Compaq Evo N180 Maintenance And Service Manual page 93

4. Remove the four PM2.0 × 5.5 screws 1 that secure the heat
sink to the base enclosure (Figure 5-15).
The screws should be removed and replaced in the 1, 2, 3, 4
sequence as stamped on the heat sink.
5. Lift the right side of the heat sink 2 and slide it to the right at
an angle until the left side of the heat sink is clear of the base
enclosure.
Figure 5-15. Removing the Heat Sink Screws
Maintenance and Service Guide
Removal and Replacement Procedures
5–21