Operation Manual

16. Set the assembly on a firm and static-protective work surface; then, remove
the six screws that secure the power backplane to the backerplate and set the
screws in a safe place.
Note: Any serrated washers located at the screw holes remain in place.
17. If you are replacing the power backplane, remove the power backplane from
the backerplate; then, position the replacement power backplane on the
backerplate and attach it with the six screws that were removed in step 16.
Attention: Do not overtighten the screws.
18. If you are replacing the I/O board, remove the power backplane from the
backerplate and position it on the new backerplate containing the replacement
I/O board; then, attach it with the six screws that were removed in step 16.
Attention: Do not overtighten the screws.
19. Reinstall the I/O board and power backplane assembly by angling the front
end of the assembly into the chassis first; then, gently slide it toward the front
of the server while lowering the rear of the assembly into the chassis.
20. Align the two notches on each side of the assembly with the two metal loops
on each side of the chassis.
21. Grasping the center flange, slide the assembly toward the rear of the server
until it is in place.
22. Finger-tighten the two thumbscrews on the rear of the server.
Attention: Do not overtighten the screws.
23. Replace the power supply structure (see “Power-supply structure” on page 78).
24. Continue the reassembly procedure by following steps 1 on page 81 through
11 on page 82 in reverse order.
Notes:
a. Be sure to route the cables in between the fans, and then through the
channel with the plastic lip.
b. The SCSI backplane cable and the external SCSI cables have similar
connectors; be sure to reconnect them correctly.
c. The cable for the Remote Supervisor Adapter II must be routed over the
top of the PCI adapter insulator located closest to the center of the server.
Do not route the cable underneath this insulator.
d. Be sure to align the Remote Supervisor Adapter II cable correctly; the
Remote Supervisor Adapter II is keyed to accept the cable in one direction
only.
84 IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide