HP 470 17 inch G9 Notebook PC Maintenance And Service Manual page 49

3. If you need to remove the fan insert, remove the three Phillips M2.0 × 4.0 screws (1) that secure the insert
to the computer, and then remove the insert from the computer (2).
Remove the fan assembly from discrete models:
1. Remove the six Phillips M2.0 × 4.0 screws (1) that secure the fan assembly to the computer.
Fan 43