98 REMOVAL AND REPLACEMENT PROCEDURES
Replacing the CPU Heatsink
1 Disconnect power from the system (page 66), remove the access panel (page 71), and remove the
CPU heatsink (page 96).
2 Use alcohol and a soft cloth to clean all of the thermal interface material residue from the CPU
heatsink and processor.
CAUTION Allow the alcohol on the processor and CPU heatsink to dry completely.
3 Apply the thermal grease to center of the processor.
4 Place the CPU heatsink on top of the processor and align the four mounting screws with the holes 1
in the system board.
NOTE If both CPU heatsinks were removed, be sure all system board standoffs engage with the
keyholes in the chassis, be sure the system board connectors engage correctly with the rear I/O panel,
and push back on the system board while engaging the CPU heatsink screws with the chassis standoffs.
You only need to push back when trying to engage the first screw.
1
Step 6
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