Figure 2-17. Separating The Heatsink And Fan - HP DesignJet 500 Service Manual

7. To separate the fan from the heatsink, remove both connecting screws.
Reassembly Note
Make sure the fan cable is retained by the hook on the underside of the heatsink.
2-22 Removal and Replacement

Figure 2-17. Separating the Heatsink and Fan

Screws, M2×3mm (2)
HP Omnibook 500