IBM pSeries 7311 D10 Service Manual page 175

I/O Backplane Replacement
To replace the I/O backplane, do the following:
1. 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.
2. Note the location of pin 1 on the VPD module.
3. Remove the VPD module that was installed on the new I/O backplane.
4. Install the VPD module from the old I/O backplane onto the new I/O backplane.
Note: When installing the VPD module, ensure that pin 1 is in the correct orientation.
5. Carefully align the I/O backplane to the alignment pins located on the chassis base.
6. Replace the three front retaining screws that secure the I/O backplane to the chassis.
7. Correctly align and then place the plastic membrane that protects the I/O backplane over the I/O
backplane. Secure it in place with five retaining screws.
8. Reconnect the following cables, in the order listed, to their respective connectors located on the front
of the I/O backplane:
v Cooling blower cable
v Disk drive power cable
v Disk drive SPCN cable
v Operator panel cable
9. Go to the rear of the subsystem chassis, and replace the two rear retaining screws.
Note: The two threaded screw holes used to secure the rear of the I/O backplane to the rear of the
subsystem chassis are located just below the left SPCN connector and the rack-indicator
connector.
10. Replace the power-supply bulkhead by doing the following:
a. Rotate the power-supply bulkhead, placing the top right corner under the chassis support bracket.
b. Align the slotted tab, located on the lower edge of the power supply bulkhead, with the alignment
pin, located on the subsystem chassis.
c. Align the four clearance holes located on the power-supply bulkhead with the four screw holes
located on the upper and lower subsystem chassis.
Note: When aligning the power-supply bulkhead, wiggle it until properly seated.
d. Secure the power-supply bulkhead to the subsystem chassis with four retaining screws.
11. Replace the PCI adapter-headstock bracket.
12. Align the four clearance holes on the bracket with the four screw holes located on the chassis.
13. Secure the PCI adapter-headstock bracket to the chassis with four retaining screws.
14. Replace the SCSI cable bracket, aligning the two screw holes and securing it with two retaining
screws to the chassis retaining bracket.
15. Reconnect the SPCN connectors from the back of the subsystem chassis.
16. Replace the power supplies or the power supply filler as described in "Power Supply Replacement"
on page 151.
17. Replace the RIO bus adapter as described in "RIO Bus Adapter Replacement" on page 126.
18. Reconnect the RIO-2 cables from the RIO connectors located on the rear of the subsystem.
Chapter 3. Removal and Replacement Procedures
159