HP PAVILION DM3 Maintenance And Service Manual page 76

2. Disconnect the fan cable from the system board.
3. Follow the sequence embossed on heat sink to loosen the four Phillips PM2.5×7.0 captive
screws (1–4) that secure the fan/heat sink assembly to the system board.
NOTE:
assembly and system board components, it might be necessary to move the fan/heat sink
assembly from side to side to detach the assembly.
68 Chapter 4 Removal and replacement procedures
Due to the adhesive quality of the thermal material located between the fan/heat sink