Service manual

Power Cabinet Component Removal and Replacement 5-13
2. If the system is not partitioned, shut down the operating system and issue the SRM
power off command. Put the OCP switch in the Off position. Skip to step 4.
3. If the system is partitioned, from the console connected to the partition to which the
PCI box containing the target FRU is attached, shut down the operating system and
power it off using the SRM power off command. Put the OCP switch in the
Secure position. Pull the plugs on the target PCI power supplies.
4. Remove the PCI power supplies. See Section 5.1.10.
5. Follow the procedure described in Section 5.1 to remove the PCI box from the
cabinet.
6. Remove both PCI box covers. See Section 5.1.
7. Remove the standard I/O module if present. See Section 5.1.1.
8. Remove both remote I/O riser modules. See Section 5.1.3.
9. Remove all PCI options. See Section 5.1.4.
10. Remove the CSB node ID module and cable. See Section 5.1.2.
11. Remove the two Phillips head screws that hold the back PCI card guide in place,
rotate the bracket so that one end moves forward and the other moves backward and
lift the card guide out.
12. Unplug the power cable from the backplane to the SCSI disk and DVD/CD-ROM.
13. Remove both fans. See Section 5.1.6.
14. Disconnect the interlock switch connector.
15. Unscrew the 16 screws that hold the PCI backplane to the bottom of the box.
16. Carefully remove the backplane.
Replacement
Reverse the steps outlined in the removal procedure. If necessary, update the PBM
firmware. See Appendix D.
Verification
Power up the system and check that the devices on this PCI subsystem are configured
into the system.