Service manual

Removal and Replacement 7-37
Removal
1. Shut down the operating system and power down the system.
2. Expose the system drawer.
3. Expose the PCI bus card cage on the right when viewing the drawer from the
rear. Remove three Phillips head screws holding the cover in place, and slide it
off the drawer.
4. Remove all PCI options.
5. Disconnect all cables connected to the PCI motherboard.
6. Unscrew the two screws holding the system bus to PCI bus bridge module in the
system bus card cage to the PCI motherboard.
7. Remove the nine Phillips head screws that hold the motherboard in place. To
reach the screws on the bottom of the board, thread your screwdriver through the
three holes in the sheet metal.
8. Carefully pry the motherboard loose from the system bus to PCI bus bridge
module on the other side of the sheet metal separating the system bus card cage
from the PCI card cage.
9. Remove the motherboard from the card cage.
Replacement
Reverse the steps in the Removal procedure.
Verification
1. Power up the system (press the Halt button if necessary to bring up the SRM
console) and issue the show device command at the console prompt to verify
that the system sees all options.