module bracket, ensure that the thermal pad is attached to the back of

the bracket.

Chapter 9.Removing or replacing a FRU 81

1060 M.2 solid-state drive under the keyboard

For access, remove these FRUs:

• “1050 Memory module bracket” on page 80

Attention:

• If your computer is installed with a hybrid solid-state drive (with Intel Optane memory), go to https://

support.lenovo.com/docs/tg_ssd to know the details on how to replace it.

The M.2 solid-state drive is sensitive. Inappropriate handling might cause damage and permanent loss of

data.

When handling the M.2 solid-state drive, observe the following guidelines:

• Replace the M.2 solid-state drive only for upgrade or repair. The M.2 solid-state drive is not designed for

frequent changes or replacement.

• Before replacing the M.2 solid-state drive, make a backup copy of all the data that you want to keep.

• Do not apply pressure to the M.2 solid-state drive.

• Do not touch the contact edge or circuit board of the M.2 solid-state drive. Otherwise, the M.2 solid-state

drive might get damaged.

• Do not make the M.2 solid-state drive subject to physical shocks or vibration. Put the M.2 solid-state drive

on a soft material, such as cloth, to absorb physical shocks.

82 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal procedure

1070 Memory module under the keyboard

For access, remove these FRUs:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

• “1050 Memory module bracket” on page 80

Removal steps of the memory module under the keyboard

Chapter 9.Removing or replacing a FRU 83

Installation steps of the memory module under the keyboard

When installing:

• If you install only one memory module, install it into the bottom slot.

• Ensure that the memory module is firmly installed in the slot and does not move easily.

84 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Important notice about memory module installation

Your computer comes with four memory module slots, and supports up to 128 GB memory module in total.

Slot a and slot b are under the bottom door, and slot c and slot d are under the keyboard. When installing

or replacing a memory module, use the following guidelines for better performance:

Important: It is recommended that you follow below installation rules. Otherwise, the computer might either

not start or not perform well.

• To install one or two memory modules in total, install it/them in the slots under the bottom cover. Do not

install it/them in the slots under the keyboard.

• To install three or four memory modules in total, install two memory modules in the slots under the bottom

cover first. Then install the third and fourth memory modules in the slots under the keyboard.

• Your computer supports up to 128 GB memory module in total, and it is recommended that you use

memory modules with the same capacity and speed for best dual-channel memory performance.

• Replace only with a memory module of the type recommended by Lenovo.

1080 Wireless LAN card (for P15 Gen 2 and T15g Gen 2)

For access, remove these FRUs in order:

• “1040 Keyboard and keyboard sub board” on page 78

Removal steps of the wireless LAN card

Chapter 9.Removing or replacing a FRU 85

Step Screw (quantity) Color Torque

1M2 × 3 mm, flat-head, nylon-coated (1) black 0.181 Nm

(1.85 kgf-cm)

1090 Wireless WAN card

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

Removal steps of the wireless WAN card

Step Screw (quantity) Color Torque

3M2 × 3 mm, flat-head, nylon-coated (1) black 0.181 Nm

(1.85 kgf-cm)

When installing:

Plug the gray cable into the main connector on the card; and plug the black cable into the auxiliary connector

on the card.

1100 Keyboard bezel assembly

For access, remove these FRUs:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

Removal steps of the keyboard bezel assembly

86 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Note: If the elastic adhesive tape gets damaged when servicing another part, remember to apply a new one.

Chapter 9.Removing or replacing a FRU 87

When installing:

Ensure that all the latches are well assembled and there is no abnormal gap.

Installation steps of the keyboard bezel assembly

For P15/T15g Gen 2

88 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

For P17 Gen 2

Note: If the elastic adhesive tape gets damaged when servicing another part, remember to apply a new one.

1110 Power button board with cable

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

Chapter 9.Removing or replacing a FRU 89

Removal steps of the power button board with cable

Step Screw (quantity) Color Torque

2M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm

(1.85 kgf-cm)

When installing:

Ensure that the connector is attached firmly.

1120 Fingerprint reader cable, bracket and board

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

90 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the fingerprint reader cable, bracket and board

When installing:

Ensure that the connector is attached firmly.

