106 REMOVAL AND REPLACEMENT PROCEDURES
5 Before lifting the heatsink, carefully break the adhesive compound between the CPU heatsink and
processor by rotating the heatsink back and forth.
6 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.
Replacing the CPU Heatsink
1 Disconnect power from the system (page 68), remove the access panel (page 74), and remove the
CPU heatsink (page 105).
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,
3
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