D20 I/O Backplane Assembly - IBM pSeries 7311 D10 Service Manual

D20 I/O Backplane Assembly

Before performing the following procedure, read the "Safety Considerations" on page 41.
I/O Backplane Removal
To remove the I/O backplane from the subsystem, 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 I/O subsystem power supplies.
8. Disconnect the SPCN connectors from the back of the subsystem chassis.
9. Label, and then disconnect all PCI adapter cables from their respective adapters.
10. Before handling any card, board, or memory DIMM, be sure to use your electrostatic discharge strap
to minimize static-electric discharge. Refer to "Handling Static-Sensitive Devices" on page 42.
11. Remove the RIO bus adapter as described in "RIO Bus Adapter Removal" on page 124.
12. Remove all of the power supplies or power supply filler as described in "Power Supply Removal" on
page 150.
13. Remove all PCI adapters as described in "Non-Hot-Pluggable PCI Adapter Removal" on page 130.
Note: When you are removing the PCI adapters, alternately remove the seven PCI dividers.
14. Disconnect the following cables in the order listed from the connectors located on the front of the I/O
backplane. See the following illustration for connector locations.
v Operator panel cable
v Disk drive SPCN cable
v Disk drive power cable
v Cooling blower cable
1 Operator Panel Connector
2 Disk Drive System Power Control Network
(SPCN) Connector
3 Disk Drive Power Connector
4 Cooling Blower Connector
Chapter 3. Removal and Replacement Procedures
155