1120 Wireless LAN card (for P17 Gen 2)

For access, remove these FRUs in order:

• “1040 Keyboard and keyboard sub board” on page 78

Chapter 9.Removing or replacing a FRU 91

Removal steps of the wireless LAN card

Step Screw (quantity) Color Torque

1M2 × 3 mm, flat-head, nylon-coated (1) black 0.181 Nm

(1.85 kgf-cm)

1130 Speaker assembly

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

Removal steps of the speaker assembly

Step Screw (quantity) Color Torque

3M2 x 3 mm, flat-head, nylon-coated (2) black 0.181 Nm

(1.85 kgf-cm)

1140 Smart card reader and smart card reader cable

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

92 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the smart card reader

Step Screw (quantity) Color Torque

1M2 × 3 mm, flat-head, nylon-coated (2) Black 0.181 Nm

(1.85 kgf-cm)

When installing:

Ensure that the connector is attached firmly.

Removal steps of the smart card reader cable

For access, remove these FRUs:

• “1010 Bottom door” on page 75

• “1160 Base cover assembly” on page 95

• “1170 Built-in battery” on page 98

Chapter 9.Removing or replacing a FRU 93

1150 MIMO wireless-WAN antenna assembly with cable (for P15/T15g

Gen 2)

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

Removal steps of the MIMO wireless-WAN antenna assembly with cable

94 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

1150 MIMO wireless-WAN antenna assembly with cable(for P17 Gen 2)

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

Removal steps of the MIMO wireless-WAN antenna assembly with cable

1160 Base cover assembly

For access, remove these FRUs:

• “1010 Bottom door” on page 75

Chapter 9.Removing or replacing a FRU 95

Removal steps of the base cover assembly

Label locations on the base cover assembly

The following illustration shows the location of each label (for ThinkPad P15/T15g Gen 2).

1 Asset tag label

96 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

2 GEO label 3 Win10 COA label

4 IMEI label 5 Country label

6 Serial number label 7 Genuine Microsoft label (GML)

The following illustration shows the location of each label (for ThinkPad P17 Gen 2).

1 Asset tag label

Chapter 9.Removing or replacing a FRU 97

2 GEO label 3 IMEI label

4 Country label 5 Win10 COA label

6 Serial number label 7 Genuine Microsoft label (GML)

1170 Built-in battery

For access, remove these FRUs:

• “1160 Base cover assembly” on page 95

Important notices for replacing a battery

Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and

provides no warranties for failures or damage arising out of their use.

Removal steps of the built-in battery

DANGER

Use only the authorized battery specified for your computer. Any other battery could ignite or

explode.

When installing:

98 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Ensure that the connector is attached firmly.

Step Screw (quantity) Color Torque

2M2 × 8 mm, flat-head, nylon-coated (3) Black 0.181 Nm

(1.85 kgf-cm)

1180 Coin-cell battery

For access, remove these FRUs:

• “1160 Base cover assembly” on page 95

DANGER

Use only the authorized battery specified for your computer. Any other battery could ignite or

explode.

Removal steps of the coin-cell battery

When installing:

Ensure that the coin-cell battery connector is attached firmly.

1190 Trackpad and trackpad cable

For access, remove these FRUs in order:

• “1160 Base cover assembly” on page 95

• “1170 Built-in battery” on page 98

Chapter 9.Removing or replacing a FRU 99

Removal steps of the trackpad and trackpad cable

Step Screw (quantity) Color Torque

4M2 × 2 mm, flat-head, nylon-coated (4) Black 0.181 Nm

(1.85 kgf-cm)

When installing:

Ensure that the connector is attached firmly.

100 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

1200 Hinge caps

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

• “1160 Base cover assembly” on page 95

Removal steps of the hinge caps

Step Screw (quantity) Color Torque

1M2.5 × 8 mm, flat-head, nylon-coated (2) Black 0.294 Nm

(3.0 kgf-cm)

1210 LCD unit

For access, remove these FRUs:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

• “1160 Base cover assembly” on page 95

• “1200 Hinge caps” on page 101

Chapter 9.Removing or replacing a FRU 101

Removal steps of the LCD unit

Step Screw (quantity) Color Torque

1M 2.5 × 8 mm, flat-head, nylon-coated (4) Black 0.294 Nm

(3.0 kgf-cm)

102 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

When installing:

Ensure that you route the cables firmly and tape up in the proper positions.

Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause

the cables to be damaged by the cable guides, or a wire to be broken.

1220 Thermal fan assembly

For access, remove these FRUs:

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

• “1160 Base cover assembly” on page 95

Removal steps of the thermal fan assembly

Detach the thermal fan assembly connector.

