Service Manual

Removing and Replacing Parts 4-31
System Board
Figure 4-27. System Board Removal
To remove the system board from the system board tray, perform the following
steps. (If you are replacing the system board, you may want to remove the
expansion cards, memory, processors, and processor guides and install them
on the replacement system board.)
1. Remove the system board assembly (optional).
2. Note the slot numbers of any PCI cards you are migrating to the
new system board so that you can install them in the same slots
on the new board.
3. Remove the system board components you are migrating to the
new system board.
4. Loosen the thumbscrew securing the system board to the tray (see
Figure 4-27).
5. Slide the system board to the left as shown in Figure 4-27 (toward
the inner expansion-card guide brackets) about a half inch to
clear the chassis hooks, and remove the board.
If you are replacing the system board, install any components you removed
from the old system board onto the replacement board. To retain the same
system configuration and appropriate resource sharing, install PCI expansion
cards in the same slots they were in on the old system board. Verify that the
jumper settings on the new system board are correct.
thumbscrew
inner card guide
brackets