Table Of Contents - Dell Latitude 9420 Service Manual

Chapter 1: Working inside your computer...................................................................................... 6
Before working inside your computer.............................................................................................................................6
Safety precautions.............................................................................................................................................................. 6
Entering Service Mode....................................................................................................................................................... 7
Exiting Service Mode.......................................................................................................................................................... 7
Electrostatic discharge-ESD protection......................................................................................................................7
ESD field service kit ........................................................................................................................................................... 8
After working inside your computer................................................................................................................................9
Chapter 2: Removing and installing components.......................................................................... 10
Recommended tools..........................................................................................................................................................10
Screw list.............................................................................................................................................................................. 11
Major components of your computer............................................................................................................................13
Secure Digital (SD) Card..................................................................................................................................................14
Removing the SD card................................................................................................................................................ 14
Installing the SD card.................................................................................................................................................. 14
SIM card tray...................................................................................................................................................................... 15
Removing the SIM card tray..................................................................................................................................... 15
Installing the SIM card tray........................................................................................................................................16
Base cover........................................................................................................................................................................... 17
Removing the base cover...........................................................................................................................................17
Installing the base cover.............................................................................................................................................19
Solid-state drive................................................................................................................................................................ 20
Removing the solid-state drive................................................................................................................................ 20
Installing the solid-state drive................................................................................................................................... 21
Wireless Wide Area Network (WWAN) Card..............................................................................................................22
Removing the WWAN card....................................................................................................................................... 22
Installing the WWAN card......................................................................................................................................... 24
System fan.......................................................................................................................................................................... 25
Removing the system fan..........................................................................................................................................25
Installing the system fan............................................................................................................................................26
Heat sink.............................................................................................................................................................................. 27
Removing the heat sink ............................................................................................................................................ 27
Installing the heat sink................................................................................................................................................28
Display assembly................................................................................................................................................................30
Removing the display assembly............................................................................................................................... 30
Installing the display assembly..................................................................................................................................32
Battery................................................................................................................................................................................. 33
Lithium-ion battery precautions...............................................................................................................................33
Removing the battery.................................................................................................................................................34
Installing the battery...................................................................................................................................................36
Speakers.............................................................................................................................................................................. 37
Removing the left speaker........................................................................................................................................ 37
Installing the left speaker.......................................................................................................................................... 38
Contents
Contents 3