Dell Latitude 7420 - default chapter; Table of Contents

Chapter 1: Working on your computer........................................................................................... 6
Safety instructions.............................................................................................................................................................. 6
Service mode.................................................................................................................................................................. 6
Before working inside your computer.......................................................................................................................8
Safety precautions........................................................................................................................................................ 9
Electrostatic discharge—ESD protection............................................................................................................... 9
ESD field service kit ................................................................................................................................................... 10
Transporting sensitive components......................................................................................................................... 11
After working inside your computer......................................................................................................................... 11
Chapter 2: Removing and installing components.......................................................................... 12
Recommended tools..........................................................................................................................................................12
Screw List............................................................................................................................................................................ 12
Major components of your system................................................................................................................................ 15
micro-SD card.....................................................................................................................................................................16
Removing the micro-SD card....................................................................................................................................16
Installing the micro-SD card...................................................................................................................................... 17
SIM card tray.......................................................................................................................................................................17
Removing the SIM card tray......................................................................................................................................17
Installing the SIM card tray........................................................................................................................................18
Base cover........................................................................................................................................................................... 19
Removing the base cover...........................................................................................................................................19
Installing the base cover.............................................................................................................................................21
Solid-state drive................................................................................................................................................................ 22
Removing the solid-state drive................................................................................................................................ 22
Installing the solid-state drive.................................................................................................................................. 23
WWAN card........................................................................................................................................................................ 24
Removing the WWAN card....................................................................................................................................... 24
Installing the WWAN card......................................................................................................................................... 26
Battery................................................................................................................................................................................. 27
Rechargeable Li-ion battery precautions...............................................................................................................27
Removing the 3-cell battery..................................................................................................................................... 27
Installing the 3-cell battery....................................................................................................................................... 28
Removing the 4-cell battery..................................................................................................................................... 30
Installing the 4-cell battery........................................................................................................................................ 31
Heat sink..............................................................................................................................................................................32
Removing the heatsink assembly.............................................................................................................................32
Installing the heatsink assembly...............................................................................................................................33
Palmrest antenna module................................................................................................................................................33
Removing the palmrest antenna module............................................................................................................... 33
Installing the palmrest antenna module..................................................................................................................34
Display assembly................................................................................................................................................................35
Removing the display assembly............................................................................................................................... 35
Installing the display assembly..................................................................................................................................38
Contents
Contents 3