HP 4000 Maintenance & Service Guide HP Compaq 4000 Pro Small Form Factor B - Page 92

System Board

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System Board Description System board - standard (includes thermal material) System board - Netclone (includes thermal material) Spare part number 608748-001 640126-001 1. Prepare the computer for disassembly (Preparation for Disassembly on page 40). 2. Remove the access panel (Computer Access Panel on page 41). 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 (seeInstalling Additional Memory on page 45) ● Expansion cards (Removing or Installing an Expansion Card on page 49) ● Heat sink (Heat sink on page 76) ● Processor (Processor on page 78) 4. Remove the baffle from the chassis (Baffle on page 71). 5. Remove the fan from the chassis (Front Fan Assembly on page 72). 6. Rotate the drive cage to its upright position. 7. Rotate the power supply to its full upright position. 8. Disconnect all data and power cables from the system board. 9. Disconnect the balance of the cables from the system board. 10. Remove the eight screws (1) that secure the system board to the chassis. 82 Chapter 6 Removal and Replacement Procedures Small Form Factor (SFF) Chassis

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System Board
Description
Spare part number
System board – standard (includes thermal material)
608748-001
System board – Netclone (includes thermal material)
640126-001
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
40
).
2.
Remove the access panel (
Computer Access Panel
on page
41
).
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 (see
Installing Additional Memory
on page
45
)
●
Expansion cards (
Removing or Installing an Expansion Card
on page
49
)
●
Heat sink (
Heat sink
on page
76
)
●
Processor (
Processor
on page
78
)
4.
Remove the baffle from the chassis (
Baffle
on page
71
).
5.
Remove the fan from the chassis (
Front Fan Assembly
on page
72
).
6.
Rotate the drive cage to its upright position.
7.
Rotate the power supply to its full upright position.
8.
Disconnect all data and power cables from the system board.
9.
Disconnect the balance of the cables from the system board.
10.
Remove the eight screws
(1)
that secure the system board to the chassis.
82
Chapter 6
Removal and Replacement Procedures Small Form Factor (SFF) Chassis