Dell Latitude 7490 - Working on your computer; Safety precautions

Chapter 1: Working on your computer............................................................................................7
Safety precautions.............................................................................................................................................................. 7
Electrostatic discharge—ESD protection................................................................................................................7
ESD field service kit ..................................................................................................................................................... 8
Transporting sensitive components.......................................................................................................................... 9
Before working inside your computer.............................................................................................................................9
After working inside your computer................................................................................................................................9
Chapter 2: Removing and installing components.......................................................................... 10
Recommended tools..........................................................................................................................................................10
Screw size list.....................................................................................................................................................................10
Subscriber identification module card........................................................................................................................... 11
Removing SIM card or SIM card tray.......................................................................................................................11
Replacing SIM card...................................................................................................................................................... 12
Removing dummy SIM card tray ............................................................................................................................. 12
Base cover........................................................................................................................................................................... 13
Removing base cover.................................................................................................................................................. 13
Installing base cover.................................................................................................................................................... 14
Battery..................................................................................................................................................................................14
Lithium-ion battery precautions............................................................................................................................... 14
Removing battery.........................................................................................................................................................15
Installing battery...........................................................................................................................................................16
Solid state drive..................................................................................................................................................................16
Removing Solid State Drive.......................................................................................................................................16
Installing Solid State Drive......................................................................................................................................... 17
Speaker.................................................................................................................................................................................17
Removing speaker module......................................................................................................................................... 17
Installing speaker module........................................................................................................................................... 19
Coin cell battery................................................................................................................................................................. 19
Removing the coin cell battery................................................................................................................................. 19
Installing coin cell battery..........................................................................................................................................20
WWAN card........................................................................................................................................................................ 20
Removing WWAN card.............................................................................................................................................. 20
Installing WWAN card..................................................................................................................................................21
WLAN card..........................................................................................................................................................................22
Removing WLAN card................................................................................................................................................ 22
Installing WLAN card.................................................................................................................................................. 22
Memory modules............................................................................................................................................................... 23
Removing memory module........................................................................................................................................ 23
Installing memory module.......................................................................................................................................... 23
Heat sink..............................................................................................................................................................................24
Removing heat sink assembly...................................................................................................................................24
Installing heat sink assembly.....................................................................................................................................24
LED board........................................................................................................................................................................... 25
Contents
Contents 3