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Dell Vostro 5625 Service Manual - Page 48

System board, Removing the system board

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System board Removing the system board Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the memory module. 4. Remove the M.2 2230 solid-state drive or M.2 2280 solid-state drive, whichever is applicable. 5. Remove the wireless card. 6. Remove the heatsink. About this task The following image(s) indicate the location of the system board and provides a visual representation of the removal procedure. 1. Display-cable connector 2. Power-cable connector 3. Keyboard backlight-cable connector 4. Keyboard-cable connector 5. Touchpad-cable connector 6. Battery-cable connector 7. Speaker-cable connector 8. System fan-cable connector 9. SSD-1 slot connector 10. I/O board-cable connector 48 Removing and installing components

Section	Page
Vostro 5625 Service Manual	1
Contents	3
Working inside your computer	6
Safety instructions	6
Before working inside your computer	6
Safety precautions	7
Electrostatic discharge—ESD protection	7
ESD field service kit	8
Transporting sensitive components	9
After working inside your computer	9
Removing and installing components	10
Recommended tools	10
Screw list	10
Major components of Vostro 5625	11
Base cover	13
Removing the base cover	13
Installing the base cover	15
Battery	17
Lithium-ion battery precautions	17
Removing the 3-cell battery	18
Installing the 3-cell battery	18
Removing the 4-cell battery	19
Installing the 4-cell battery	20
Memory modules	21
Removing the memory module	21
Installing the memory module	22
Solid-state drives	24
Removing the M.2 2230 solid-state drive	24
Installing the M.2 2230 solid-state drive	25
Removing the M.2 2280 solid-state drive	26
Installing the M.2 2280 solid-state drive	27
Wireless card	28
Removing the wireless card	28
Installing the wireless card	29
Fan	31
Removing the fan	31
Installing the fan	31
Coin-cell battery	32
Removing the coin-cell battery	32
Installing the coin-cell battery	33
Heat sink	34
Removing the heatsink	34
Installing the heatsink	36
Display assembly	37
Removing the display assembly	37
Installing the display assembly	39
I/O board	40
Removing the I/O board	40
Installing the I/O board	42
Touchpad	43
Removing the touchpad	43
Installing the touchpad	44
Speakers	45
Removing the speakers	45
Installing the speakers	46
System board	48
Removing the system board	48
Installing the system board	50
Power button with optional fingerprint reader	52
Removing the power button with optional fingerprint reader	52
Installing the power button with optional fingerprint reader	53
Power-adapter port	54
Removing the power-adapter port	54
Installing the power-adapter port	54
Palm-rest and keyboard assembly	55
Removing the palm-rest and keyboard assembly	55
Installing the palm-rest and keyboard assembly	56
Drivers and downloads	58
BIOS setup	59
BIOS overview	59
Entering BIOS setup program	59
Navigation keys	59
One time boot menu	60
System setup options	60
System and setup password	65
Assigning a system setup password	65
Deleting or changing an existing system setup password	66
Clearing CMOS settings	66
Clearing BIOS (System Setup) and System passwords	66
Updating the BIOS	67
Updating the BIOS in Windows	67
Updating the BIOS using the USB drive in Windows	67
Updating the BIOS from the F12 One-Time boot menu	68
Troubleshooting	69
Handling swollen Lithium-ion batteries	69
Dell SupportAssist Pre-boot System Performance Check diagnostics	69
Running the SupportAssist Pre-Boot System Performance Check	70
Built-in self-test (BIST)	70
M-BIST	70
LCD Power rail test (L-BIST)	71
LCD Built-in Self Test (BIST)	71
System-diagnostic lights	71
Real-Time Clock (RTC Reset)	72
Recovering the operating system	73
Backup media and recovery options	73
WiFi power cycle	73
Drain residual flea power (perform hard reset)	73