Replacing The Front Fan Assembly - Lenovo 0809B3U User Manual

Replacing the front 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, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the front fan assembly.
To replace the front 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 14.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on
page 15.
4. Pivot the drive bay assembly upward to gain access to the front fan assembly.
See "Accessing the system board components and drives" on page 17.
5. Remove the hard disk drive for easier access to the front fan assembly. See
"Replacing the hard disk drive" on page 38.
6. Remove the heat sink fan duct. See Figure 23 on page 31.
7. Note the cable routing and disconnect the front fan assembly cable from the
system fan connector on the system board. See "Locating parts on the system
board" on page 11.
Chapter 2. Installing or replacing hardware
41