System Board
1. Prepare the computer for disassembly (Preparation for Disassembly on page 118).
2. Remove the access panel (
Computer Access Panel on page 125).
3. Remove all PCI and PCI Express expansion boards (
Expansion Cards on page 132).
4. Remove the fan shroud from the chassis (
Fan Shroud on page 161).
5. Remove the fan from the chassis (
Front Fan Assembly on page 162).
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 (
Heatsink on page 167).
12. Remove the seven screws that secure the system board to the chassis.
Figure 8-66 Removing the system board
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.
System Board 171
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