Loosen the screws in ascending alphabetical order (2a to 2g) as illustrated, and then remove the thermal fan

assembly.

Chapter 9.Removing or replacing a FRU 103

2f 2i

2g 2a

When installing:

• Do not touch the areas marked a and b in the following illustrations.

• Ensure that the fan connector is attached firmly.

• Each screw is marked with a number on the thermal fan assembly. When installing, follow the screw

number to tighten the screws in ascending numerical order; otherwise, the system board assembly might

be damaged.

• If you want to re-use the old thermal fan assembly, remove the thermal grease first, and then apply new

thermal grease to the thermal fan assembly, at an amount of 0.2 grams, before you attach it to the system

board. Either too much or too less application of grease can cause a thermal problem due to imperfect

contact with a component.

1230 GPU board

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1160 Base cover assembly” on page 95

• “1220 Thermal fan assembly” on page 103

104 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the GPU board

Step Screw (quantity) Color 94Torque

1M2 × 8 mm, flat-head, nylon-coated (3) Black 0.181 Nm

(1.85 kgf-cm)

When installing:

Ensure that the connector is attached firmly.

1240 System board

Important notices for handling the system board

When handling the system board, read the following:

• The system board has an accelerometer, which can be broken when several thousands of G-forces are

applied.

Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench

can subject the accelerometer to as much as 6000 G's of shock.

• Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or

composite.

• Avoid rough handling of any kind.

• At every point in the process, be sure not to drop or stack the system board.

• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a

corrugated conductive material.

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1020 M.2 solid-state drive” on page 75

• “1030 Memory module under the bottom cover” on page 76

• “1040 Keyboard and keyboard sub board” on page 78

• “1070 Memory module under the keyboard” on page 83

• “1150 MIMO wireless-WAN antenna assembly with cable(for P17 Gen 2)” on page 95

• “1180 Coin-cell battery” on page 99

• “1160 Base cover assembly” on page 95

• “1180 Coin-cell battery” on page 99

• “1220 Thermal fan assembly” on page 103

• “1230 GPU board” on page 104

Chapter 9.Removing or replacing a FRU 105

The following components soldered on the top side of the system board is extremely sensitive. When you

service the system board, avoid any kind of rough handling.

a Graphic Processing Unit (GPU)

b Central Processing Unit (CPU)

c Accelerometer chip for the storage Active Protection System ® (APS)

d Platform Controller Hub (PCH)

Removal steps of the system board

106 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Step Screw (quantity) Color Torque

13 M2 × 3 mm, flat-head, nylon-coated (4) Black 0.181 Nm

(1.85 kgf-cm)

1250 dc-in bracket and dc-in cable assembly

The base cover assembly will stand out after you remove these FRUs in order:

• “1240 System board” on page 105

Chapter 9.Removing or replacing a FRU 107

Removal steps of the dc-in bracket and dc-in cable assembly

Step Screw (quantity) Color Torque

1M2 × 2.5 mm, flat-head, nylon-coated (2) Black 0.181 Nm

(1.85 kgf-cm)

1260 I/O board and I/O board cable

For access, remove these FRUs:

• “1010 Bottom door” on page 75

• “1160 Base cover assembly” on page 95

Removal steps of the I/O board and I/O board cable

108 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Step Screw (quantity) Color Torque

1M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm

(1.85 kgf-cm)

When installing:

Ensure that the connector is attached firmly.

1270 Chassis assembly

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1040 Keyboard and keyboard sub board” on page 78

• “1100 Keyboard bezel assembly” on page 86

• “1130 Speaker assembly” on page 92

• “1140 Smart card reader and smart card reader cable” on page 92

• “1150 MIMO wireless-WAN antenna assembly with cable(for P17 Gen 2)” on page 95

• “1160 Base cover assembly” on page 95

• “1170 Built-in battery” on page 98

• “1190 Trackpad and trackpad cable” on page 99

• “1200 Hinge caps” on page 101

• “1210 LCD unit” on page 101

• “1220 Thermal fan assembly” on page 103

• “1230 GPU board” on page 104

• “1240 System board” on page 105

• “1250 dc-in bracket and dc-in cable assembly” on page 107

• “1260 I/O board and I/O board cable” on page 108

Remove an LCD FRU for non-touch models (for P15/T15g Gen 2)

This section provides instructions on how to remove an LCD FRU for models without touch feature.

