Table Of Contents - Dell Latitude 7220EX Service Manual

Chapter 1: Working on your tablet................................................................................................. 5
Safety instructions.............................................................................................................................................................. 5
Before working inside the tablet................................................................................................................................ 5
Safety precautions........................................................................................................................................................ 6
Electrostatic discharge-ESD protection............................................................................................................... 6
ESD field service kit ..................................................................................................................................................... 7
After working inside the tablet................................................................................................................................... 8
Chapter 2: Major components of the tablet................................................................................... 9
Chapter 3: Field service information.............................................................................................11
Safety instructions............................................................................................................................................................. 11
Before working inside the tablet.............................................................................................................................. 12
Safety precautions....................................................................................................................................................... 12
Electrostatic discharge-ESD protection.............................................................................................................. 12
User warning guide...................................................................................................................................................... 13
ESD field service kit ....................................................................................................................................................13
After working inside the tablet................................................................................................................................. 14
Recommended tools..........................................................................................................................................................14
Screw list............................................................................................................................................................................. 15
Customer Replaceable Units (CRU) and Field Replaceable Units (FRU) list...................................................... 16
Disassembly and reassembly .......................................................................................................................................... 17
Batteries cover assembly........................................................................................................................................... 18
System cover................................................................................................................................................................ 21
Batteries........................................................................................................................................................................ 24
Subscriber Identification Module (SIM) card........................................................................................................27
Stylus..............................................................................................................................................................................28
Display assembly.......................................................................................................................................................... 30
SSD Heat sink...............................................................................................................................................................38
System fan.................................................................................................................................................................... 40
Solid-state drive...........................................................................................................................................................42
WLAN card....................................................................................................................................................................44
WWAN card.................................................................................................................................................................. 47
Microphone................................................................................................................................................................... 49
Front camera................................................................................................................................................................. 51
Coin-cell battery.......................................................................................................................................................... 55
System board............................................................................................................................................................... 58
Rear Camera................................................................................................................................................................. 64
Micro serial port and power connector port.........................................................................................................66
Chapter 4: System setup............................................................................................................. 69
Boot menu...........................................................................................................................................................................69
Navigation keys..................................................................................................................................................................69
Boot Sequence...................................................................................................................................................................70
Contents
Contents 3