HP Pavilion ZD8000 Maintenance And Service Manual page 131

2. Remove the two PM2.0×8.0 screws 1 that secure the middle
fan to the base enclosure.
3. Remove the four PM2.0×8.0 screws 2 that secure the right
fan to the base enclosure.
4. Remove the base enclosure middle 3 and right fans 4.
Removing the Base Enclosure Fans
Reverse the above procedure to install the base enclosure fans.
Maintenance and Service Guide
Removal and Replacement Procedures
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