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Replacing the rear fan assembly
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to replace the rear fan assembly.
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 16.
3. Locate the rear fan assembly. See “Locating components” on page 11.
4. Disconnect the rear fan assembly cable from the system fan connector on the
system board. See “Locating parts on the system board” on page 12.
5. The rear fan assembly is attached to the chassis by four rubber mounts.
Remove the rear fan assembly by cutting the rubber mounts and gently pulling
the rear fan assembly out of the chassis.
6. Install the new rear fan assembly by aligning the new rubber mounts that came
with the new rear fan assembly with the corresponding holes in the rear of the
chassis, and then push the rubber mounts through the holes.
Note: The new rear fan assembly will have four new rubber mounts attached.
Figure 33. Removing the rear fan assembly
Chapter 2. Installing or replacing hardware 43