Dell Precision 3431 Small Form Factor Service Manual
Working on your computer
Technology and components
Major components of your system
Removing and Installing components
Troubleshooting your computer
Getting help
- Contacting Dell
Dust Filter for Dell Precision 3431 Small Form Factor
Installing the USB Type-C card
Installing the VGA card
Cable cover for Dell Precision 3431 Small Form Factor

DELL 3431 User Manual

Displayed below is the user manual for 3431 by DELL which is a product in the PCs/Workstations category. This manual has pages.

Related Manuals

DELL 3431 Manual

Dell Precision 3431 Small Form Factor

Service Manual

Regulatory Model: D11S

Regulatory Type: D11S004

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the

problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

Other trademarks may be trademarks of their respective owners.

2020 - 01

Rev. A01

1 Working on your computer............................................................................................................ 6

Safety instructions.................................................................................................................................................................6

Turning off your computer — Windows 10....................................................................................................................... 6

Before working inside your computer................................................................................................................................. 7

After working inside your computer.................................................................................................................................... 7

2 Technology and components......................................................................................................... 8

Processor................................................................................................................................................................................8

DDR4....................................................................................................................................................................................... 9

USB features........................................................................................................................................................................ 10

USB Type-C...........................................................................................................................................................................11

HDMI 2.0............................................................................................................................................................................... 13

Advantages of DisplayPort over USB Type-C..................................................................................................................14

3 Major components of your system ............................................................................................... 15

4 Removing and Installing components............................................................................................ 17

Recommended tools............................................................................................................................................................ 17

Screw size list....................................................................................................................................................................... 18

Motherboard layout............................................................................................................................................................. 19

Side cover............................................................................................................................................................................. 19

Removing the side cover...............................................................................................................................................19

Installing the side cover................................................................................................................................................ 20

Expansion card......................................................................................................................................................................21

Removing expansion card............................................................................................................................................. 21

Installing the expansion card........................................................................................................................................ 22

Coin cell battery...................................................................................................................................................................23

Removing coin cell battery........................................................................................................................................... 23

Installing the coin cell battery.......................................................................................................................................24

Hard drive assembly............................................................................................................................................................25

Removing the hard drive assembly............................................................................................................................. 25

Installing the hard drive assembly................................................................................................................................ 27

Front Bezel........................................................................................................................................................................... 28

Removing front bezel....................................................................................................................................................28

Installing front bezel...................................................................................................................................................... 29

Hard drive and optical drive module..................................................................................................................................30

Removing the hard drive and optical drive module...................................................................................................30

Installing the hard drive and optical drive module......................................................................................................32

Optical drive......................................................................................................................................................................... 35

Removing the optical drive...........................................................................................................................................35

Installing the optical drive............................................................................................................................................. 38

Memory module....................................................................................................................................................................41

Removing memory module............................................................................................................................................41

Installing the memory module...................................................................................................................................... 42

Contents

Contents 3

Heat sink and fan.................................................................................................................................................................43

Removing heat sink and heat sink fan........................................................................................................................ 43

Installing heat sink and heat sink fan...........................................................................................................................44

Intrusion switch....................................................................................................................................................................46

Removing intrusion switch........................................................................................................................................... 46

Installing the intrusion switch.......................................................................................................................................46

Power switch....................................................................................................................................................................... 47

Removing power switch............................................................................................................................................... 47

Installing the power switch...........................................................................................................................................48

Processor..............................................................................................................................................................................49

Removing processor......................................................................................................................................................49

Installing the processor.................................................................................................................................................50

M.2 PCIe Solid State Drive -SSD ......................................................................................................................................51

Removing the M.2 PCIe Solid State Drive -SSD........................................................................................................51

Installing the M.2 PCIe Solid State Drive -SSD......................................................................................................... 52

Intel Optane card.................................................................................................................................................................53

Removing the Intel Optane card..................................................................................................................................53

Installing the Intel Optane card.................................................................................................................................... 54

SD card reader - optional................................................................................................................................................... 55

Removing the SD card reader..................................................................................................................................... 55

Installing the SD card reader........................................................................................................................................56

Internal Antenna - optional................................................................................................................................................. 57

Removing the Internal Antenna................................................................................................................................... 57

Installing the Internal Antenna..................................................................................................................................... 60

External Antenna - optional................................................................................................................................................65

Removing the External Antenna..................................................................................................................................65

Installing the External Antenna.................................................................................................................................... 68

M.2 2230 WLAN card - optional........................................................................................................................................73

Removing the M.2 2230 WLAN card..........................................................................................................................73

Installing the M.2 2230 WLAN card............................................................................................................................ 74

Power supply unit................................................................................................................................................................ 75

Removing power supply unit or PSU.......................................................................................................................... 75

Installing the power supply unit or PSU...................................................................................................................... 77

Speaker................................................................................................................................................................................. 79

Removing speaker......................................................................................................................................................... 79

Installing the speaker.....................................................................................................................................................80

System fan............................................................................................................................................................................ 81

Removing the system fan............................................................................................................................................. 81

Installing the system fan............................................................................................................................................... 82

System board.......................................................................................................................................................................83

Removing system board............................................................................................................................................... 83

Installing the system board...........................................................................................................................................87

5 Troubleshooting your computer...................................................................................................90

Enhanced Pre-Boot System Assessment — ePSA diagnostics................................................................................... 90

Running the ePSA Diagnostics.................................................................................................................................... 90

Diagnostics........................................................................................................................................................................... 90

Diagnostic error messages................................................................................................................................................. 92

System error messages...................................................................................................................................................... 95

4Contents

6 Getting help...............................................................................................................................96

Contacting Dell.................................................................................................................................................................... 96

A Dust Filter for Dell Precision 3431 Small Form Factor ....................................................................97

B Installing the USB Type-C card................................................................................................... 99

C Installing the VGA card.............................................................................................................. 112

D Cable cover for Dell Precision 3431 Small Form Factor................................................................. 125

Contents 5

Working on your computer

Topics:

•Safety instructions

•Turning off your computer — Windows 10

•Before working inside your computer

•After working inside your computer

Safety instructions

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise

noted, each procedure included in this document assumes that the following conditions exist:

• You have read the safety information that shipped with your computer.

• A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.

NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the

computer, replace all covers, panels, and screws before connecting to the power source.

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For

additional safety best practices information, see the Regulatory Compliance Homepage

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and

simple repairs as authorized in your product documentation, or as directed by the online or telephone service and

support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow

the safety instructions that came with the product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching

an unpainted metal surface at the same time as touching a connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by

its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables

have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you

disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also,

before you connect a cable, ensure that both connectors are correctly oriented and aligned.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on

if the side cover is removed.

CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on

if the side cover is removed.

CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on

if the side cover is removed.

Turning off your computer — Windows 10

CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your

computer or remove the side cover.

6 Working on your computer

1. Click or tap .

2. Click or tap and then click or tap Shut down.

NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did

not automatically turn off when you shut down your operating system, press and hold the power button for about 6

seconds to turn them off.

Before working inside your computer

To avoid damaging your computer, perform the following steps before you begin working inside the computer.

1. Ensure that you follow the Safety Instruction.

2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.

3. Turn off your computer.

4. Disconnect all network cables from the computer.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from

the network device.

5. Disconnect your computer and all attached devices from their electrical outlets.

6. Press and hold the power button while the computer is unplugged to ground the system board.

NOTE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching

an unpainted metal surface at the same time as touching a connector on the back of the computer.

After working inside your computer

After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your

computer.

1. Connect any telephone or network cables to your computer.

CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the

computer.

2. Connect your computer and all attached devices to their electrical outlets.

3. Turn on your computer.

4. If required, verify that the computer works correctly by running ePSA diagnostics.

Working on your computer 7

Technology and components

This chapter details the technology and components available in the system.

Topics:

•Processor

•DDR4

•USB features

•USB Type-C

•HDMI 2.0

•Advantages of DisplayPort over USB Type-C

Processor

NOTE: Processor numbers are not a measure of performance. Processor availability is subject to change and may vary

by region/country.

