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To replace the rear fan assembly, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 13.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 14.
4. Remove the PCI card holder for easier access to the rear fan assembly. See “Removing and reinstalling
the PCI card holder” on page 15.
5. Your computer supports two rear fan assemblies. Locate the rear fan assembly you want to replace.
See “Locating components” on page 8.
6. Disconnect the rear fan assembly cable from the appropriate rear fan connector on the system board.
See “Locating parts and connectors on the system board” on page 9.
7. The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly
by breaking or cutting the rubber mounts and gently pulling the rear fan assembly out of the chassis.
Figure 31. Removing the rear fan assembly
8. Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the
chassis and push the rubber mounts through the holes.
Note: The new rear fan assembly you received will have four new rubber mounts attached.
Chapter 2. Installing or replacing hardware 35