HP ProOne 400 G1 Maintenance & Service Manual page 81

7. Remove the fan from the computer (3).
To install the fan assembly, reverse the removal procedures.
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.
Fan
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