Table 1. 9th Generation Intel Core Processor specifications

Type UMA Graphics

lntel Core Processor i3 - 9300 (4

Cores/8MB/4T/up to 4.3GHz/65W)

Intel UHD Graphics 630

lntel Core Processor i5 - 9500 (6

Cores/9MB/6T/up to 4.4GHz/65W)

Intel UHD Graphics 630

Intel Core Processor 5 - 9600 (6

Cores/9MB/6T/up to 4.6GHz/95W)

Intel UHD Graphics 630

Intel Core Processor i7 - 9700 (8 Cores/

12MB/8T/up to 4.9GHz/95W)

Intel UHD Graphics 630

Intel Core Processor i9 - 9900 (8 Cores/

16MB/16T/up to 5.0GHz/95W)

Intel UHD Graphics 630

Intel Pentium Gold G5420 (2 Cores, 4MB

Cache, 3.8GHz)

Intel UHD Graphics 630

Intel Xeon E Processor E-2224 (4 Core,

8MB Cache, 3.4GHz, 4.6GHz Turbo)

Intel Xeon E Processor E-2224G (4 Core,

8MB Cache, 3.5GHz, 4.7GHz Turbo)

Intel UHD Graphics 630

Intel Xeon E Processor E-2236 (6 Core,

8MB Cache, 3.4GHz, 4.8GHz Turbo)

Intel Xeon E Processor E-2236G (6 Core,

8MB Cache, 3.6GHz, 4.8GHz Turbo)

Intel UHD Graphics 630

Table 2. 8th Generation Intel Core Processor specifications

Type UMA Graphics

Intel Xeon E Processor E-2174G (4 Core HT,

8MB Cache, 3.8GHz, 4.7GHz)

Intel UHD Graphics 630

Intel Core Processor i7-8700 (6 Core, 12MB

Cache, 3.20GHz, 4.6GHz )

Intel UHD Graphics 630

8 Technology and components

DDR4

DDR4 (double data rate fourth generation) memory is a higher-speed successor to the DDR2 and DDR3 technologies and allows up to 512

GB in capacity, compared to the DDR3's maximum of 128 GB per DIMM. DDR4 synchronous dynamic random-access memory is keyed

differently from both SDRAM and DDR to prevent the user from installing the wrong type of memory into the system.

DDR4 needs 20 percent less or just 1.2 volts, compared to DDR3 which requires 1.5 volts of electrical power to operate. DDR4 also

supports a new, deep power-down mode that allows the host device to go into standby without needing to refresh its memory. Deep

power-down mode is expected to reduce standby power consumption by 40 to 50 percent.

DDR4 Details

There are subtle differences between DDR3 and DDR4 memory modules, as listed below.

Key notch difference

The key notch on a DDR4 module is in a different location from the key notch on a DDR3 module. Both notches are on the insertion edge

but the notch location on the DDR4 is slightly different, to prevent the module from being installed into an incompatible board or platform.

Figure 1. Notch difference

Increased thickness

DDR4 modules are slightly thicker than DDR3, to accommodate more signal layers.

Figure 2. Thickness difference

Curved edge

DDR4 modules feature a curved edge to help with insertion and alleviate stress on the PCB during memory installation.

Figure 3. Curved edge

Technology and components 9

Memory Errors

Memory errors on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not

turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the

system or under the keyboard, as in some portable systems.

NOTE: The DDR4 memory is imbedded in board and not a replaceable DIMM as shown and referred.

USB features

Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral

devices like mice, keyboards, external drivers, and printers.

Table 3. USB evolution

Type Data Transfer Rate Category Introduction Year

USB 2.0 480 Mbps High Speed 2000

USB 3.0/USB 3.1 Gen 1

Port

5 Gbps SuperSpeed 2010

USB 3.1 Gen 2 10 Gbps SuperSpeed 2013

USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)

For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and

yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands. The USB 3.0/USB 3.1 Gen 1

finally has the answer to the consumers' demands with a theoretically 10 times faster than its predecessor. In a nutshell, USB 3.1 Gen 1

features are as follows:

• Higher transfer rates (up to 5 Gbps)

• Increased maximum bus power and increased device current draw to better accommodate power-hungry devices

• New power management features

• Full-duplex data transfers and support for new transfer types

• Backward USB 2.0 compatibility

• New connectors and cable

The topics below cover some of the most commonly asked questions regarding USB 3.0/USB 3.1 Gen 1.

Speed

Currently, there are 3 speed modes defined by the latest USB 3.0/USB 3.1 Gen 1 specification. They are Super-Speed, Hi-Speed and Full-

Speed. The new SuperSpeed mode has a transfer rate of 4.8 Gbps. While the specification retains Hi-Speed, and Full-Speed USB mode,

commonly known as USB 2.0 and 1.1 respectively, the slower modes still operate at 480 Mbps and 12 Mbps respectively and are kept to

maintain backward compatibility.

USB 3.0/USB 3.1 Gen 1 achieves the much higher performance by the technical changes below:

• An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below).

• USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two

pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.

• USB 3.0/USB 3.1 Gen 1 utilizes the bidirectional data interface, rather than USB 2.0's half-duplex arrangement. This gives a 10-fold

increase in theoretical bandwidth.

10 Technology and components

With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high

megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the

480Mbps theoretical maximum throughput, making data transfer at around 320 Mbps (40 MB/s) — the actual real-world maximum.

Similarly, USB 3.0/USB 3.1 Gen 1 connections will never achieve 4.8Gbps. We will likely see a real-world maximum rate of 400MB/s with

overheads. At this speed, USB 3.0/USB 3.1 Gen 1 is a 10x improvement over USB 2.0.

Applications

USB 3.0/USB 3.1 Gen 1 opens up the laneways and provides more headroom for devices to deliver a better overall experience. Where USB

video was barely tolerable previously (both from a maximum resolution, latency, and video compression perspective), it's easy to imagine

that with 5-10 times the bandwidth available, USB video solutions should work that much better. Single-link DVI requires almost 2Gbps

throughput. Where 480Mbps was limiting, 5Gbps is more than promising. With its promised 4.8Gbps speed, the standard will find its way

into some products that previously weren't USB territory, like external RAID storage systems.

Listed below are some of the available SuperSpeed USB 3.0/USB 3.1 Gen 1 products:

• External Desktop USB 3.0/USB 3.1 Gen 1 Hard Drives

• Portable USB 3.0/USB 3.1 Gen 1 Hard Drives

• USB 3.0/USB 3.1 Gen 1 Drive Docks & Adapters

• USB 3.0/USB 3.1 Gen 1 Flash Drives & Readers

• USB 3.0/USB 3.1 Gen 1 Solid-state Drives

• USB 3.0/USB 3.1 Gen 1 RAIDs

• Optical Media Drives

• Multimedia Devices

• Networking

• USB 3.0/USB 3.1 Gen 1 Adapter Cards & Hubs

Compatibility

The good news is that USB 3.0/USB 3.1 Gen 1 has been carefully planned from the start to peacefully co-exist with USB 2.0. First of all,

while USB 3.0/USB 3.1 Gen 1 specifies new physical connections and thus new cables to take advantage of the higher speed capability of

the new protocol, the connector itself remains the same rectangular shape with the four USB 2.0 contacts in the exact same location as

before. Five new connections to carry receive and transmitted data independently are present on USB 3.0/USB 3.1 Gen 1 cables and only

come into contact when connected to a proper SuperSpeed USB connection.

USB Type-C

USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standards like USB 3.1 and USB

power delivery (USB PD).

Technology and components 11

Alternate Mode

USB Type-C is a new connector standard that is very small. It is about a third the size of an old USB Type-A plug. This is a single

connector standard that every device should be able to use. USB Type-C ports can support a variety of different protocols using

“alternate modes,” which allows you to have adapters that can output HDMI, VGA, DisplayPort, or other types of connections from that

single USB port

USB Power Delivery

The USB PD specification is also closely intertwined with USB Type-C. Currently, smartphones, tablets, and other mobile devices often

use a USB connection to charge. A USB 2.0 connection provides up to 2.5 watts of power — that'll charge your phone, but that's about

it. A laptop might require up to 60 watts, for example. The USB Power Delivery specification ups this power delivery to 100 watts. It's bi-

directional, so a device can either send or receive power. And this power can be transferred at the same time the device is transmitting

data across the connection.

This could spell the end of all those proprietary laptop charging cables, with everything charging via a standard USB connection. You could

charge your laptop from one of those portable battery packs you charge your smartphones and other portable devices from today. You

could plug your laptop into an external display connected to a power cable, and that external display would charge your laptop as you used

it as an external display — all via the one little USB Type-C connection. To use this, the device and the cable have to support USB Power

Delivery. Just having a USB Type-C connection doesn't necessarily mean they do.

