D20 Power Supply Bulkhead - IBM pSeries 7311 D10 Service Manual

D20 Power Supply Bulkhead

Before performing the following procedure, read the "Safety Considerations" on page 41.
Power Supply Bulkhead Removal
To remove the power supply bulkhead, do the following:
1. Open the rack front door.
2. Shut down the system as described in "Stopping and Starting the System" on page 42.
3. Put the Model D20 subsystem into the service position.
4. Disconnect the power source from the system.
Note: This system may be equipped with a second power supply. Before continuing with this
procedure, ensure that the power source to the system has been completely disconnected.
5. Open the service access cover as described in "Opening the Service Access Cover" on page 115.
6. Disconnect the RIO-2 cables from the RIO connectors located on the rear of the subsystem.
7. Disconnect the power cables from the power supplies
8. Label and then disconnect all PCI adapter cables from their respective adapters.
9. Remove the power supplies or power supply filler as described in "Power Supply Removal" on page
150.
10. Remove the RIO bus adapter as described in "RIO Bus Adapter Removal" on page 124.
11. Remove all PCI adapters as described in "Non-Hot-Pluggable PCI Adapter Removal" on page 130.
Note: Alternately remove the PCI dividers as you are removing the PCI adapters.
12. Remove the three upper-retaining screws that secure the top edge of the power supply bulkhead to
the subsystem chassis.
13. Remove the three lower-retaining screws that secure the bottom portion of the power supply bulkhead
to the subsystem chassis.
14. Remove the power supply bulkhead by lifting it straight up and out of the subsystem.
152 Eserver pSeries 7311 Model D10 and Model D20 Service Guide