Chapter 1: Working inside your computer...................................................................................... 6
Safety instructions.............................................................................................................................................................. 6
Before working inside your computer.......................................................................................................................6
Safety precautions.........................................................................................................................................................7
Electrostatic discharge—ESD protection................................................................................................................7
ESD field service kit ..................................................................................................................................................... 8
Transporting sensitive components.......................................................................................................................... 9
After working inside your computer..........................................................................................................................9
BitLocker..........................................................................................................................................................................9
Chapter 2: Removing and installing components.......................................................................... 10
Recommended tools..........................................................................................................................................................10
Screw list............................................................................................................................................................................. 10
Major components of Latitude 3540............................................................................................................................. 11
Base cover........................................................................................................................................................................... 13
Removing the base cover...........................................................................................................................................13
Installing the base cover.............................................................................................................................................15
Battery..................................................................................................................................................................................15
Lithium-ion battery precautions............................................................................................................................... 15
Removing the battery................................................................................................................................................. 15
Installing the battery....................................................................................................................................................16
Battery cable....................................................................................................................................................................... 17
Removing the battery cable.......................................................................................................................................17
Installing the battery cable.........................................................................................................................................18
Memory modules................................................................................................................................................................19
Removing the memory module................................................................................................................................. 19
Installing the memory modules.................................................................................................................................20
M.2 solid-state drive......................................................................................................................................................... 21
Removing the M.2 2230 solid-state drive..............................................................................................................21
Installing the M.2 2230 solid-state drive............................................................................................................... 22
Removing the M.2 2280 solid-state drive............................................................................................................. 23
Installing the M.2 2280 solid-state drive............................................................................................................... 24
Wireless card...................................................................................................................................................................... 25
Removing the wireless card......................................................................................................................................25
Installing the wireless card........................................................................................................................................ 26
Wireless Wide Area Network (WWAN) card.............................................................................................................. 28
Removing the WWAN card....................................................................................................................................... 28
Installing the WWAN card......................................................................................................................................... 28
Fan........................................................................................................................................................................................ 29
Removing the thermal fan.........................................................................................................................................29
Installing the thermal fan........................................................................................................................................... 30
Coin-cell battery.................................................................................................................................................................31
Removing the coin-cell battery.................................................................................................................................31
Installing the coin-cell battery.................................................................................................................................. 32
Contents
Contents 3
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