Dell Latitude 5400 Service Manual - Page 5

Display hinges

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

100

Removing display hinge

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100

Installing display hinge

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101

Display (eDP) cable

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

102

Removing display cable

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

102

Installing display cable

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

103

Display back cover assembly

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104

Replacing the display back cover

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104

Palmrest assembly

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105

Replacing the palmrest and keyboard assembly

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

105

5 Troubleshooting

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108

Enhanced Pre-Boot System Assessment (ePSA) diagnostics

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

108

Running the ePSA diagnostics

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108

System diagnostic lights

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108

WiFi power cycle

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

109

6 Getting help

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110

Contacting Dell

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

110

Contents

5

Section	Page
Dell Latitude 5400 Service Manual	3
Working on 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	8
After working inside your computer	9
Technology and components	10
USB features	10
USB Type-C	11
HDMI 1.4a	13
Power button LED behavior	14
Major components of your system	16
Disassembly and reassembly	18
MicroSD card	18
Removing the microSD card	18
Installing the microSD card	18
Base cover	19
Removing the base cover	19
Installing the base cover	21
Battery	24
Lithium-ion battery precautions	24
Removing the battery	24
Installing the battery	26
WWAN card	28
Removing the WWAN card	28
Installing the WWAN card	29
WLAN card	29
Removing the WLAN card	29
Installing the WLAN card	30
Coin-cell battery	31
Removing the coin-cell battery	31
Installing the coin-cell battery	32
Memory modules	33
Removing the memory module	33
Installing the memory module	34
DC-in port	35
Removing the DC-in port	35
Installing the DC-in port	37
Solid state drive	39
Removing the M.2 SSD	39
Installing the M.2 SSD	40
Solid state drive bracket	41
Removing the solid state drive bracket	41
Installing the solid state drive bracket	42
Inner frame	43
Removing the inner frame	43
Installing the inner frame	45
SmartCard reader	47
Removing the SmartCard reader	47
Installing the SmartCard reader	49
Touchpad buttons	51
Removing the touchpad button board	51
Installing the touchpad button board	53
LED board	55
Removing the LED board	55
Installing the LED board	57
Speakers	59
Removing the speakers	59
Installing the speakers	60
Heatsink assembly	62
Removing the heatsink assembly	62
Installing the heatsink assembly	64
System board	66
Removing the system board	66
Installing the system board	70
Keyboard	74
Removing the keyboard	74
Installing the keyboard	76
Keyboard bracket	78
Removing the keyboard bracket	78
Installing the keyboard bracket	79
Power button	80
Removing the power button with fingerprint reader	80
Installing the power button with fingerprint reader	81
Display assembly	82
Removing the display assembly	82
Installing the display assembly	85
Display bezel	88
Removing display bezel	88
Installing the display bezel	90
Display panel	92
Removing display panel	92
Installing display panel	95
Camera	96
Removing camera	96
Installing camera	97
Hinge caps	98
Removing hinge caps	98
Installing hinge caps	99
Display hinges	100
Removing display hinge	100
Installing display hinge	101
Display (eDP) cable	102
Removing display cable	102
Installing display cable	103
Display back cover assembly	104
Replacing the display back cover	104
Palmrest assembly	105
Replacing the palmrest and keyboard assembly	105
Troubleshooting	108
Enhanced Pre-Boot System Assessment (ePSA) diagnostics	108
Running the ePSA diagnostics	108
System diagnostic lights	108
WiFi power cycle	109
Getting help	110

Dell Latitude 5400 Service Manual - Page 5

Troubleshooting, Getting help, Enhanced Pre-Boot System Assessment ePSA diagnostics

Page 5 highlights