IBM 86624RY Maintenance Manual - Page 265
Processor board removal, Disconnect all processor board cables.
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Page 265 highlights
Processor board removal Note Read "Safety information" on page 340. To remove the processor board, do the following. 1. Remove the processor support tray (see "Processor support tray removal" on page 259). 2. Remove memory board (see "Memory board removal" on page 232). 3. Remove Fan 4 (see "Hot-swap fan assembly replacement" on page 202). 4. Remove all VRMs from their slots. 5. Remove all microprocessors and terminators from microprocessor connectors 1 through 4 (see "Microprocessor installation" on page 238). 6. Disconnect all processor board cables. 7. Remove microprocessor brackets. a. Remove 4 screws 5 on each bracket 3 ; then, lift brackets out of the support tray 4 . 8. Remove the processor board screws 1 . 9. Remove the processor board 2 . Netfinity 5500 M20 - Type 8662 257