USB Type-C and USB 3.1

USB 3.1 is a new USB standard. USB 3's theoretical bandwidth is 5 Gbps, while USB 3.1's is 10 Gbps. That's double the bandwidth, as fast

as a first-generation Thunderbolt connector. USB Type-C isn't the same thing as USB 3.1. USB Type-C is just a connector shape, and the

underlying technology could just be USB 2 or USB 3.0. In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but underneath

it's all USB 2.0 — not even USB 3.0. However, these technologies are closely related.

Thunderbolt over USB Type-C

Thunderbolt is a hardware interface that combines data, video, audio, and power in a single connection. Thunderbolt combines PCI

Express (PCIe) and DisplayPort (DP) into one serial signal, and additionally provides DC power, all in one cable. Thunderbolt 1 and

Thunderbolt 2 use the same connector as miniDP (DisplayPort) to connect to peripherals, while Thunderbolt 3 uses a USB Type-C

connector.

Figure 4. Thunderbolt 1 and Thunderbolt 3

1. Thunderbolt 1 and Thunderbolt 2 (using a miniDP connector)

2. Thunderbolt 3 (using a USB Type-C connector)

Thunderbolt 3 over USB Type-C

Thunderbolt 3 brings Thunderbolt to USB Type-C at speeds up to 40 Gbps, creating one compact port that does it all - delivering the

fastest, most versatile connection to any dock, display or data device like an external hard drive. Thunderbolt 3 uses a USB Type-C

connector/port to connect to supported peripherals.

1. Thunderbolt 3 uses USB Type-C connector and cables - It is compact and reversible

2. Thunderbolt 3 supports speed up to 40 Gbps

12 Technology and components

3. DisplayPort 1.4 – compatible with existing DisplayPort monitors, devices and cables

4. USB Power Delivery - Up to 130W on supported computers

Key Features of Thunderbolt 3 over USB Type-C

1. Thunderbolt, USB, DisplayPort and power on USB Type-C on a single cable (features vary between different products)

2. USB Type-C connector and cables which are compact and reversible

3. Supports Thunderbolt Networking (*varies between different products)

4. Supports up to 4K displays

5. Up to 40 Gbps

NOTE: Data transfer speed may vary between different devices.

Thunderbolt Icons

Figure 5. Thunderbolt Iconography Variations

HDMI 2.0

This topic explains the HDMI 2.0 and its features along with the advantages.

HDMI (High-Definition Multimedia Interface) is an industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an

interface between any compatible digital audio/video source, such as a DVD player, or A/V receiver and a compatible digital audio and/or

video monitor, such as a digital TV (DTV). The intended applications for HDMI TVs, and DVD players. The primary advantage is cable

reduction and content protection provisions. HDMI supports standard, enhanced, or high-definition video, plus multichannel digital audio

on a single cable.

HDMI 2.0 Features

•HDMI Ethernet Channel - Adds high-speed networking to an HDMI link, allowing users to take full advantage of their IP-enabled

devices without a separate Ethernet cable

•Audio Return Channel - Allows an HDMI-connected TV with a built-in tuner to send audio data "upstream" to a surround audio

system, eliminating the need for a separate audio cable

•3D - Defines input/output protocols for major 3D video formats, paving the way for true 3D gaming and 3D home theater applications

•Content Type - Real-time signaling of content types between display and source devices, enabling a TV to optimize picture settings

based on content type

•Additional Color Spaces - Adds support for additional color models used in digital photography and computer graphics

•4K Support - Enables video resolutions far beyond 1080p, supporting next-generation displays that will rival the Digital Cinema

systems used in many commercial movie theaters

•HDMI Micro Connector - A new, smaller connector for phones and other portable devices, supporting video resolutions up to 1080p

•Automotive Connection System - New cables and connectors for automotive video systems, designed to meet the unique

demands of the motoring environment while delivering true HD quality

Advantages of HDMI

• Quality HDMI transfers uncompressed digital audio and video for the highest, crispest image quality.

• Low -cost HDMI provides the quality and functionality of a digital interface while also supporting uncompressed video formats in a

simple, cost-effective manner

• Audio HDMI supports multiple audio formats from standard stereo to multichannel surround sound

Technology and components 13

• HDMI combines video and multichannel audio into a single cable, eliminating the cost, complexity, and confusion of multiple cables

currently used in A/V systems

• HDMI supports communication between the video source (such as a DVD player) and the DTV, enabling new functionality

Advantages of DisplayPort over USB Type-C

• Full DisplayPort audio/video (A/V) performance (up to 4K at 60Hz)

• Reversible plug orientation and cable direction

• Backwards compatibility to VGA, DVI with adaptors

• SuperSpeed USB (USB 3.1) data

• Supports HDMI 2.0a and is backwards compatible with previous versions

14 Technology and components

Major components of your system

1. Side cover

2. Heatsink and fan

Major components of your system 15

3. Hard drive

4. Hard drive bracket

5. Hard drive and optical drive module

6. Optical drive

7. Power switch

8. System board

9. I/O panel

10. Side cover

11. System fan

12. Speaker

13. Memory module

14. Processor

15. Power supply unit

16. Graphics card

NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These

parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative

for purchase options.

16 Major components of your system

Removing and Installing components

Topics:

•Recommended tools

•Screw size list

•Motherboard layout

•Side cover

•Expansion card

•Coin cell battery

•Hard drive assembly

•Front Bezel

•Hard drive and optical drive module

•Optical drive

•Memory module

•Heat sink and fan

•Intrusion switch

•Power switch

•Processor

•M.2 PCIe Solid State Drive -SSD

•Intel Optane card

•SD card reader - optional

•Internal Antenna - optional

•External Antenna - optional

•M.2 2230 WLAN card - optional

•Power supply unit

•Speaker

•System fan

•System board

Recommended tools

The procedures in this document require the following tools:

• Phillips #0 screwdriver

• Phillips #1 screwdriver

• Philips #2 screwdriver

• Plastic scribe

• T-30 torx screwdriver

NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4.

Removing and Installing components 17

Screw size list

Table 4. Screw size list

Component #6.32x1.4 #6-32 M3x6 M3x5 M3x3 M2x3.5

System board 5 1 1

SSD card screw nut 1

Hard disk drive

caddy

Power supply unit 3

Front IO bracket 1

SD card reader 2

Type C/HDMI/DP

module

Internal antenna 2

Wifi card 1

SSD card 1

18 Removing and Installing components

Motherboard layout

1. PCI-e x16 connector (slot 2) 2. PCI-e x4 connector (slot1—open ended x4 to support x16

3. USB Type-C connector 4. Video connector

5. Intrusion switch connector (Intruder) 6. CPU power connector (ATX_CPU)

7. Processor socket (CPU) 8. CPU fan connector

9. Memory slots (DIMM1, DIMM2, DIMM3, DIMM4) 10. Power switch connector (PWR_SW)

11. Remote PWR switch connector 12. Media card reader connector (Card_reader)

13. M.2 SSD card/Intel Optane connector 14. System fan connector

15. Clear password jumper (PASSWORD_CLR) 16. SATA 0 connector

17. PSU connector 18. M.2 WLAN connector

19. Internal speaker connector (INT_SPKR) 20. SATA 3 connector

21. Internal USB connector (FRONT_USB 22. SATA power connector (SATA_PWR)

23. SATA 2 connector 24. Coin cell battery

Side cover

Removing the side cover

1. Follow the procedure in Before working inside your computer.

2. To remove the cover:

a) Slide the release latch on the back side of your system until it gives a click sound to unlock the side cover [1].

b) Slide and lift the side cover from the system [2].

Removing and Installing components 19

Installing the side cover

1. Place the cover on the system and slide the cover until it clicks into place.

2. The release latch automatically locks the side cover to the system.

20 Removing and Installing components

3. Follow the procedure in After working inside your computer

Expansion card

Removing expansion card

1. Follow the procedure in Before working inside your computer.

2. Remove the Side cover.

3. To remove the expansion card:

a) Pull the metal tab to open the expansion card latch [1].

b) Pull the release tab at the base of the expansion card [2].

c) Disconnect and lift the expansion card away from the connector on the system board [3].

Removing and Installing components 21

Installing the expansion card

1. Insert the expansion card into the connector on the system board.

2. Press the expansion card until it clicks into place [1].

3. Close the expansion card latch and press it until it clicks into place [2].

22 Removing and Installing components

4. Install the Side cover.

5. Follow the procedure in After working inside your computer.

Coin cell battery

Removing coin cell battery

1. Follow the procedure in Before working inside your computer.

2. Remove the Side cover.

3. To remove the coin cell battery:

a) Using a plastic scribe press the release latch until the coin cell battery pops out [1].

b) Remove the coin cell battery from the system [2].

