System Board; Removal Of System Board - IBM RS/6000 44P 270 Service Manual

System Board

This section covers removal and replacement of the system board.

Removal of System Board

Attention: Be certain to record the location of any component prior to removal or
1. If you have not already done so, shut down the system as described in "Stopping
the System Unit" on page 224.
2. If you have not already done so, unplug the system unit power cable from the
electrical outlet.
3. If you have not already done so, remove the front, rear, and left side covers as
described in "Removal of Covers" on page 226.
4. If you have not already done so, remove the processor and memory card cover as
described in "Removal of Covers" on page 226.
5. If you have not already done so, remove the disk drive cage as described in "Disk
Drive Cage" on page 266.
6. Remove the processor cards from the system unit. Refer to "Removal of Processor
Card" on page 239 for more information.
7. Remove the memory cards from the system unit. Refer to "Removal of Memory
Cards" on page 232 for more information.
8. Remove the retaining screws that secure the processor and memory card bracket
to the system unit.
Processor and
Memory Card
Bracket
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Service Guide
disconnection. Record the settings of any jumpers on the board prior to
removing it from the system unit.