6. Remove the rear fan assembly out of the chassis.
7. Install the new rear fan assembly by aligning the rubber mounts of the rear
fan assembly with the holes on the chassis and push the rubber mounts
through the holes.
8. Pull on the tips of the rubber mounts until the rear fan assembly is in place.
9. Connect the rear fan assembly cable to the system fan connector on the system
board.
10. Go to “Completing the parts replacement” on page 37.
Replacing the USB keyboard or mouse
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. Toobtain a copy of the ThinkCentre Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to replace the USB keyboard or mouse.
To replace the USB keyboard or mouse, 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.
2. Disconnect the cable of the old USB keyboard or mouse from the computer.
Figure 30. Replacing the rear fan assembly
36 User Guide