Removing and Installing components 23

Installing the coin cell battery

1. Place the coin cell battery in its slot on the system board [1].

2. Press the battery into the connector until it locks into place [2].

24 Removing and Installing components

3. Install the Side cover.

4. Follow the procedure in After working inside your computer.

Hard drive assembly

Removing the hard drive assembly

1. Follow the procedure in Before working inside your computer.

2. Remove the Side cover.

3. To remove the hard drive assembly:

a) Disconnect the hard drive data cable and power cable from the connectors on the hard drive [1, 2].

b) Push the release tab and lift the hard drive assembly from the system [3].

Removing and Installing components 25

4. To remove the 2.5 inch hard drive from the assembly bracket:

a) Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1,2].

b) Lift the hard drive out of the hard drive bracket [3].

5. To remove the 3.5 inch hard drive from the assembly bracket:

a) Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1,2].

b) Lift the hard drive out of the hard drive bracket [3].

26 Removing and Installing components

Installing the hard drive assembly

1. To replace the 2.5 inch hard drive from the assembly bracket:

a) Align the tabs on the hard drive with the slots on the hard drive assembly at a 30 degree angle [1].

b) Press the hard drive so that it gets secured to the hard drive assembly bracket [2].

2. To replace the 3.5 inch hard drive from the assembly bracket:

a) Align the tabs on the hard drive with the slots on the hard drive assembly at a 30 degree angle [1].

b) Press the hard drive so that it gets secured to the hard drive assembly bracket [2].

3. To replace the hard drive assembly:

a) Insert the hard drive assembly into the slot on the system [1,2].

b) Connect the power cable and hard drive cable to the connectors on the hard drive [3,4].

Removing and Installing components 27

4. Install the Side cover.

5. Follow the procedure in After working inside your computer.

Front Bezel

Removing front bezel

1. Follow the procedure in Before working inside your computer.

2. Remove the Side cover.

3. To remove the front bezel:

a) Pry the retention tabs to release the front bezel from the system [1] and pull to release the hooks on the front bezel from the

front-panel slots [2].

b) Remove the front bezel from the system [3].

28 Removing and Installing components

Installing front bezel

1. Align the bezel and insert the retention tabs on the bezel into the slots on the system.

2. Press the bezel until the tabs clicks into place.

3. Install the Side cover.

4. Follow the procedure in After working inside your computer.

Removing and Installing components 29

Hard drive and optical drive module

Removing the hard drive and optical drive module

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

3. To release the hard drive and optical drive module:

a) Disconnect the hard drive data cable and power cable from the connectors on the hard drive [1, 2].

b) Slide the release tab to unlock the hard drive and optical module [3].

c) Unroute the hard drive cables [1] and optical drive cables [2] through the retention clip and HDD-ODD release tab respectively.

d) Lift the hard drive and optical module [3]

30 Removing and Installing components

4. To remove the hard drive and optical drive module:

a) Disconnect the optical drive data cable and optical drive power cable from the connectors on the optical drive [1, 2].

b) Slide and lift the hard drive and optical drive module from the system [3].

Removing and Installing components 31

Installing the hard drive and optical drive module

1. Insert the tabs on the hard drive and optical drive module into the slot on the system at a 30 degree angle [1].

2. Connect the optical drive data cable and power cable to the connectors on the optical drive [2, 3].

3. Lower the hard drive and optical drive module so that it is placed in its slot [4].

32 Removing and Installing components

4. Route the optical drive data cable and power cable through the retention clips [1].

5. Route the hard drive data and power cables through the HDD-ODD release tab [2].

Removing and Installing components 33

6. Slide the release tab to lock the module [1].

7. Connect the hard drive data cable and power cable from the connectors on the hard drive [2, 3].

34 Removing and Installing components

8. Install the:

a) Front bezel

b) Side cover

9. Follow the procedure in After working inside your computer.

Optical drive

Removing the optical drive

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

3. To remove the optical drive:

a) Disconnect the hard drive data cable and power cable from the connectors on the hard drive [1, 2].

b) Slide the release tab to unlock the hard drive and optical module [3].

c) Lift the hard drive and optical module [4].

Removing and Installing components 35

d) Disconnect the optical drive data cable and optical drive power cable from the connectors on the optical drive [1, 2] and lower the

hard drive and optical module until it is seated [3].

36 Removing and Installing components

e) Press and push the release latch on the optical drive [1,2] and pull the optical drive out from the system [3].

Removing and Installing components 37

Installing the optical drive

1. Slide the optical drive into its slot in the system [1].

2. Lift the hard drive and optical module [2].

38 Removing and Installing components

3. Connect the optical drive data cable and power cable to the connectors on the optical drive [1, 2].

4. Place the hard drive and optical module back on the system [3].

Removing and Installing components 39

5. Connect the hard drive data cable and hard drive power cable to the connectors on the hard drive [1,2].

6. Slide the release tab to lock the module [3,4].

40 Removing and Installing components

7. Install the:

a) Front bezel

b) Side cover

8. Follow the procedure in After working inside your computer.

Memory module

Removing memory module

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the memory module:

a) Pry open the retention tabs from both sides to lift the memory module from the connector [1].

b) Remove the memory module from the system board [2].

Removing and Installing components 41

Installing the memory module

1. Align the notch on the memory module with the tab on the memory module connector.

2. Insert the memory module into the memory module socket [1].

3. Press the memory module until the memory module retention tabs click into place [2].

42 Removing and Installing components

4. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

5. Follow the procedure in After working inside your computer.

Heat sink and fan

Removing heat sink and heat sink fan

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the heat sink with fan:

a) Disconnect the heat sink fan cable from the system board [1].

b) Loosen the 4 captive screws that secure the heat sink [2] and lift it away from the system [3].

NOTE: Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board.

Removing and Installing components 43

4. To remove the heat sink fan:

a) Remove the four screws from the fan and lift the fan away from the heat sink.

Installing heat sink and heat sink fan

1. To install the heat sink fan:

a) Align and place the slots on the fan to the slots on the heat sink module.

b) Replace the four screws to secure the heat sink fan to the heat sink.

44 Removing and Installing components

2. To replace the heat sink:

a) Align the heat sink onto the processor [1].

b) Tighten the 4 captive screws to secure the heat sink assembly to the system board [2].

NOTE: Tighten the screws in a sequential order (1,2,3,4) as mentioned on the system board.

c) Connect the heat sink fan cable to the slot on the system board [3].

3. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

Removing and Installing components 45

4. Follow the procedure in After working inside your computer.

Intrusion switch

Removing intrusion switch

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

d) Heat sink and heat sink fan

3. To remove the intrusion switch:

a) Disconnect the intrusion switch cable from the connector on the system board [1].

b) Slide the intrusion switch and lift it away from the system [2].

Installing the intrusion switch

1. Insert the intrusion switch into the slot on the chassis [1].

2. Connect the intrusion switch cable to the system board [2].

46 Removing and Installing components

3. Install the:

a) Heat sink and heat sink fan

b) Hard drive and optical drive module

c) Front bezel

d) Side cover

4. Follow the procedure in After working inside your computer.

Power switch

Removing power switch

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the power switch:

a) Disconnect the power switch cable from the system board [1].

b) Press the power switch retention tabs and pull the power switch out from the system [2] [3].

Removing and Installing components 47

Installing the power switch

1. Slide the power switch module into the slot on the chassis until it clicks into place [1].

2. Connect the power switch cable to the connector on the system board [2].

48 Removing and Installing components

3. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

4. Follow the procedure in After working inside your computer.

Processor

Removing processor

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

d) Heat sink and heat sink fan

3. To remove the processor:

a) Release the socket lever by pushing the lever down and out from under the tab on the processor shield [1].

b) Lift the lever upward and lift the processor shield [2].

c) Lift the processor out of the socket [3].

