HP ZBook 14u G4

5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 29
Component replacement procedures .................................................................................................................. 29
Bottom cover ..................................................................................................................................... 29
Battery ............................................................................................................................................... 34
Hard drive .......................................................................................................................................... 35
Solid-state drive (SSD) ...................................................................................................................... 37
Memory modules ............................................................................................................................... 38
WLAN/Bluetooth combo card ............................................................................................................ 40
WWAN module ................................................................................................................................... 42
Keyboard ........................................................................................................................................... 44
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 47
Component replacement procedures .................................................................................................................. 47
RTC battery ........................................................................................................................................ 48
Internal base plate ............................................................................................................................ 49
Heat sink/fan assembly .................................................................................................................... 51
Fingerprint reader assembly ............................................................................................................. 53
Touchpad board ................................................................................................................................. 55
NFC module ....................................................................................................................................... 56
Smart card reader board ................................................................................................................... 57
USB/audio board ................................................................................................................................ 59
System board .................................................................................................................................... 60
Speaker assembly ............................................................................................................................. 63
Display assembly ............................................................................................................................... 64
Power button board .......................................................................................................................... 71
Top cover ........................................................................................................................................... 73
7 Interpreting system validation diagnostic front panel LEDs and audible codes ................................................. 74
8 Troubleshooting guide ................................................................................................................................. 76
Resources ............................................................................................................................................................. 77
General troubleshooting steps ............................................................................................................................ 77
Identify the issue ............................................................................................................................... 78
1. Understand the issue .................................................................................................. 78
Boot up sequence ......................................................................................... 78
Failure classication ..................................................................................... 78
2. Examine the environment .......................................................................................... 80
3. Perform a visual inspection of hardware ................................................................... 81
4. Update BIOS and drivers ............................................................................................. 81
Manually updating BIOS and drivers ............................................................ 81
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