
Heatsink assembly...............................................................................................................................................................40
Removing the heatsink assembly................................................................................................................................ 40
Installing the heatsink assembly....................................................................................................................................41
System Fan........................................................................................................................................................................... 41
Removing the system fan..............................................................................................................................................41
Installing the system fan............................................................................................................................................... 42
I/O board.............................................................................................................................................................................. 44
Removing the input and output board........................................................................................................................44
Installing the input and output board.......................................................................................................................... 45
DC-in port.............................................................................................................................................................................46
Removing the DC-in......................................................................................................................................................46
Installing the DC-in.........................................................................................................................................................47
World facing camera........................................................................................................................................................... 48
Removing the world-facing camera............................................................................................................................ 48
Installing the world-facing camera.............................................................................................................................. 49
Touchpad buttons............................................................................................................................................................... 49
Removing the touchpad .............................................................................................................................................. 49
Installing the touchpad...................................................................................................................................................51
System board.......................................................................................................................................................................53
Removing the system board........................................................................................................................................ 53
Installing the system board...........................................................................................................................................55
Display assembly..................................................................................................................................................................58
Removing the display assembly................................................................................................................................... 58
Installing the display assembly..................................................................................................................................... 59
LCD panel..............................................................................................................................................................................61
Removing the LCD panel...............................................................................................................................................61
Installing the LCD panel................................................................................................................................................ 62
5 Diagnostics................................................................................................................................64
ePSA Diagnostics................................................................................................................................................................ 64
Validation Tools ............................................................................................................................................................. 67
WiFi power cycle..................................................................................................................................................................73
Diagnostic LEDs................................................................................................................................................................... 74
M-BIST..................................................................................................................................................................................74
Self-Heal............................................................................................................................................................................... 75
Course Introduction.......................................................................................................................................................75
Self-Heal Instruction......................................................................................................................................................75
Supported Latitude Models..........................................................................................................................................75
BIOS recovery......................................................................................................................................................................76
BIOS recovery using hard drive................................................................................................................................... 76
BIOS recovery using USB drive....................................................................................................................................77
LCD Built-in Self Test .........................................................................................................................................................77
6 Getting help and contacting Dell.................................................................................................. 79
4Contents