HP 255 G3 Maintenance And Service Manual page 6

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5 Removal and replacement procedures for Customer Self-Repair parts ............................................................. 31
Component replacement procedures ................................................................................................................. 31
6 Removal and replacement procedures for Authorized Service Provider parts ................................................... 39
Component replacement procedures ................................................................................................................. 39
Starting Setup Utility (BIOS) ................................................................................................................................ 73
Updating the BIOS ................................................................................................................................................ 73
Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................... 74
8 Using Setup Utility (BIOS) and System Diagnostics in Windows 7 ..................................................................... 77
Starting Setup Utility (BIOS) ................................................................................................................................ 77
Updating the BIOS ................................................................................................................................................ 77
Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................... 78
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Battery ............................................................................................................................................... 31
Optical drive ...................................................................................................................................... 33
Keyboard ........................................................................................................................................... 35
Display subcomponents (bezel, webcam, panel) ............................................................................. 39
Top cover ........................................................................................................................................... 43
Power button board .......................................................................................................................... 46
TouchPad button board .................................................................................................................... 47
Hard drive .......................................................................................................................................... 49
WLAN module .................................................................................................................................... 51
Fan ..................................................................................................................................................... 53
Power connector cable ...................................................................................................................... 55
System board .................................................................................................................................... 56
USB board .......................................................................................................................................... 59
Speakers ............................................................................................................................................ 60
Heat sink assembly ........................................................................................................................... 61
RTC battery ........................................................................................................................................ 64
Memory module ................................................................................................................................ 65
Display assembly .............................................................................................................................. 66
Determining the BIOS version ........................................................................................................... 73
Downloading a BIOS update .............................................................................................................. 74
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................. 75
Determining the BIOS version ........................................................................................................... 77
Downloading a BIOS update .............................................................................................................. 78
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................. 79

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