Removal and replacement procedures 49
14. Power up the server (on page 25).
System board
To remove the component:
1. Power down the server (on page 24).
2. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
3. Unlock the front bezel (on page 25).
4. Place the server on its side.
5. Remove the access panel ("Access panel" on page 26).
6. If installed, remove the PCI air baffle ("PCI air baffle" on page 27).
7. Remove the system air baffle ("System air baffle" on page 28).
8. If installed, disconnect the FBWC capacitor pack cable from the cache module ("FBWC capacitor
pack" on page 38).
9. Remove the expansion boards ("Full-length expansion board" on page 40).
10. Remove all DIMMs.
11. Remove the fan modules and the fan blank ("Fan modules and fan blank" on page 30).
12. Disconnect all cables connected to the system board.
13. Remove the heatsink:
a. Loosen one pair of diagonally opposite screws halfway, and then loosen the other pair of screws.
b. Completely loosen all screws in the same sequence.
c. Remove the heatsink from the processor backplate.
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