System Board - HP dc7900 - Convertible Minitower PC Service & Reference Manual

System Board

1. Prepare the computer for disassembly
2. Remove the access panel
3. Remove all PCI and PCI Express expansion boards
4. Remove the fan shroud from the chassis
5. Remove the fan from the chassis
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. If applicable, disconnect the serial port from the system board.
10. Disconnect the balance of the cables from the system board.
11. Remove the heatsink
12. Remove the seven screws that secure the system board to the chassis.
Figure 8-66
13. Lift up the front of the system board, and then pull the system board forward, up, and out of the
chassis.
To install the system board, reverse the removal procedure.
NOTE: When replacing the system board, you must also change the chassis serial number in the
BIOS.
NOTE: The heatsink should be installed on the system board before the system board is reinstalled
in the chassis.
(Computer Access Panel on page
(Front Fan Assembly on page
(Heatsink on page
Removing the system board
(Preparation for Disassembly on page
125).
(Expansion Cards on page
(Fan Shroud on page
167).
118).
132).
161).
162).
System Board 171