2010 LCD bezel assembly

For access, remove this FRU:

• “1210 LCD unit” on page 101

Chapter 9.Removing or replacing a FRU 109

Removal steps of the LCD bezel assembly

When installing:

Ensure that all the latches are attached firmly.

2020 LCD panel and LCD cable

For access, remove these FRUs in order:

• “2010 LCD bezel assembly” on page 109

Removal steps of the LCD panel and LCD cable

110 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

When installing:

Ensure that the LCD connector is attached firmly.

Installation steps of the LCD panel and the LCD cable (for UHD LCD panel models)

1. Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct

locations. Peel off the release liners from the other side of the tapes. Ensure that four tapes are applied

correctly as shown.

Chapter 9.Removing or replacing a FRU 111

2. Attach the LCD cable to the LCD panel as shown. Turn over the LCD panel to secure the LCD panel with

tapes.

2030 Hinge assembly

For access, remove these FRUs in order:

• “2010 LCD bezel assembly” on page 109

Removal steps of the hinge assembly

Step Screw (quantity) Color Torque

1M 2.5 ×3.5 mm, flat-head, nylon-coated (6) Black 0.294 Nm

(3.0 kgf-cm)

2M 2 × 2.5 mm, flat-head, nylon-coated (2) Silver 0.181 Nm

(1.85 kgf-cm)

2040 Camera/microphone module

For access, remove these FRUs:

• “1210 LCD unit” on page 101

• “2010 LCD bezel assembly” on page 109

112 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

• “2020 LCD panel and LCD cable” on page 110

Removal steps of the conventional camera/microphone module

Removal steps of the infrared camera/microphone module

Chapter 9.Removing or replacing a FRU 113

Removal steps of the camera/LED cable assembly

When installing:

Ensure that the connectors are attached firmly.

2050 Antenna kit

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “2010 LCD bezel assembly” on page 109

• “2020 LCD panel and LCD cable” on page 110

114 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the antenna kit and LCD rear cover assembly

Cable routing:

When you install the antenna kit, route the cables as shown in the following illustration.

Chapter 9.Removing or replacing a FRU 115

a Wireless LAN auxiliary antenna (black)

b Wireless WAN main antenna (orange)

c Wireless WAN auxiliary antenna (blue)

d Wireless LAN main antenna (grey)

Attention: As you route the cables, ensure that they are not subject to any tension. Tension could cause the

cables to be damaged by the cable guides, or a wire to be broken.

2060 LCD rear cover assembly

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “2010 LCD bezel assembly” on page 109

• “2020 LCD panel and LCD cable” on page 110

• “2040 Camera/microphone module” on page 112

• “2050 Antenna kit” on page 114

Removing an LCD FRU for touch models (for P15/T15g Gen 2)

This section provides instructions on how to remove an LCD FRU for models without touch feature.

3010 LCD strip bezel

For access, remove this FRU:

• “1210 LCD unit” on page 101

116 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the LCD strip bezel

When installing:

Ensure that all the latches are attached firmly.

3020 LCD panel assembly, LCD cable, and hinge assembly

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “3010 LCD strip bezel” on page 116

Removal steps of the LCD panel assembly

Step Screw (quantity) Color Torque

3M2.5 × 4 mm, flat-head, nylon-coated (2) Silver 0.294 Nm

(3.0 kgf-cm)

Chapter 9.Removing or replacing a FRU 117

When installing:

Ensure that the LCD connector is attached firmly.

Installation steps of the LCD panel and the LCD cable (for UHD LCD panel models)

1. Attach the LCD cable to the LCD panel as shown.

118 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

2. Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct

locations as shown. Peel off the release liners from the other side of the tapes. Ensure that two tapes are

applied correctly as shown.

3. Peel off the release liners from one side of the new sponges. Apply the sponges to the correct locations

as shown. Peel off the release liners from the other side of the sponges. Ensure that two sponges are

applied correctly as shown.

