Dell XPS 13 7390 Service Manual - Page 6

Entering BIOS setup program

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63

Navigation keys

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63

Boot Sequence

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64

System setup options

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64

Clearing CMOS settings

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68

Clearing BIOS (System Setup) and System passwords

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69

36 Troubleshooting

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70

Enhanced Pre-Boot System Assessment (ePSA) diagnostics

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70

Running the ePSA diagnostics

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70

System diagnostic lights

.....................................................................................................................................................

70

Recovering the operating system

......................................................................................................................................

71

Flashing BIOS (USB key)

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71

Flashing the BIOS

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72

Flea power release

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72

Wi-Fi power cycle

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72

37 Getting help and contacting Dell

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73

6

Contents

Section	Page
XPS 13 7390 Service Manual	3
Before working inside your computer	7
Before you begin	7
After working inside your computer	8
Safety instructions	9
Electrostatic discharge—ESD protection	9
ESD field service kit	10
Transporting sensitive components	11
Recommended tools	12
Screw list	13
Removing the base cover	15
Procedure	15
Replacing the base cover	17
Procedure	17
Removing the battery	19
Lithium-ion battery precautions	19
Prerequisites	19
Procedure	19
Replacing the battery	21
Lithium-ion battery precautions	21
Procedure	21
Post-requisites	22
Removing the solid-state drive	23
Prerequisites	23
Procedure to remove M.2 2280 solid-state drive	23
Procedure to remove M.2 2230 solid-state drive	24
Replacing the solid-state drive	25
Procedure to replace 2280 solid-state drive	25
Procedure to replace 2230 solid-state drive	25
Post-requisites	26
Removing the speakers	27
Prerequisites	27
Procedure	27
Replacing the speakers	28
Procedure	28
Post-requisites	28
Removing the coin-cell battery	29
Prerequisites	29
Procedure	29
Replacing the coin-cell battery	30
Procedure	30
Post-requisites	30
Removing the heat sink	31
Prerequisites	31
Procedure	31
Replacing the heat sink	32
Procedure	32
Post-requisites	32
Removing the heat-sink assembly	33
Prerequisites	33
Procedure	33
Replacing the heat-sink assembly	35
Procedure	35
Post-requisites	36
Removing the display assembly	37
Prerequisites	37
Procedure	37
Replacing the display assembly	39
Procedure	39
Post-requisites	40
Removing the headset port	41
Prerequisites	41
Procedure	41
Replacing the headset port	43
Procedure	43
Post-requisites	44
Removing the fans	45
Prerequisites	45
Procedure	45
Replacing the fans	47
Procedure	47
Post-requisites	48
Removing the system board	49
Prerequisites	49
Procedure	49
Replacing the system board	51
Procedure	51
Post-requisites	52
Entering the Service Tag in the BIOS setup program	52
Removing the power button with optional fingerprint reader	54
Prerequisites	54
Procedure	54
Replacing the power button with optional fingerprint reader	56
Procedure	56
Post-requisites	56
Removing the keyboard	58
Prerequisites	58
Procedure	58
Replacing the keyboard	59
Procedure	59
Post-requisites	59
Removing the palm-rest assembly	60
Prerequisites	60
Procedure	60
Replacing the palm-rest assembly	61
Procedure	61
Post-requisites	61
Device drivers	62
Intel Chipset Software Installation Utility	62
Video drivers	62
Intel Serial IO driver	62
Intel Trusted Execution Engine Interface	62
Intel Virtual Button driver	62
Wireless and Bluetooth drivers	62
System setup	63
System setup	63
Entering BIOS setup program	63
Navigation keys	63
Boot Sequence	64
System setup options	64
Clearing CMOS settings	68
Clearing BIOS (System Setup) and System passwords	69
Troubleshooting	70
Enhanced Pre-Boot System Assessment (ePSA) diagnostics	70
Running the ePSA diagnostics	70
System diagnostic lights	70
Recovering the operating system	71
Flashing BIOS (USB key)	71
Flashing the BIOS	72
Flea power release	72
Wi-Fi power cycle	72

Dell XPS 13 7390 Service Manual - Page 6

Clearing BIOS System Setup and System passwords, Enhanced Pre-Boot System Assessment ePSA diagnostics

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