HP Compaq nc4000 Series Maintenance And Service Manual page 97

4. Disconnect the fan cable 1 from the system board.
5. Loosen the two spring-loaded T8 M2.0×10.0 screws 2 that
secure the heat sink to the base enclosure.
6. Fold back the insulator material 3 to expose the heat sink
screws.
7. Remove the four T8 M2.0×4.0 screws 4 that secure the
heat sink to the base enclosure.
Removing the Heat Sink Screws
Maintenance and Service Guide
Removal and Replacement Procedures
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