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Installing the power button with finger reader - UMA

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4. Remove the two screws (M2x2.5) that secure the power button with optional fingerprint reader to the palm-rest and keyboard assembly. 5. Lift the power button with optional fingerprint reader, along with the fingerprint reader cable, off the palm-rest and keyboard assembly. Installing the power button with finger reader - UMA Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the power button with fingerprint reader and provides a visual representation of the installation procedure. Steps 1. Using the alignment post, place the power button with fingerprint reader on the palm-rest and keyboard assembly. 2. Replace the two screws (M2x2.5) to secure the power button with optional fingerprint reader to the palm-rest and keyboard assembly. 3. Plug the I/O cable into the connector on palm-rest and keyboard assembly and close the latch. 4. Plug the fingerprint reader cable into the connector on palm-rest and keyboard assembly. Next steps 1. Install the I/O board. 2. Install the system fan. 3. Install the coin-cell battery. 4. Install the M.2 2280 SSD or M.2 2230 SSD. 5. Install the battery. 6. Install the base cover. 7. Follow the procedure in after working inside your computer. Disassembly and reassembly 61

Section	Page
Vostro 5401 Service Manual	3
Working on your computer	7
Safety instructions	7
Before working inside your computer	7
Safety precautions	8
Electrostatic discharge—ESD protection	8
ESD field service kit	9
After working inside your computer	10
Major components of your system	11
Disassembly and reassembly	13
Recommended tools	13
Screw list	13
Base cover	15
Removing the base cover	15
Installing the base cover	16
Battery	18
Lithium-ion battery precautions	18
Removing the 3-cell battery - UMA/discrete	19
Installing the 3-cell battery - UMA/discrete	20
Removing the 4-cell battery - UMA/discrete	21
Installing the 4-cell battery - UMA/discrete	21
WLAN card	22
Removing the WLAN card - UMA	22
Installing the WLAN card - UMA	23
Removing the WLAN card - discrete	24
Installing the WLAN card - discrete	25
Memory modules	26
Removing the memory modules - UMA	26
Installing the memory modules - UMA	27
Removing the memory modules - discrete	28
Installing the memory modules - discrete	29
Solid-state drive	31
Removing the M.2 2280 solid-state drive - UMA	31
Installing the M.2 2280 solid-state drive - UMA	31
Removing the M.2 2230 solid-state drive - UMA	32
Installing the M.2 2230 solid-state drive - UMA	33
Removing the M.2 2280 solid-state drive - SSD-1 - discrete	34
Installing the M.2 2280 solid-state drive - SSD-1 - discrete	34
Removing the M.2 2230 solid-state drive - SSD-1 - discrete	35
Installing the M.2 2230 solid-state drive - SSD-1 - discrete	36
Replacing the SSD-1 support bracket	37
Removing the M.2 2280 solid-state drive - SSD-2 - discrete	38
Installing the M.2 2280 solid-state drive - SSD-2 - discrete	39
Speakers	40
Removing the speakers (in 3-cell battery configuration)	40
Installing the speakers (in 3-cell battery configuration)	41
Removing the speakers (in 4-cell battery configuration)	42
Installing the speakers (in 4-cell battery configuration)	43
System fan	45
Removing the system fan - UMA	45
Installing the system fan - UMA	46
Removing the system fan - discrete	47
Installing the system fan - discrete	48
Heat sink	49
Removing the heat sink - UMA	49
Installing the heat sink - UMA	50
Removing the heat sink - discrete	50
Installing the heat sink - discrete	51
Coin-cell battery	52
Removing the coin-cell battery - UMA	52
Installing the coin-cell battery - UMA	53
Removing the coin-cell battery - discrete	54
Installing the coin-cell battery - discrete	54
I/O board	55
Removing the I/O board - UMA	55
Installing the I/O board - UMA	56
Removing the I/O board - discrete	58
Installing the I/O board - discrete	59
Power button with fingerprint reader (optional)	60
Removing the power button and optional fingerprint reader - UMA	60
Installing the power button with finger reader - UMA	61
Removing the power button and optional fingerprint reader - discrete	62
Installing the power button with finger reader - discrete	62
DC-in port	63
Removing the DC-in port - UMA	63
Installing the DC-in port - UMA	64
Removing the DC-in port - discrete	65
Installing the DC-in port - discrete	66
Touchpad	67
Removing the touchpad - UMA	67
Installing the touchpad - UMA	69
Removing the touchpad - discrete	70
Installing the touchpad - discrete	71
Display assembly	72
Removing the display assembly - UMA	72
Installing the display assembly - UMA	74
Removing the display assembly - discrete	75
Installing the display assembly - discrete	78
System board	80
Removing the system board - UMA	80
Installing the system board - UMA	82
Removing the system board - discrete	85
Installing the system board - discrete	87
Palm-rest and keyboard assembly	90
Removing the palm-rest and keyboard assembly - UMA	90
Installing the palm-rest and keyboard assembly - UMA	91
Removing the palm-rest and keyboard assembly - discrete	92
Installing the palm-rest and keyboard assembly - discrete	93
Software	95
Downloading Windows drivers	95
System setup	96
Boot menu	96
Navigation keys	96
Boot Sequence	97
BIOS setup	97
Overview	97
Boot configuration	98
Integrated Devices	99
Storage	100
Display	100
Connection options	101
Power management	101
Security	102
Password	103
Update and Recovery	105
System management	105
Keyboard	106
Pre-boot behavior	107
Virtualization support	108
Performance	108
System logs	109
Updating the BIOS in Windows	109
Updating BIOS on systems with BitLocker enabled	110
Updating the Dell BIOS in Linux and Ubuntu environments	110
Flashing the BIOS from the F12 One-Time boot menu	110
System and setup password	113
Assigning a system setup password	113
Deleting or changing an existing system setup password	114
Troubleshooting	115
Built-in self-test (BIST)	115
System board built-in self-test (M-BIST)	116
Display panel power rail built-in self-test (L-BIST)	116
Display panel power rail built-in self-test (L-BIST)	117
Display panel built-in self-test (LCD-BIST)	117
Outcome	118
SupportAssist diagnostics	118
Running the SupportAssist diagnostics	118
System diagnostic lights	118
Recovering the operating system	120
Flashing the BIOS	120
Flashing BIOS (USB key)	120
Backup media and recovery options	120
WiFi power cycle	121
Releasing Ethernet (RJ-45) cable	121
Getting help	122

Match case Limit results 1 per page

Remove the two screws (M2x2.5) that secure the power button with optional fingerprint reader to the palm-rest and

keyboard assembly.

Lift the power button with optional fingerprint reader, along with the fingerprint reader cable, off the palm-rest and

keyboard assembly.

Installing the power button with finger reader - UMA

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The figure indicates the location of the power button with fingerprint reader and provides a visual representation of the

installation procedure.

Steps

Using the alignment post, place the power button with fingerprint reader on the palm-rest and keyboard assembly.

Replace the two screws (M2x2.5) to secure the power button with optional fingerprint reader to the palm-rest and keyboard

assembly.

Plug the I/O cable into the connector on palm-rest and keyboard assembly and close the latch.

Plug the fingerprint reader cable into the connector on palm-rest and keyboard assembly.

Next steps

Install the

I/O board

Install the

system fan

Install the

coin-cell battery

Install the

M.2 2280 SSD

M.2 2230 SSD

Install the

battery

Install the

base cover

Follow the procedure in

after working inside your computer

Disassembly and reassembly