Dell Precision 3550 - Page 53

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3. Disconnect the DC-in port cable from the connector on the system board and remove it from the computer [1,2].

Disassembly and reassembly

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Table of Contents3
Working on Your Computer6
Safety Instructions6
Before Working Inside Your Computer6
Safety Precautions7
Electrostatic Discharge-ESD Protection7
ESD Field Service Kit8
Transporting Sensitive Components9
After Working Inside Your Computer9
Technology and Components10
USB Features10
USB Type-C11
HDMI 1.4A13
Power Button LED Behavior14
Major Components of Your System16
Disassembly and Reassembly18
Microsd Card18
Removing Microsd Card18
Installing Microsd Card18
Base Cover19
Removing the Base Cover19
Installing the Base Cover21
Battery24
Lithium-Ion Battery Precautions24
Removing the Battery24
Installing the Battery26
Memory Modules28
Removing the Memory28
Installing the Memory29
WLAN Card30
Removing the Wireless Card30
Installing the Wireless Card31
Solid State Drive32
Removing the Solid State Drive32
Installing the Solid State Drive33
Solid State Drive Bracket34
Removing the Solid State Drive Bracket34
Installing the Solid State Drive Bracket35
Palmrest Bracket36
Removing the Palmrest Bracket36
Installing the Palmrest Bracket38
Speaker40
Removing the Speakers40
Installing the Speakers42
Heat Sink44
Removing the Heatsink44
Installing the Heatsink46
System Fan48
Removing the System Fan48
Installing the System Fan50
Power-Adapter Port52
Removing the DC-In Port52
Installing the DC-In Port54
LED Board56
Removing the LED Board56
Installing the LED Board59
Touchpad Buttons61
Removing the Touchpad Buttons Board61
Installing the Touchpad Buttons Board63
System Board65
Removing the System Board65
Installing the System Board68
Coin-Cell Battery71
Removing the Coin Cell Battery71
Installing the Coin Cell Battery72
Display Assembly73
Removing the LCD Assembly73
Installing the LCD Assembly75
Keyboard Lattice and Keyboard78
Removing the Keyboard78
Installing the Keyboard80
Keyboard Bracket82
Removing the Keyboard Bracket82
Installing the Keyboard Bracket83
Smart Card Reader Board85
Removing the Smart Card Reader85
Installing the Smart Card Reader86
Display Bezel88
Removing the Display Bezel88
Installing the Display Bezel90
Hinge Caps92
Removing Hinge Caps92
Installing Hinge Caps93
Display Hinges94
Removing Display Hinge94
Installing Display Hinge95
Display Panel96
Removing Display Panel96
Installing Display Panel99
Camera101
Removing Camera101
Installing the Camera102
Display (Edp) Cable103
Removing Display Cable103
Installing Display Cable104
Display Back Cover Assembly105
Replacing the Display Back Cover105
Palmrest Assembly106
Replacing the Palmrest and Keyboard Assembly106
Troubleshooting109
Enhanced Pre-Boot System Assessment (Epsa) Diagnostics109
Running the Epsa Diagnostics109
System Diagnostic Lights109
Wifi Power Cycle110
Getting Help111
Contacting Dell111

Dell Precision 3550 - Page 53

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