24
Fastex fastener
Hole in right side of chassis
To remove the system board:
1. Remove the top cover and both side panels. See Chapter 1, “Accessing the System,” for
details.
2. Remove the power supply. See the “Power Supply” section above for details.
3. Lay the chassis down on its right side.
4. Note the locations where all cables are connected to the system board.
5. Disconnect all cables from the system board.
6. Note the locations of the expansion cards, remove them, and place the cards on an
antistatic surface.
7. Remove DIMMs, the bus termination card (if installed), and processor module(s) and
place them on an antistatic surface. See the respective procedures above for details on
removing these components.
8. Remove the chassis brace.
9. Remove the jackscrews on all external port connectors.
WARNING
Use care when removing or installing the screws to avoid damaging components on the
system board.
10. Remove the four screws and the four plastic rivets on the dual processor retention module
(DPRM), and remove the DPRM from the chassis.
11. Remove the 21 screws from the system board.
12. Lift the system board out of the chassis and place it on an antistatic surface.
To install a new system board:
1. Place the new system board into the chassis, align all mounting holes, and install the
jackscrews on the external port connectors.
2. Loosely install the remaining screws on the system board, except those for the DPRM.
Do not tighten the screws yet.
3. Mount the DPRM to the system board with the plastic rivets. The DPRM is keyed to the
processor slots to ensure correct orientation.