4. Attach the LCD panel to the LCD cover.

Chapter 9.Removing or replacing a FRU 119

5. Secure the LCD panel with two screws and pull out the liners of the elastic adhesive tapes.

Removal steps of the hinge assembly

120 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Step Screw (quantity) Color Torque

1M2.5 × 3.5 mm, flat-head, nylon-coated (4) black 0.294 Nm

(3.0 kgf-cm)

2M2 × 2.5 mm, flat-head, nylon-coated (2) Silver 0.181 Nm

(1.85 kgf-cm)

3030 Hinge assembly

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “3010 LCD strip bezel” on page 116

Removal steps of the hinge assembly

Step Screw (quantity) Color Torque

1M2.5 × 3.5 mm, flat-head, nylon-coated (4) black 0.294 Nm

(3.0 kgf-cm)

2M2 × 2.5 mm, flat-head, nylon-coated (2) Silver 0.181 Nm

(1.85 kgf-cm)

3040 Camera/microphone module

For access, remove these FRUs:

• “1210 LCD unit” on page 101

• “3010 LCD strip bezel” on page 116

• “3020 LCD panel assembly, LCD cable, and hinge assembly” on page 117

Chapter 9.Removing or replacing a FRU 121

Removal steps of the infrared camera/microphone module

Removal steps of the infrared camera/LED cable assembly

122 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

3050 Antenna kit

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “3010 LCD strip bezel” on page 116

• “3020 LCD panel assembly, LCD cable, and hinge assembly” on page 117

Attention: As you route the cables, ensure that they are not subject to any tension. Tension could cause the

cables to be damaged by the cable guides, or a wire to be broken.

Chapter 9.Removing or replacing a FRU 123

Antenna locations

a. Wireless LAN antenna (auxiliary)

b. Wireless WAN antenna (main, for selected models)

c. Wireless WAN antenna (auxiliary, for selected models)

d. Wireless LAN antenna (main)

3060 LCD rear cover assembly

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “3010 LCD strip bezel” on page 116

• “3020 LCD panel assembly, LCD cable, and hinge assembly” on page 117

• “3040 Camera/microphone module” on page 121

• “3050 Antenna kit” on page 123

Removing an LCD FRU (for P17 Gen 2)

This section provides instructions on how to remove an LCD FRU for models without touch feature.

4010 LCD strip cover and LCD bezel assembly

For access, remove this FRU:

• “1210 LCD unit” on page 101

124 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of LCD strip cover and LCD bezel assembly

Step Screw (quantity) Color Torque

2M2.5 × 7 mm, flat-head, nylon-coated (2) Black 0.294 Nm

(3.0 kgf-cm)

When installing:

Ensure that all the latches are attached firmly.

4020 LCD panel and LCD cable

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “4010 LCD strip cover and LCD bezel assembly” on page 124

Removal steps of the LCD panel and LCD cable (for UHD LCD panel models)

1. Grasp the end of four elastic adhesive tapes with tweezers. Pull out each tape slowly in the direction as

shown until two elastic tapes are all released from LCD unit 1.

Note: Do not pull the tapes too fast, otherwise, the tapes might snap.

Chapter 9.Removing or replacing a FRU 125

126 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Installation steps of the LCD panel and the LCD cable (for UHD LCD panel models)

1. Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct

locations. Peel off the release liners from the other side of the tapes. Ensure that four tapes are applied

correctly as shown.

2. Attach the LCD cable to the LCD panel as shown. Turn over the LCD panel to secure the LCD panel with

tapes.

Chapter 9.Removing or replacing a FRU 127

Removal steps of the LCD panel and LCD cable (for FHD LCD panel models)

Step Screw (quantity) Color Torque

1M2 × 3 mm, flat-head, nylon-coated (4) black 0.181 Nm

(1.85 kgf-cm)

Notes: For LCD panel with the factory color calibration feature, do the following to install new color profiles

after installing a new LCD panel:

1. Connect your computer to a network and close the X-Rite Color Assistant program.

2. Go to C:\Program files (x86)\X-Rite Color Assistant and locate the

ProfileUpdaterForDisplayReplacement exe file.

3. Double-click the EXE file. Follow the on-screen instructions to input the display serial number and click

Submit. You can find the display serial number and instructions on a sticker affixed to the front of the

new LCD part. When the new color profiles are installed successfully, a prompted window will be

displayed.

