HP 285 Maintenance and Service Guide - Page 55

System board, Disconnect all cables connected to the system board

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System board 1. Prepare the computer for disassembly (Preparation for disassembly on page 17). 2. Remove the access panel (Access panel on page 18). 3. When replacing the system board, make sure the following components are removed from the defective system board and installed on the replacement system board: ● Memory modules (Memory on page 22) ● Expansion cards (Expansion cards on page 25) ● Fan sink (Fan sink on page 44). ● Processor (Processor for use in HP 280 G2 models (Intel) on page 45) 4. Disconnect all cables connected to the system board, noting their location for reinstallation. 5. Remove the six Torx screws that secure the system board to the chassis. 6. Lift the system board up and out of the computer. NOTE: System board appearance may vary. When reinstalling the system board, first insert the I/O panel back into the slots in the rear of the chassis, and then align the board with the chassis screw holes. NOTE: When replacing the system board, you must change the chassis serial number in the BIOS. System board 47

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System board
1.
Prepare the computer for disassembly (
Preparation for disassembly
on page
17
).
2.
Remove the access panel (
Access panel
on page
18
).
3.
When replacing the system board, make sure the following components are removed from the defective
system board and installed on the replacement system board:
●
Memory modules (
Memory
on page
22
)
●
Expansion cards (
Expansion cards
on page
25
)
●
Fan sink (
Fan sink
on page
44
).
●
Processor (
Processor for use in HP 280 G2 models (Intel)
on page
45
)
4.
Disconnect all cables connected to the system board, noting their location for reinstallation.
5.
Remove the six Torx screws that secure the system board to the chassis.
6.
Lift the system board up and out of the computer.
NOTE:
System board appearance may vary.
When reinstalling the system board,
first
insert the I/O panel back into the slots in the rear of the chassis, and
then align the board with the chassis screw holes.
NOTE:
When replacing the system board, you must change the chassis serial number in the BIOS.
System board
47