Dell EMC Latitude 5420 - Default Chapter; Table of Contents

Chapter 1: Working inside your computer...................................................................................... 5
Before working inside your computer.............................................................................................................................5
Safety precautions.............................................................................................................................................................. 5
Enter service mode............................................................................................................................................................. 6
Electrostatic discharge—ESD protection..................................................................................................................... 8
ESD field service kit ........................................................................................................................................................... 9
After working inside your computer................................................................................................................................9
Chapter 2: Major components of your computer........................................................................... 11
Chapter 3: Removing and installing components.......................................................................... 14
Recommended tools..........................................................................................................................................................14
Screw list..............................................................................................................................................................................14
Disassembly and reassembly .......................................................................................................................................... 15
Subscriber Identity Module (SIM) card.................................................................................................................. 15
Micro Secure Digital (SD) Card................................................................................................................................ 17
Base cover..................................................................................................................................................................... 19
WLAN card....................................................................................................................................................................22
WWAN card.................................................................................................................................................................. 25
Solid-state drive...........................................................................................................................................................27
Memory modules.......................................................................................................................................................... 31
Battery........................................................................................................................................................................... 32
Battery cable................................................................................................................................................................ 36
Assembly inner frame................................................................................................................................................. 38
LED board.......................................................................................................................................................................41
Heat sink........................................................................................................................................................................43
Speakers........................................................................................................................................................................ 45
System board................................................................................................................................................................47
Power-button board....................................................................................................................................................51
Smart card reader....................................................................................................................................................... 53
Keyboard assembly..................................................................................................................................................... 55
Keyboard bracket........................................................................................................................................................ 57
Display assembly..........................................................................................................................................................60
Display bezel................................................................................................................................................................. 64
Display panel................................................................................................................................................................. 66
Camera/microphone module.................................................................................................................................... 72
eDP/display cable........................................................................................................................................................73
Sensor board.................................................................................................................................................................75
Display hinges............................................................................................................................................................... 77
Display back cover...................................................................................................................................................... 80
Dummy SIM-card slot filler........................................................................................................................................ 81
Palm-rest assembly.....................................................................................................................................................84
Chapter 4: Software.................................................................................................................... 86
Contents
Contents 3