Exchange the 7311-D11 and 5790 I/O backplane assembly

Removal and replacement procedures for exchanging the I/O backplane assembly.

1. Power off the expansion unit (see Powering off an expansion unit).
2. Remove the ac power cord from the expansion unit that you are working on.
3. Put the I/O subsystem into the service position. (See Place the 7311-D11 and 5790 expansion unit in the service position ).
4. Label and remove the PCI adapters. (See PCI adapter).
5. Remove the service access cover. (See Remove the 7311-D11 and 5790 expansion unit service access cover).
6. Remove the power supplies. (See Exchange the 7311-D11 and 5790 power supply).
7. Remove the RIO bus adapter. (See Exchange the 7311-D11 and 5790 RIO/HSL card).
8. Remove the screws that hold the line cord tray.
9. Remove the line cord tray.
10. Remove the two screws that hold the SPCN connector card
11. Remove the SPCN connector card from the I/O backplane.
12. Remove the screws that hold the upper PCI adapter-mounting guides, and remove the guides.
13. Remove the screws that hold the lower PCI adapter-mounting guides, and remove the guides.
14. Remove the screws from the bulkhead bracket.
15. Disconnect the fan cable from the bulkhead bracket.
16. Remove the bulkhead bracket.
17. Disconnect the fan cable from the I/O backplane.
18. Remove the screws that secure the I/O backplane to the subsystem chassis.
19. Lift up on the rear of the backplane and slide it towards the rear of the unit, enough to clear the pipe light. Then lift the backplane up and out of the subsystem chassis.
20. Install the new backplane by reversing the above procedure.
21. Perform Setting expansion unit configuration ID and MTMS value and then continue with the next step of this procedure.
22. Go to Verifying the repair. This ends the procedure.