HP ProDesk 400 G1 Desktop Mini - Maintenance and Service Guide

Fan
The fan sits between the fan sink and the rear of the computer.
1. Prepare the computer for disassembly (
Preparation for disassembly on page 17).
2. Remove the access panel (
Access panel on page 18).
3. Remove the heat sink (
Heat sink on page 33).
4. Disconnect the fan cable from the system board connector labeled CHFAN (1).
5. Remove the four Torx screws that secure the fan to the computer (2).
6. Remove the fan from the computer.
To install the fan, reverse the removal procedure.
NOTE: To avoid damaging the rubber screw grommets installed around the captive screws, when installing
the fan, push down on the fan assembly before you tighten the screws. Make sure the grommets are
positioned correctly before tightening the screws.
36 Chapter 4 Removal and replacement procedures