Removing and Installing components 49

Installing the processor

1. Place the processor on the socket such that the slots on the processor align with the socket keys [1].

2. Close the processor shield by sliding it under the retention screw [2].

3. Lower the socket lever and push it under the tab to lock it [3].

50 Removing and Installing components

4. Install the:

a) Heat sink and heat sink fan

b) Hard drive and optical drive module

c) Front bezel

d) Side cover

5. Follow the procedure in After working inside your computer.

M.2 PCIe Solid State Drive -SSD

Removing the M.2 PCIe Solid State Drive -SSD

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the M.2 PCIe SSD card:

a) Remove the single (M2 x 3.5) screw that secures the M.2 PCIe SSD card to the system board [1].

b) Lift and pull out the SSD card from its connector on the system board [2].

c) Peel the thermal pad from the system board [3].

Removing and Installing components 51

NOTE: M.2 PCIe SSD with capacity over 512G(512G/1TB/2TB) must be installed with a thermal pad. M.2 SATA

SSD and M.2 PCIe SSD with 128G and 256G does not require a thermal pad.

Installing the M.2 PCIe Solid State Drive -SSD

1. Place the thermal pad into the slot on the system board [1].

NOTE: M.2 PCIe SSD with capacity over 512G(512G/1TB/2TB) must be installed with a thermal pad. M.2 SATA SSD

and M.2 PCIe SSD with 128G and 256G does not require a thermal pad.

2. Insert the M.2 PCIe SSD card into the card slot on the system board [2].

3. Replace the single (M2 x 3.5) screw that secures the M.2 PCIe SSD card to the system board [3].

52 Removing and Installing components

4. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

5. Follow the procedure in After working inside your computer.

Intel Optane card

Removing the Intel Optane card

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the Intel Optane card:

a) Remove the single (M2 x 3.5) screw that secures the Intel Optane card to the system board [1].

b) Lift and pull out the Intel Optane card from its connector on the system board [2].

c) Peel the thermal pad [3].

Removing and Installing components 53

Installing the Intel Optane card

1. Place the thermal pad into the slot on the system board [1].

2. Insert the Intel Optane card into the card slot on the system board [2].

3. Replace the single (M2 x 3.5) screw that secures the Intel Optane card to the system board [3].

NOTE: Intel Optane modules must be installed with a thermal pad.

54 Removing and Installing components

4. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

5. Follow the procedure in After working inside your computer.

SD card reader - optional

Removing the SD card reader

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the SD card reader:

a) Unroute the power cables from the retention clip on the SD card reader [1].

b) Remove the two (M3) screws that secures the SD card reader to the I/O panel and the system board [2].

Removing and Installing components 55

c) Lift the SD card reader from the slot on the system board [3].

Installing the SD card reader

1. Route the power cables back through the retention clip on the SD card reader [1].

2. Insert the SD card reader from the slot on the system board [2].

3. Replace the two (M3) screws that secures the SD card reader to the I/O panel and the system board [3].

56 Removing and Installing components

4. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

5. Follow the procedure in After working inside your computer.

Internal Antenna - optional

Removing the Internal Antenna

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the antenna from the system:

a) Unroute the antenna cable from the cable hole on the chassis [1].

b) Unroute the antenna cable from the two hooks on the chassis [2].

Removing and Installing components 57

c) Remove the single screw that secures the antenna to the chassis [1].

d) Remove the black antenna cable from the ANT-B slot on the chassis [2,3].

58 Removing and Installing components

e) Remove the single screw that secures the antenna to the chassis [1].

f) Remove the white antenna cable from the ANT-W slot on the chassis [2,3].

Removing and Installing components 59

Installing the Internal Antenna

1. Peel off the mylar tape from internal antenna.

60 Removing and Installing components

2. To install the antenna on the system:

a) Align and insert the white antenna cable into the ANT-W slot on the chassis [1,2]

b) Replace the single screw to secure the antenna to the chassis [3].

Removing and Installing components 61

c) Align and insert the black antenna cable into the ANT-B slot on the chassis [1,2].

d) Replace the single screw to secure the antenna to the chassis [3].

62 Removing and Installing components

e) Route the antenna cable across the two hooks [1].

f) Route the antenna cable through the cable hole on the chassis [2].

Removing and Installing components 63

g) Remove the plastic tube from internal antenna cable.

64 Removing and Installing components

3. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

4. Follow the procedure in After working inside your computer.

External Antenna - optional

Removing the External Antenna

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the antenna from the system:

a) Loosen and remove the antenna screw that connects to the antenna cable connector screws.

Removing and Installing components 65

b) Unroute the antenna cable from the retention clip on the chassis [1].

c) Remove the retention clip from the chassis[2].

66 Removing and Installing components

d) Disconnect the antenna connectors from the connectors on the WLAN card.

e) Remove the nuts to secure the antenna connectors to the chassis [1].

f) Remove the metal washers on to the antenna connectors [2].

g) Remove the antenna cables from the antenna slot on the chassis [3].

Removing and Installing components 67

Installing the External Antenna

1. External antenna.

68 Removing and Installing components

2. To install the antenna on the system:

a) Remove the caps from the antenna cable [1].

b) Loosen and remove the nut [2].

c) Remove the metallic washer [3].

d) Push the blank filler with a screw driver.

Removing and Installing components 69

e) Insert the antenna cables into the antenna slot on the chassis [1].

f) Replace the metal washers on to the antenna connectors [2].

g) Replace the nuts to secure the antenna connectors to the chassis [3].

70 Removing and Installing components

h) Affix the retention clip on the chassis as show in the image [1].

i) Route the antenna cable through the retention clip [2].

j) Pull off the insulation on the antenna cable connectors [3].

Removing and Installing components 71

k) Connect the antenna connectors to the connectors on the WLAN card.

l) Tighten the antenna to the antenna cable connector screws.

72 Removing and Installing components

3. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

4. Follow the procedure in After working inside your computer.

M.2 2230 WLAN card - optional

Removing the M.2 2230 WLAN card

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the M.2 2230 WLAN card:

a) Remove the screw (M2) that secures the WLAN card bracket and the WLAN card to the system board [1].

b) Slide and lift the WLANs card bracket off the WLAN card [2].

c) Disconnect the antenna cables from the WLAN card [3].

d) Slide and remove the WLAN card out of the WLAN card slot [4].

Removing and Installing components 73

Installing the M.2 2230 WLAN card

1. To install the M.2 2230 WLAN card:

a) Align and replace the WLAN card into the WLAN card slot [1].

b) Connect the antenna cables to the WLAN card [2].

c) Replace the WLAN card bracket on the WLAN card [3].

d) Replace the screw (M2) that secures the WLAN card bracket and the WLAN to the system board [4].

74 Removing and Installing components

2. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

3. Follow the procedure in After working inside your computer.

Power supply unit

Removing power supply unit or PSU

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To release the PSU:

a) Disconnect the CPU power cable from the connector on the system board [1].

b) Unroute the power cables from the retention clips on the chassis [2,3].

c) Disconnect the PSU power cable from the connector on the system board [4].

Removing and Installing components 75

4. To remove the PSU:

a) Remove the 3 screws that secure the PSU to the system [1].

b) Press the blue release tab [4] at the rear end of the PSU unit, slide the PSU and lift it away from the system [2].

76 Removing and Installing components

Installing the power supply unit or PSU

1. Insert the PSU in the chassis and slide it towards the back of the system to secure it [1].

2. Replace the screws to secure the PSU to the rear chassis of the system .

Removing and Installing components 77

3. Connect the power cable to the connector on the system board [1].

4. Route the system power cable through the retention clips [2].

5. Route the CPU power cable through the retention clips [3].

6. Connect the CPU power cable to the connector on the system board [4].

78 Removing and Installing components

7. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

8. Follow the procedure in After working inside your computer.

Speaker

Removing speaker

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the speaker:

a) Disconnect the speaker cable from the connector on the system board [1].

b) Press the release tab [2] and pull the speaker out from the system [3].

Removing and Installing components 79

Installing the speaker

1. Insert the speaker into the slot on the system chassis and press it until it clicks into place [1].

2. Connect the speaker cable to the connector on the system board [2].

80 Removing and Installing components

3. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

4. Follow the procedure in After working inside your computer.

System fan

Removing the system fan

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

3. To remove the system fan:

a) Disconnect the system fan cable from the system board [1].

b) Slide the fan grommets towards the slot on the back of the fan chassis [2].

c) Lift the fan away from the system [3, 4].

Removing and Installing components 81

Installing the system fan

1. To replace the system fan:

a) Align and place the system fan in the system chassis [1].

b) Pass the grommets through the chassis and slide outward along the groove to secure it in place [2,3].

c) Connect the system fan cable to the system board [4].

