Service manual

Removal and Replacement 7-55
Removal
1. Shut down the operating system and power down the system.
2. Expose the system drawer.
3. While you need not remove the tray containing the OCP, you do need to slide it
forward to access the OCP retaining screws under the tray. The tray is attached
to the power system section cover. To slide the tray forward:
a. Remove the tray cover by loosening the retaining screws at the back of the
tray and sliding it toward the back of the system.
b. Disconnect the cables from the OCP, and any optional SCSI device in the
tray from the bulkhead at the rear right of the tray.
c. Unscrew the Phillips head retaining screw holding the bulkhead to the tray.
d. Unscrew the two Phillips head retaining screws at the front of the system
drawer and slide the tray forward.
4. Remove the white power interconnect wire and the signal ribbon cable from the
OCP.
5. Remove the two Phillips head screws holding the OCP in place and remove it
from the tray.
Replacement
Reverse the steps in the Removal procedure.
Verification
Power up the system. If the OCP you installed is faulty, the system will not power
up.