Replacing the system fan
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, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the system fan.
To replace the system fan:
1. Open the computer cover. See “Opening the computer cover” on page 84.
2. Disconnect the system fan cable from the system fan connector on the system
board. See “Locating parts on the system board” on page 83.
3. Remove the heat sink to gain access to the system fan. See “Replacing the heat
sink” on page 91.
4. Locate the two rubber mounts that secure the system fan to the chassis.
Remove the rubber mounts by breaking them or cutting them with scissors.
Note:
When you receive the new system fan, you will also receive new rubber
mounts.
5. Lift the system fan out of the chassis.
Figure 20. Removing the system fan
Chapter 8. Replacing FRUs 99