82 Removing and Installing components

2. Install the:

a) Hard drive and optical drive module

b) Front bezel

c) Side cover

3. Follow the procedure in After working inside your computer.

System board

Removing system board

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a) Side cover

b) Front bezel

c) Hard drive and optical drive module

d) Heat sink and heat sink fan

e) Processor

f) Memory module

g) M.2 PCIe SSD card

h) Intel Optane card

i) SD card reader

j) M.2 2230 WLAN card

3. To remove the I/O panel:

a) Remove the screw that secures the I/O panel [1].

b) Rotate the I/O panel and remove it from the system [2].

Removing and Installing components 83

c) Disconnect the power switch cable [3], unroute the power cable from the retention clips on the chassis [4], psu cable [5] and,

intrusion switch cable [6] from the connectors on the system board.

4. Disconnect the intrusion switch cable [1], PSU power cable [2], data cable [3], system fan cable [4], SATA cable [5], SATA power

cable [6]

84 Removing and Installing components

5. To remove the screws from the system board:

a) Remove the standoff single (#6-32) screw and single (M3x6) caddy screw that secures the system board to the system [1,2].

b) Remove the 5 screws that secure the system board to the chassis [3].

Removing and Installing components 85

6. To remove the system board:

a) Lift and slide the system board away from the system [1, 2].

86 Removing and Installing components

Installing the system board

1. Hold the system board by its edges, and align it towards the back of the system.

2. Lower the system board into the system chassis until the connectors at the back of the system board align with the slots on the

chassis, and the screw holes on the system board align with the standoffs on the system chassis [1,2].

3. Replace the 5 screws that secure the system board to the system [1], the single (M3x5) screw [2], and the single (#6-32) screw [3].

Removing and Installing components 87

4. Align the cables with the pins on connectors on the system board and connect intrusion switch cable [1], PSU power cable [2], data

cable [3], system fan cable [4], SATA cable [5], SATA power cable [6] to the system board:

88 Removing and Installing components

5. Insert the hook on the I/O panel into the slot on the chassis and rotate to close the I/O panel [1].

6. Replace the screw to secure the I/O panel to the chassis [2].

7. Connect the power switch cable [3], route the power cable through the retention clips on the chassis [4], psu cable [5] and, intrusion

switch cable [6] from the connectors on the system board.

8. Install the:

a) M.2 2230 WLAN card

b) SD card reader

c) Intel Optane card

d) M.2 PCIe SSD card

e) Memory module

f) Processor

g) Heat sink and heat sink fan

h) Hard drive and optical drive module

i) Front bezel

j) Side cover

9. Follow the procedure in After working inside your computer.

Removing and Installing components 89

Troubleshooting your computer

Enhanced Pre-Boot System Assessment — ePSA

diagnostics

The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the

BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device

groups allowing you to:

The ePSA diagnostics can be initiated by the FN+PWR buttons while powering on the computer.

• Run tests automatically or in an interactive mode

• Repeat tests

• Display or save test results

• Run thorough tests to introduce additional test options to provide extra information about the failed device(s)

• View status messages that inform you if tests are completed successfully

• View error messages that inform you of problems encountered during testing

NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer

terminal when the diagnostic tests are performed.

Running the ePSA Diagnostics

Invoke diagnostics boot by either of the methods that are suggested below:

1. Power on the computer.

2. As the computer boots, press the F12 key when the Dell logo is displayed.

3. In the boot menu screen, use Up/Down arrow key to select the Diagnostics option and then press Enter.

NOTE: The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer.

The diagnostics starts running the tests on all the detected devices.

4. Press the arrow in the lower-right corner to go to the page listing.

The detected items are listed and tested.

5. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.

6. Select the device from the left pane and click Run Tests.

7. If there are any issues, error codes are displayed.

Note the error code and contact Dell.

8. Shut down the computer.

9. Press and hold the Fn key, while pressing the power button, and then release both.

10. Repeat steps 3–7 above.

Diagnostics

The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working

appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode.

However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated on

the Power button.

The following table shows different light patterns and what they indicate.

90 Troubleshooting your computer

Table 5. Power LED summary

Amber LED state White LED state System state Notes

Off Off S5

Off Blinking S3, no PWRGD_PS

Previous State Previous State S3, no PWRGD_PS This entry provides for the

possibility of a delay from

SLP_S3# active to PWRGD_PS

inactive.

Blinking Off S0, no PWRGD_PS

Steady Off S0, no PWRGD_PS, Code fetch

= 0

Off Steady S0, no PWRGD_PS, Code fetch

= 1

This indicates that the host

BIOS has started to execute and

the LED register is now writable.

Table 6. Amber LED blinking failures

Amber LED state White LED state System state Notes

2 1 Bad MBD Bad MBD - Rows A, G, H, and J

from table 12.4 of SIO Spec -

Pre-Post indicators [40]

2 2 Bad MB, PSU or cabling Bad MBD, PSU or PSU cabling -

Rows B, C and D of table 12.4

SIO spec [40]

2 3 Bad MBD, DIMMS, or CPU Bad MBD, DIMMS or CPU -

Rows F and K from table 12.4 of

SIO spec [40]

2 4 Bad coin cell Bad coin cell - Row M of table

12.4 in SIO spec [40]

Table 7. States Under Host BIOS Control

Amber LED state White LED state System state Notes

2 5 BIOS state 1 BIOS Post code (Old LED

pattern 0001) Corrupt BIOS.

2 6 BIOS state 2 BIOS Post code (Old LED

pattern 0010) CPU config or

CPU failure.

2 7 BIOS state 3 BIOS Post code (Old LED

pattern 0011) MEM config in

process. Appropriate mem

modules detected but failure has

occurred.

3 1 BIOS state 4 BIOS Post code (Old LED

pattern 0100) Combine PCI

device config or failure with

video sub sytem config or failure.

BIOS to eliminate 0101 video

code.

3 2 BIOS state 5 BIOS Post code (Old LED

pattern 0110) Combine storage

and USB config or failure. BIOS

to eliminate 0111 USB code.

Troubleshooting your computer 91

Amber LED state White LED state System state Notes

3 3 BIOS state 6 BIOS Post code (Old LED

pattern 1000) MEM config, no

memory detected.

3 4 BIOS state 7 BIOS Post code (Old LED

pattern 1001) Fatal Motherboard

error.

3 5 BIOS state 8 BIOS Post code (Old LED

pattern 1010) Mem config,

modules incompatible or invalid

config.

3 6 BIOS state 9 BIOS Post code (Old LED

pattern 1011) combine "Other

pre-video activity and resource

configuration codes. BIOS to

eliminate 1100 code.

3 7 BIOS state 10 BIOS Post code (Old LED

pattern 1110) Other pre-post

activity, routine subsequent to

video init.

Diagnostic error messages

Table 8. Diagnostic error messages

Error messages Description

AUXILIARY DEVICE FAILURE The touchpad or external mouse may be faulty. For an external

mouse, check the cable connection. Enable the Pointing Device

option in the System Setup program.

BAD COMMAND OR FILE NAME Ensure that you have spelled the command correctly, put spaces in

the proper place, and used the correct path name.

CACHE DISABLED DUE TO FAILURE The primary cache internal to the microprocessor has failed.

Contact Dell

CD DRIVE CONTROLLER FAILURE The optical drive does not respond to commands from the

computer.

DATA ERROR The hard drive cannot read the data.

DECREASING AVAILABLE MEMORY One or more memory modules may be faulty or improperly seated.

Reinstall the memory modules or, if necessary, replace them.

DISK C: FAILED INITIALIZATION The hard drive failed initialization. Run the hard drive tests in Dell

Diagnostics.

DRIVE NOT READY The operation requires a hard drive in the bay before it can

continue. Install a hard drive in the hard drive bay.

ERROR READING PCMCIA CARD The computer cannot identify the ExpressCard. Reinsert the card

or try another card.

EXTENDED MEMORY SIZE HAS CHANGED The amount of memory recorded in non-volatile memory (NVRAM)

does not match the memory module installed in the computer.

Restart the computer. If the error appears again, Contact Dell

THE FILE BEING COPIED IS TOO LARGE FOR THE

DESTINATION DRIVE

The file that you are trying to copy is too large to fit on the disk, or

the disk is full. Try copying the file to a different disk or use a larger

capacity disk.

A FILENAME CANNOT CONTAIN ANY OF THE FOLLOWING

CHARACTERS: \ / : * ? " < > | -

Do not use these characters in filenames.

