Replacement; System Board Assembly - IBM F80 Service Manual

Rs/6000 enterprise server
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3. Pivot the divider out and toward the left until it is out.

Replacement

Replace in reverse order.

System Board Assembly

Removal
Note: Make a note of the locations of parts you remove during this procedure so that
1. Power off the system (see "Powering Off and Powering On the System" on page
2. Disconnect the ac power cord.
3. Remove the system covers (see "Removing the Covers" on page 311).
On the right side of the system:
4. Remove the power supplies (see "Power Supplies" on page 338).
5. Label and disconnect the cables from the right side of the system board assembly,
On the left side of the system:
6. Remove the processor unit assembly (see "Processor Card" on page 349).
7. Mark the locations and remove the memory riser cards and memory fillers, if
8. Mark the locations and disconnect the cables at the rear of the system.
9. Mark the locations and remove the adapter cards (see "Removing Adapter Cards"
10. Remove the PCI card dividers (see "PCI Adapter Dividers" on page 353).
11. Remove the fans and fan fillers (see "Fans and Fan Fillers" on page 338).
12. Mark the locations and remove the internal SCSI and SES cables.
13. Adjust the airflow control duct so that you can fit a screwdriver through the front of
14. Remove the screws that mount the top of the PCI card support to the system.
15. Remove the PCI card support assembly.
16. Mark the locations and disconnect the following cables from the backplane
17. Remove the CEC assembly (see "Memory and Processor Card CEC Assembly" on
354
Service Guide
you can reinstall them in the correct positions.
9).
including the SCSI cable connector from the left side.
present (see "Memory Riser Card and Processor Card" on page 342).
on page 329).
the system to remove the screws that mount the bottom of the PCI card support to
the CEC unit.
assembly:
v Fan cable
v Parallel cable assembly
v Debug cable assembly
page 344).

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