HP EliteBook 820 G1, HP EliteBook 725 G2, & EliteBook 720 G1 Notebook PCs - Maintenance and Service Guide

Display assembly components ........................................................................................................................... 35
Plastics Kit ........................................................................................................................................................... 38
Mass storage devices .......................................................................................................................................... 39
Miscellaneous parts ............................................................................................................................................. 40
Sequential part number listing ........................................................................................................................... 43
4 Removal and replacement preliminary requirements ..................................................................................... 62
Tools required ...................................................................................................................................................... 62
Service considerations ........................................................................................................................................ 62
Plastic parts ....................................................................................................................................... 62
Cables and connectors ...................................................................................................................... 63
Drive handling ................................................................................................................................... 63
Grounding guidelines ........................................................................................................................................... 63
Electrostatic discharge damage ....................................................................................................... 63
Packaging and transporting guidelines ......................................................................... 65
Workstation guidelines ................................................................................ 65
5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 67
Component replacement procedures ................................................................................................................. 67
Service cover ..................................................................................................................................... 67
Battery ............................................................................................................................................... 69
Hard drive .......................................................................................................................................... 71
WWAN module ................................................................................................................................... 74
Solid-state drive ................................................................................................................................ 76
WLAN module .................................................................................................................................... 78
Memory module ................................................................................................................................ 80
Keyboard ........................................................................................................................................... 81
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 88
Component replacement procedures ................................................................................................................. 88
RTC battery ........................................................................................................................................ 88
Top cover ........................................................................................................................................... 89
Display assembly .............................................................................................................................. 93
TouchPad ......................................................................................................................................... 100
Card reader board ........................................................................................................................... 101
Heat sink .......................................................................................................................................... 103
Fan ................................................................................................................................................... 105
System board .................................................................................................................................. 107
Fingerprint reader board ................................................................................................................. 115
Speaker assembly ........................................................................................................................... 116
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