92 Troubleshooting your computer

Error messages Description

GATE A20 FAILURE A memory module may be loose. Reinstall the memory module or, if

necessary, replace it.

GENERAL FAILURE The operating system is unable to carry out the command. The

message is usually followed by specific information. For example,

Printer out of paper. Take the appropriate

action.

HARD-DISK DRIVE CONFIGURATION ERROR The computer cannot identify the drive type. Shut down the

computer, remove the hard drive, and boot the computer from an

optical drive. Then, shut down the computer, reinstall the hard

drive, and restart the computer. Run the Hard Disk Drive tests in

Dell Diagnostics.

HARD-DISK DRIVE CONTROLLER FAILURE 0 The hard drive does not respond to commands from the computer.

Shut down the computer, remove the hard drive, and boot the

computer from an optical drive. Then, shut down the computer,

reinstall the hard drive, and restart the computer. If the problem

persists, try another drive. Run the Hard Disk Drive tests in Dell

Diagnostics.

HARD-DISK DRIVE FAILURE The hard drive does not respond to commands from the computer.

Shut down the computer, remove the hard drive, and boot the

computer from an optical drive. Then, shut down the computer,

reinstall the hard drive, and restart the computer. If the problem

persists, try another drive. Run the Hard Disk Drive tests in Dell

Diagnostics.

HARD-DISK DRIVE READ FAILURE The hard drive may be defective. Shut down the computer, remove

the hard drive, and boot the computer from an optical. Then, shut

down the computer, reinstall the hard drive, and restart the

computer. If the problem persists, try another drive. Run the Hard

Disk Drive tests in Dell Diagnostics.

INSERT BOOTABLE MEDIA The operating system is trying to boot to non-bootable media, such

as an optical drive. Insert bootable media.

INVALID CONFIGURATION INFORMATION-PLEASE RUN

SYSTEM SETUP PROGRAM

The system configuration information does not match the

hardware configuration. The message is most likely to occur after a

memory module is installed. Correct the appropriate options in the

system setup program.

KEYBOARD CLOCK LINE FAILURE For external keyboards, check the cable connection. Run the

Keyboard Controller test in Dell Diagnostics.

KEYBOARD CONTROLLER FAILURE For external keyboards, check the cable connection. Restart the

computer, and avoid touching the keyboard or the mouse during

the boot routine. Run the Keyboard Controller test in Dell

Diagnostics.

KEYBOARD DATA LINE FAILURE For external keyboards, check the cable connection. Run the

Keyboard Controller test in Dell Diagnostics.

KEYBOARD STUCK KEY FAILURE For external keyboards or keypads, check the cable connection.

Restart the computer, and avoid touching the keyboard or keys

during the boot routine. Run the Stuck Key test in Dell

Diagnostics.

LICENSED CONTENT IS NOT ACCESSIBLE IN

MEDIADIRECT

Dell MediaDirect cannot verify the Digital Rights Management

(DRM) restrictions on the file, so the file cannot be played.

MEMORY ADDRESS LINE FAILURE AT ADDRESS, READ

VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated. Reinstall the

memory module or, if necessary, replace it.

MEMORY ALLOCATION ERROR The software you are attempting to run is conflicting with the

operating system, another program, or a utility. Shut down the

computer, wait for 30 seconds, and then restart it. Run the

program again. If the error message still appears, see the software

documentation.

Troubleshooting your computer 93

Error messages Description

MEMORY DOUBLE WORD LOGIC FAILURE AT ADDRESS,

READ VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated. Reinstall the

memory module or, if necessary, replace it.

MEMORY ODD/EVEN LOGIC FAILURE AT ADDRESS, READ

VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated. Reinstall the

memory module or, if necessary, replace it.

MEMORY WRITE/READ FAILURE AT ADDRESS, READ

VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated. Reinstall the

memory module or, if necessary, replace it.

NO BOOT DEVICE AVAILABLE The computer cannot find the hard drive. If the hard drive is your

boot device, ensure that the drive is installed, properly seated, and

partitioned as a boot device.

NO BOOT SECTOR ON HARD DRIVE The operating system may be corrupted, Contact Dell.

NO TIMER TICK INTERRUPT A chip on the system board may be malfunctioning. Run the

System Set tests in Dell Diagnostics.

NOT ENOUGH MEMORY OR RESOURCES. EXIT SOME

PROGRAMS AND TRY AGAIN

You have too many programs open. Close all windows and open the

program that you want to use.

OPERATING SYSTEM NOT FOUND Reinstall the operating system. If the problem persists, Contact

Dell.

OPTIONAL ROM BAD CHECKSUM The optional ROM has failed. Contact Dell.

SECTOR NOT FOUND The operating system cannot locate a sector on the hard drive. You

may have a defective sector or corrupted File Allocation Table

(FAT) on the hard drive. Run the Windows error-checking utility to

check the file structure on the hard drive. See Windows Help and

Support for instructions (click Start > Help and Support). If a

large number of sectors are defective, back up the data (if

possible), and then format the hard drive.

SEEK ERROR The operating system cannot find a specific track on the hard

drive.

SHUTDOWN FAILURE A chip on the system board may be malfunctioning. Run the

System Set tests in Dell Diagnostics. If the message reappears,

Contact Dell.

TIME-OF-DAY CLOCK LOST POWER System configuration settings are corrupted. Connect your

computer to an electrical outlet to charge the battery. If the

problem persists, try to restore the data by entering the System

Setup program, then immediately exit the program. If the message

reappears, Contact Dell.

TIME-OF-DAY CLOCK STOPPED The reserve battery that supports the system configuration

settings may require recharging. Connect your computer to an

electrical outlet to charge the battery. If the problem persists,

Contact Dell.

TIME-OF-DAY NOT SET-PLEASE RUN THE SYSTEM SETUP

PROGRAM

The time or date stored in the system setup program does not

match the system clock. Correct the settings for the Date and

Time options.

TIMER CHIP COUNTER 2 FAILED A chip on the system board may be malfunctioning. Run the

System Set tests in Dell Diagnostics.

UNEXPECTED INTERRUPT IN PROTECTED MODE The keyboard controller may be malfunctioning, or a memory

module may be loose. Run the System Memory tests and the

Keyboard Controller test in Dell Diagnostics or Contact Dell.

X:\ IS NOT ACCESSIBLE. THE DEVICE IS NOT READY Insert a disk into the drive and try again.

94 Troubleshooting your computer

System error messages

Table 9. System error messages

System message Description

Alert! Previous attempts at booting this system

have failed at checkpoint [nnnn]. For help in

resolving this problem, please note this

checkpoint and contact Dell Technical Support

The computer failed to complete the boot routine three

consecutive times for the same error.

CMOS checksum error RTC is reset, BIOS Setup default has been loaded.

CPU fan failure CPU fan has failed.

System fan failure System fan has failed.

Hard-disk drive failure Possible hard disk drive failure during POST.

Keyboard failure Keyboard failure or loose cable. If reseating the cable does not

solve the problem, replace the keyboard.

No boot device available No bootable partition on hard disk drive, the hard disk drive cable is

loose, or no bootable device exists.

• If the hard drive is your boot device, ensure that the cables are

connected and that the drive is installed properly and

partitioned as a boot device.

• Enter system setup and ensure that the boot sequence

information is correct.

No timer tick interrupt A chip on the system board might be malfunctioning or

motherboard failure.

NOTICE - Hard Drive SELF MONITORING SYSTEM has

reported that a parameter has exceeded its

normal operating range. Dell recommends that

you back up your data regularly. A parameter

out of range may or may not indicate a

potential hard drive problem

S.M.A.R.T error, possible hard disk drive failure.

Troubleshooting your computer 95

Getting help

Topics:

•Contacting Dell

Contacting Dell

NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice,

packing slip, bill, or Dell product catalog.

Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services

may not be available in your area. To contact Dell for sales, technical support, or customer service issues:

1. Go to Dell.com/support.

2. Select your support category.

3. Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page.

4. Select the appropriate service or support link based on your need.

96 Getting help

Dust Filter for Dell Precision 3431 Small Form

Factor

The dust filter for the Dell Precision 3431 Small Form Factor helps protect the system from fine dust particles. After installation of the dust

filter, the BIOS can be enabled to generate a preboot reminder to clean or replace the dust filter based on the time interval set.

Follow these steps to install the dust filter:

1. Align the plastic tabs of the dust filter to the slots on the system chassis and gently press to ensure that the dust filter fits firmly onto

the system.

