Dell XPS 13 9305 Service Manual - Page 76

Table 21. Diagnostic-light LED codes (continued)

Diagnostic light codes

(Amber,White)

Problem description

Recommended solutions

2,4

Memory or RAM (Random-Access

Memory) failure

Reset and swap memory modules among the slots. If

problem persists, replace the memory module.

2,5

Invalid memory installed

Reset and swap memory modules among the slots. If

problem persists, replace the memory module.

2,6

System-board or chipset error

Flash latest BIOS version. If problem persists, replace

the system board.

2,7

Display failure - SBIOS message


the system board.

3,1

Coin-cell battery failure

Reset the CMOS battery connection. If problem

persists, replace the RTC battery.

3,2

PCI, video card/chip failure

Replace the system board.

3,3

Recovery image not found


the system board.

3,4

Recovery image found but invalid


the system board.

3,5

Power-rail failure

EC ran into power sequencing failure. If problem

persists, replace the system board.

3,6

System BIOS Flash incomplete

Flash corruption detected by SBIOS. If problem

persists, replace the system board.

3,7

Management Engine (ME) error

Timeout waiting on ME to reply to HECI message. If

problem persists, replace the system board.

Recovering the operating system

When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell

SupportAssist OS Recovery.

Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating

system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating

system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its

factory state.

You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their

primary operating system due to software or hardware failures.

For more information about the Dell SupportAssist OS Recovery, see

Dell SupportAssist OS Recovery User's Guide

at

www.dell.com/support

.

Flashing the BIOS

You may need to flash (update) the BIOS when an update is available or when you replace the system board.

Follow these steps to flash the BIOS:

1.

Turn on your computer.

2.

Go to

www.dell.com/support

.

3.

Click

Product support

, enter the Service Tag of your computer, and then click

Submit

.

NOTE:

If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.

4.

Click

Drivers & downloads

>

Find it myself

.

5.

Select the operating system installed on your computer.

76

Troubleshooting

Section	Page
XPS 13 9305 Service Manual	3
Before working inside your computer	7
Before you begin	7
Safety instructions	7
Electrostatic discharge—ESD protection	8
ESD field service kit	8
After working inside your computer	9
Removing and installing components	10
Recommended tools	10
Screw list	10
Major components of XPS 13 9305	11
Replacing the base cover	13
Procedure	13
Removing the base cover	15
Procedure	15
Removing the battery	17
Lithium-ion battery precautions	17
Prerequisites	17
Procedure	17
Replacing the battery	19
Lithium-ion battery precautions	19
Procedure	19
Post-requisites	20
Removing the solid-state drive	21
Prerequisites	21
Procedure to remove M.2 2280 and M.2 2230 solid-state drives	21
Procedure to remove M.2 2280 solid-state drive	21
Procedure to remove M.2 2230 solid-state drive	22
Replacing the solid-state drive	23
Procedure to replace M.2 2280 and M.2 2230 solid-state drives	23
Procedure to replace 2280 solid-state drive	23
Procedure to replace 2230 solid-state drive	23
Post-requisites	24
Removing the speakers	25
Prerequisites	25
Procedure	25
Replacing the speakers	26
Procedure	26
Post-requisites	26
Removing the coin-cell battery	27
Prerequisites	27
Procedure	27
Replacing the coin-cell battery	28
Procedure	28
Post-requisites	28
Removing the heat sink	29
Prerequisites	29
Procedure	29
Replacing the heat sink	30
Procedure	30
Post-requisites	30
Removing the fans	31
Prerequisites	31
Procedure	31
Replacing the fans	33
Procedure	33
Post-requisites	34
Removing the heat-sink assembly	35
Prerequisites	35
Procedure	35
Replacing the heat-sink assembly	37
Procedure	37
Post-requisites	38
Removing the display assembly	39
Prerequisites	39
Procedure	39
Replacing the display assembly	41
Procedure	41
Post-requisites	42
Removing the headset port	43
Prerequisites	43
Procedure	43
Replacing the headset port	45
Procedure	45
Post-requisites	46
Removing the fans	47
Prerequisites	47
Procedure	47
Replacing the fans	49
Procedure	49
Post-requisites	50
Removing the system board	51
Prerequisites	51
Procedure	51
Replacing the system board	53
Procedure	53
Post-requisites	54
Entering the Service Tag in the BIOS setup program	54
Removing the power button with fingerprint reader	55
Prerequisites	55
Procedure	55
Replacing the power button with fingerprint reader	56
Procedure	56
Post-requisites	56
Removing the keyboard	57
Prerequisites	57
Procedure	57
Replacing the keyboard	58
Procedure	58
Post-requisites	58
Removing the palm-rest assembly	59
Prerequisites	59
Procedure	59
Replacing the palm-rest assembly	60
Procedure	60
Post-requisites	60
Drivers and downloads	61
System setup	62
Entering BIOS setup program	62
Navigation keys	62
Boot Sequence	62
One time boot menu	63
System setup options	63
Clearing CMOS settings	73
Clearing BIOS (System Setup) and System passwords	74
Troubleshooting	75
SupportAssist diagnostics	75
System-diagnostic lights	75
Recovering the operating system	76
Flashing the BIOS	76
Flashing BIOS (USB key)	77
Backup media and recovery options	77
Drain residual flea power (perform hard reset)	77
WiFi power cycle	77

Dell XPS 13 9305 Service Manual - Page 76

Recovering the operating system, Flashing the BIOS

Page 76 highlights