Maintenance and Service Guide
5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 35
Component replacement procedures .................................................................................................................. 35
Service door ....................................................................................................................................... 36
Service door for use in standard models ........................................................................ 36
Service door and rear cover for use in federal models .................................................. 37
Battery ............................................................................................................................................... 39
Battery for use in standard models ................................................................................ 39
Battery for use in federal models ................................................................................... 41
Hard drive .......................................................................................................................................... 42
Hard drive for use in standard models ........................................................................... 42
Hard drive for use in federal models .............................................................................. 44
Solid-state drives (M.2) ..................................................................................................................... 48
WLAN module .................................................................................................................................... 50
WWAN module ................................................................................................................................... 52
Memory module ................................................................................................................................ 54
6 Removal and replacement procedures for authorized service provider parts .................................................... 56
Component replacement procedures .................................................................................................................. 56
RTC battery ........................................................................................................................................ 57
Middle frame ..................................................................................................................................... 58
Hard drive connector board and cable (federal models) .................................................................. 60
Speakers ............................................................................................................................................ 62
TouchPad ........................................................................................................................................... 64
Smart Card reader board ................................................................................................................... 65
Fingerprint reader board ................................................................................................................... 67
Fans ................................................................................................................................................... 68
Discrete graphics board .................................................................................................................... 69
Display LED board ............................................................................................................................. 70
Heat sink ............................................................................................................................................ 71
Keyboard ........................................................................................................................................... 75
System board .................................................................................................................................... 77
Display assembly ............................................................................................................................... 81
Top cover ........................................................................................................................................... 88
7 Troubleshooting guide ................................................................................................................................. 89
Resources ............................................................................................................................................................. 90
General troubleshooting steps ............................................................................................................................ 90
Identify the issue ............................................................................................................................... 91
1. Understand the issue .................................................................................................. 91
Boot up sequence ......................................................................................... 91
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