IBM pSeries 690 Service Manual page 941

11. Remove the memory books (and blanks if applicable). See "Memory Books and Memory Blanks" on
page 926.
12. Remove the four fan assemblies. See "Processor Fan Assemblies" on page 928.
13. Remove the fan chassis. See "Fan Chassis" on page 928.
14. Remove the MCM modules. See "MCM Module (Processor) and Pass Through Modules" on page
879.
15. Remove the L3 modules. See "L3 Cache Modules" on page 898.
16. Remove the clock card. See "System Clock Card" on page 921.
17. Remove the media chassis. See "Media Subsystem Chassis" on page 1020.
18. Remove two frame extender mounting bolts from EIA position 17 (10-mm bolt).
19. Remove the UEPO switch. See "Unit Emergency Power Off (UEPO) Card Assembly" on page 866.
20. Using an 8-mm extension socket, remove the screws attaching the hold-down bracket to the vertical
EIA rails at the rear of the system. Remove the bracket and store it in a safe place.
Note: The rear screws are used to mount the hold-down bracket.
21. Using an 8-mm extension socket, remove the screws attaching the chassis to the vertical EIA rails at
the front of the system.
22. Position the lift tool at the front of the rack, and ensure that the extender arms on the lift plate are on
the side facing the frame. Align the lift tool such that processor subsystem chassis will not be blocked
(at the lip of the orange lift plate) from removal.
23. Raise the plate to a height such that the lift plate is just below the base of the processor subsystem
chassis. Release the pins on the lift plate, and fully extend the center portion of the plate toward the
processor subsystem chassis and lock it in place. Release pins on the extender arms and position
them on both left and right side, arms must fit around the frame extenders and lock in place (do not
adjust the lift tool once these arms are locked in place). Engage the lift tool brake. Install wheel
chocks on lift tool casters.
Note: When you attach the arms to the frame, ensure that any cables are clear of the extender
arms.
24. One person should gently push the processor subsystem chassis toward the tool from the rear of the
system (do not bend the vertical processor-subsystem chassis support bars). Two people should
gently pull and guide the processor subsystem chassis onto the lift plate. The processor subsystem
chassis must be removed far enough to clear the front face of the frame. Use the tie-down strap to
hold the processor subsystem chassis to the lift plate. Retract the extender arms and center portion
of lift plate.
25. Lower the processor subsystem chassis to the bottom position of the lift tool.
26. Remove the wheel chocks and release the brake. Flip the crank handle 180 degrees. Carefully move
the lift tool with the processor subsystem chassis to the staging area. The brake and wheel chocks
must be in place when transferring the processor subsystem chassis to or from the packaging
material.
Replacement
Note: If you are replacing this assembly with a new assembly, the manufacturing label with the machine
type, model number, and the serial number for the subsystem must be ordered to apply to the new
part. For information on replacement labels, see Chapter 10, "Parts Information," on page 1027.
Attention: Look for small amounts of debris on the connecting surfaces between the backplane and
processor modules. Mating the two surfaces is critical for the processor to function properly.
1. Position the lift tool such that the new processor subsystem chassis can be moved onto the lift plate.
2. Install the wheel chocks and engage the brake.
Chapter 9. Removal and Replacement Procedures
925