IBM 8649 - Eserver xSeries 225 Maintenance And Troubleshooting Manual page 100

12. Remove the front fan housing.
13. Remove mounting screws securing the system board to the chassis and lift the
14. Lift the system board out of the server chassis.
To replace the system board, reverse the steps.
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IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide
front of the system board to clear the locating pin; then, slide the board
forward to clear the EMC shield.