HP nc4000 - Notebook PC Maintenance And Service Manual page 94

4. Disconnect the fan cable 1 from the system board.
5. Remove the three PM2.0×3.0 screws 2 that secure the fan to
the heat sink.
6. Remove the fan.
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CAUTION: When installing the fan in the heat sink, make sure the fan
cable is not get crimped by the screw next to the cable clip 3. If the
cable is crimped and damaged, the fan will not cool the notebook
internal components, which could result in damage.
Removing the Fan
Reverse the above procedure to install the fan.
Maintenance and Service Guide
Removal and Replacement Procedures
5–21