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 54.
2. Note the location of pin 1 on the VPD module.
3. Remove the VPD module that came installed on the new I/O backplane.
4. Install the original VPD module from the old I/O backplane on 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. Reconnect the following cables to their respective connectors located on the front
of the I/O backplane.
v Operator panel cable
v DASD SPCN cable
v DASD Power
v Cooling Blower
8. Go to the back of the subsystem chassis and replace the two back retaining
screws.
Note: The two threaded screw holes used to secure the back of the I/O backplane
to the back of the subsystem chassis are located just below the left SPCN
connector and the rack indicator connector.
9. Reconnect the SPCN connectors from the back of the subsystem chassis.
10. Correctly align the plastic membrane over the top of the I/O backplane.
11. Replace the power supplies or the power supply filler as described in “Power
Supply Replacement” on page 171.
12. Replace the RIO bus adapter as described in “RIO Bus Adapter Replacement” on
page 141.
13. Reconnect the RIO-G cables from the RIO connectors located on the rear of the
subsystem.
Chapter 8. Removal and Replacement Procedures 177
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