IBM 884015U, Maintenance And Troubleshooting Manual

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To install a shuttle with a preinstalled system board, slide the shuttle into the
server and close the shuttle locking latch. Reverse the previous steps to
replace the components that were removed. To remove the system board from
the shuttle, continue with the next step.
12. Remove the eight screws that secure the system board to the shuttle at the
microprocessor retention modules.
Heat sink retention
module screws (8)
13. Remove the four standoff screws that secure the system board to the shuttle
at the external connectors.
14. Remove the other ten screws that secure the system board to the shuttle.
15. Pull the system board carefully out of the shuttle.
Chapter 4. Field replaceable units
59