4030 LCD hinge assembly

For access, remove these FRUs in order:

• “1210 LCD unit” on page 101

• “4010 LCD strip cover and LCD bezel assembly” on page 124

• “4020 LCD panel and LCD cable” on page 125

128 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the hinge assembly (for UHD LCD panel models)

Step Screw (quantity) Color Torque

2M2 × 3 mm, flat-head, nylon-coated (2) Black 0.181 Nm

(1.85 kgf-cm)

3M2.5 × 3.5 mm, flat-head, nylon-coated (4) Black 0.294 Nm

(3.0 kgf-cm)

Chapter 9.Removing or replacing a FRU 129

Removal steps of the hinge assembly (for FHD LCD panel models)

Step Screw (quantity) Color Torque

2M2.5 × 3.5 mm, flat-head, nylon-coated (4) Black 0.294 Nm

(3.0 kgf-cm)

4040 Camera and LED camera cable assembly

For access, remove these FRUs:

• “1210 LCD unit” on page 101

• “4010 LCD strip cover and LCD bezel assembly” on page 124

• “4020 LCD panel and LCD cable” on page 125

130 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Removal steps of the camera card

Removal steps of the LED/camera cable assembly

When installing:

Ensure that the connectors are attached firmly.

4050 Camera bracket

For access, remove these FRUs:

• “1210 LCD unit” on page 101

• “4010 LCD strip cover and LCD bezel assembly” on page 124

• “4020 LCD panel and LCD cable” on page 125

Chapter 9.Removing or replacing a FRU 131

Removal steps of the camera card

Step Screw (quantity) Color Torque

1M 2 ×2.5 mm, flat-head, nylon-coated (2) Black 0.181 Nm

(1.85 kgf-cm)

4060 Antenna kit

For access, remove these FRUs in order:

• “4010 LCD strip cover and LCD bezel assembly” on page 124

• “4020 LCD panel and LCD cable” on page 125

Removal steps of the antenna kit and LCD rear cover assembly

Cable routing:

When you install the antenna kit, route the cables as shown in the following illustration.

132 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

a Wireless LAN auxiliary antenna (black)

b Wireless WAN main antenna (orange)

c Wireless WAN auxiliary antenna (blue)

d Wireless LAN main antenna (grey)

Attention: As you route the cables, ensure that they are not subject to any tension. Tension could cause the

cables to be damaged by the cable guides, or a wire to be broken.

4070 LCD rear cover assembly

For access, remove these FRUs in order:

• “1010 Bottom door” on page 75

• “1160 Base cover assembly” on page 95

• “1210 LCD unit” on page 101

• “4010 LCD strip cover and LCD bezel assembly” on page 124

• “4020 LCD panel and LCD cable” on page 125

• “4030 LCD hinge assembly” on page 128

• “4040 Camera and LED camera cable assembly” on page 130

• “4060 Antenna kit” on page 132

Chapter 9.Removing or replacing a FRU 133

134 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Appendix A. 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.

1009 Think Place - Building One

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 product(s) and/or the program(s) 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.

Notices and trademarks

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 programs 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.

Changes are made periodically to the information herein; these changes will be incorporated in new editions

of the publication. To provide better service, Lenovo reserves the right to improve and/or modify the

products and software programs described in the manuals included with your computer, and the content of

the manual, at any time without additional notice.

The software interface and function and hardware configuration described in the manuals included with your

computer might not match exactly the actual configuration of the computer that you purchase. For the

configuration of the product, refer to the related contract (if any) or product packing list, or consult the

distributor for the product sales. Lenovo may use or distribute any of the information you supply in any way it

believes appropriate without incurring any obligation to you.

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

136 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

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.

This document is copyrighted by Lenovo and is not covered by any open source license, including any

Linux® agreement(s) which may accompany software included with this product. Lenovo may update this

document at any time without notice.

For the latest information or any questions or comments, contact or visit the Lenovo Web site:

https://pcsupport.lenovo.com

Trademarks

LENOVO, LENOVO logo, THINKPAD, THINKPAD logo, and TRACKPOINT are trademarks of Lenovo. Intel,

and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries.

Linux is the registered trademark of Linus Torvalds in the U.S. and other countries. Microsoft and Windows

are trademarks of the Microsoft group of companies. The terms HDMI and HDMI High-Definition Multimedia

Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other

countries. USB-C is a registered trademark of USB Implementers Forum. Wi-Fi is a registered trademark of

Appendix A. Notices 137

138 P15 Gen 2, T15g Gen 2, and P17 Gen 2 Hardware Maintenance Manual

Part Number: SP40G77000

Printed in China

(1P) P/N: SP40G77000

*1PSP40G77000*

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Lenovo T15g User Manual

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