3. Disconnect the CPU heatsink fan connector 3 from the system board.
4. Before lifting the heatsink, carefully break the adhesive compound between the CPU heatsink and
processor by rotating the heatsink back and forth. Then, lift the CPU heatsink.
Figure 4-45 Removing the CPU heatsink from the system board
5. 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 (Predisassembly procedures on page 57). Remove the side
access panel (
Side access panel on page 63) and the CPU heatsink (Removing the CPU
heatsink on page 91).
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.
92 Chapter 4 Removal and replacement procedures ENWW
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