HP ProBook 445 G9 Maintenance And Service Manual page 8

Cleaning your computer ...................................................................................................................................... 34
Packaging and transporting guidelines .............................................................................................................. 36
Accessing support information ........................................................................................................................... 36
5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 38
Component replacement procedures .................................................................................................................. 38
6 Removal and replacement procedures for authorized service provider parts .................................................... 48
Component replacement procedures .................................................................................................................. 48
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Personal grounding methods and equipment .................................................................................. 32
Grounding the work area ................................................................................................................... 33
Recommended materials and equipment ........................................................................................ 33
Enabling HP Easy Clean (select products only) ................................................................................. 34
Removing dirt and debris from your computer ................................................................................ 34
Cleaning your computer with a disinfectant ..................................................................................... 35
Caring for wood veneer (select products only) ................................................................................. 36
Preparation for disassembly ............................................................................................................. 38
Bottom cover ..................................................................................................................................... 38
Using a SIM card (select products only) ............................................................................................ 39
Determining the correct SIM card size for your computer ............................................. 39
Inserting a SIM card in an external slot .......................................................................... 40
Memory modules ............................................................................................................................... 40
WLAN module .................................................................................................................................... 42
WWAN module ................................................................................................................................... 43
Solid-state drive ................................................................................................................................ 46
Preparation for disassembly ............................................................................................................. 48
Battery ............................................................................................................................................... 48
RTC battery ........................................................................................................................................ 50
I/O board ............................................................................................................................................ 50
Touchpad ........................................................................................................................................... 51
Fan ..................................................................................................................................................... 52
Fingerprint reader board ................................................................................................................... 53
Heat sink ............................................................................................................................................ 54
System board .................................................................................................................................... 55
Speaker .............................................................................................................................................. 58
Power connector cable ...................................................................................................................... 58
Display assembly ............................................................................................................................... 59
Top cover with keyboard ................................................................................................................... 69