2. To remove the dust filter:

a) With the help of a plastic scribe, gently pry the edge from the bottom to loosen the dust filter [1].

b) Remove the dust filter from the system chassis [2].

Dust Filter for Dell Precision 3431 Small Form Factor 97

3. Restart the system and press F2 to enter the BIOS Setup menu.

4. In the BIOS Setup menu, navigate to System Configuration > Dust Filter Maintenance and select from any of the following

intervals: 15, 30, 60, 90, 120, 150, or 180 days.

NOTE: Default setting: Disabled.

NOTE: Alerts are generated only during a system reboot and not during normal OS operation.

To clean the dust filter, brush or gently vacuum and then wipe down the external surfaces with a moist cloth.

98 Dust Filter for Dell Precision 3431 Small Form Factor

Installing the USB Type-C card

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover:

a) Slide the release latch on the back panel of your system until it gives a click sound to unlock the side cover [1].

b) Slide and lift the side cover from the system [2].

3. Remove the front bezel:

a) Pry the retention tabs to release the front bezel from the system [1] and pull to release the hooks on the front bezel from the

front-panel slots [2].

b) Remove the front bezel from the system [3].

Installing the USB Type-C card 99

4. Release the hard drive and optical drive module:

a) Disconnect the hard drive data cable and power cable from the connectors on the hard drive [1, 2].

b) Slide the release tab to unlock the hard drive and optical module [3].

c) Unroute the hard drive cables [1] and optical drive cables [2] through the retention clip and HDD-ODD release tab respectively.

d) Lift the hard drive and optical module [3]

100 Installing the USB Type-C card

5. Remove the hard drive and optical drive module:

a) Disconnect the optical drive data cable and optical drive power cable from the connectors on the optical drive [1, 2].

b) Slide and lift the hard drive and optical drive module from the system [3].

Installing the USB Type-C card 101

6. Remove the heat sink with fan:

a) Disconnect the heat sink fan cable from the system board [1].

b) Loosen the four captive screws that secure the heat sink [2] and lift it away from the system [3].

NOTE: Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board.

102 Installing the USB Type-C card

7. To install the USB Type-C card:

a) Remove the filler using a philips screwdriver.

Installing the USB Type-C card 103

b) Connect the USB Type-C card cable to the connector on the system board [1].

c) Align and place the USB Type-C card into the slot on the system chassis [2].

104 Installing the USB Type-C card

d) Connect the USB Type-C card cable to the connector on the system board [1].

e) Fasten the two screws to secure the USB Type-C card to the system chassis [2].

Installing the USB Type-C card 105

8. To install the heat sink:

a) Align the heat sink onto the processor [1].

b) Tighten the four captive screws to secure the heat sink assembly to the system board [2].

NOTE: Tighten the screws in a sequential order (1,2,3,4) as mentioned on the system board.

c) Connect the heat sink fan cable to the slot on the system board [3].

106 Installing the USB Type-C card

9. To install the hard drive and optical drive module:

a) Insert the tabs on the hard drive and optical drive module into the slot on the system at a 30-degree angle [1].

b) Connect the optical drive data cable and power cable to the connectors on the optical drive [2, 3].

c) Lower the hard drive and optical drive module so that it is placed in its slot [4].

Installing the USB Type-C card 107

d) Route the optical drive data cable and power cable through the retention clips [1].

e) Route the hard drive data and power cables through the HDD-ODD release tab [2].

108 Installing the USB Type-C card

f) Slide the release tab to lock the module [1].

g) Connect the hard drive data cable and power cable from the connectors on the hard drive [2, 3].

Installing the USB Type-C card 109

10. To install the front bezel:

a) Align the bezel, and insert the retention tabs on the bezel into the slots on the system.

b) Press the bezel until the tabs clicks into place.

110 Installing the USB Type-C card

11. To install the side cover:

a) Place the cover on the system and slide the cover until it clicks into place.

b) The release latch automatically locks the side cover to the system.

Installing the USB Type-C card 111

Installing the VGA card

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover:

a) Slide the release latch on the back panel of your system until it gives a click sound to unlock the side cover [1].

b) Slide and lift the side cover from the system [2].

3. Remove the front bezel:

a) Pry the retention tabs to release the front bezel from the system [1] and pull to release the hooks on the front bezel from the

front-panel slots [2].

b) Remove the front bezel from the system [3].

112 Installing the VGA card

4. Release the hard drive and optical drive module:

a) Disconnect the hard drive data cable and power cable from the connectors on the hard drive [1, 2].

b) Slide the release tab to unlock the hard drive and optical module [3].

c) Unroute the hard drive cables [1] and optical drive cables [2] through the retention clip and HDD-ODD release tab respectively.

d) Lift the hard drive and optical module [3]

Installing the VGA card 113

5. Remove the hard drive and optical drive module:

a) Disconnect the optical drive data cable and optical drive power cable from the connectors on the optical drive [1, 2].

b) Slide and lift the hard drive and optical drive module from the system [3].

114 Installing the VGA card

6. Remove the heat sink with fan:

a) Disconnect the heat sink fan cable from the system board [1].

b) Loosen the 4 captive screws that secure the heat sink [2] and lift it away from the system [3].

NOTE: Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board.

Installing the VGA card 115

7. To install the VGA card:

a) Remove the filler using a philips screwdriver .

116 Installing the VGA card

b) Connect the VGA card cable to the connector on the system board [1].

c) Align and place the VGA card into the slot on the system chassis [2].

Installing the VGA card 117

d) Fasten the two screws to secure the VGA card to the system chassis [1].

118 Installing the VGA card

8. To install the heat sink:

a) Align the heat sink onto the processor [1].

b) Tighten the four captive screws to secure the heat sink assembly to the system board [2].

NOTE: Tighten the screws in a sequential order (1,2,3,4) as mentioned on the system board.

c) Connect the heat sink fan cable to the slot on the system board [3].

Installing the VGA card 119

9. To install the hard drive and optical drive module:

a) Insert the tabs on the hard drive and optical drive module into the slot on the system at a 30-degree angle [1].

b) Connect the optical drive data cable and power cable to the connectors on the optical drive [2, 3].

c) Lower the hard drive and optical drive module so that it is placed in its slot [4].

120 Installing the VGA card

d) Route the optical drive data cable and power cable through the retention clips [1].

e) Route the hard drive data and power cables through the HDD-ODD release tab [2].

Installing the VGA card 121

f) Slide the release tab to lock the module [1].

g) Connect the hard drive data cable and power cable from the connectors on the hard drive [2, 3].

122 Installing the VGA card

10. To install the front bezel:

a) Align the bezel, and insert the retention tabs on the bezel into the slots on the system.

b) Press the bezel until the tabs clicks into place.

Installing the VGA card 123

11. To install the side cover:

a) Place the cover on the system and slide the cover until it clicks into place.

b) The release latch automatically locks the side cover to the system.

124 Installing the VGA card

Cable cover for Dell Precision 3431 Small Form

Factor

The cable cover for a Dell Precision 3431 Small Form Factor helps protect ports and cables connected to the system.

Follow these steps to install the cable cover on the system chassis.

NOTE: Images shown below are for representation only and may vary depending on the system's configuration.

1. Slide the latch away from the chassis to unlock the cable cover.

2. Pull the tab on the cable release latch and lift the latch away from the cable cover.

3. Lift the tab [1], to release and pull the cable tie from the slot on the cable release latch [2].

4. Align the cable release latch on the system chassis slot [1]. Tighten the single screw to secure the cable release latch to the system

chassis [2].

Cable cover for Dell Precision 3431 Small Form Factor 125

5. Route the cables through the slot of the cable cover [1], and connect them to their respective ports on the system (2). Secure the

cable with the cable tie and lock the tab in place [3]. Align the plastic hooks of the cable cover to the slots on the system [4].

CAUTION: Take care not to break or bend the delicate plastic hooks.

6. Gently press down on the cable cover until it clicks into place (1). Slide the latch towards the chassis (2) to lock the cable cover in

place.

126 Cable cover for Dell Precision 3431 Small Form Factor

NOTE: For added security, use the Padlock ring to secure the system.

7. To remove the cable cover:

a) Slide the latch away from the chassis to unlock the cable cover [1].

b) Lift the cable cover away from the system chassis [2].

Cable cover for Dell Precision 3431 Small Form Factor 127

Table of Contents

DELL 3431 User Manual

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