Lenovo 4479, 4495, 4497, 4499, 4504, 4513, 4517, 4524, 7021, Personal Computer User Manual


 
To complete the installation or replacement, go to “Completing the parts replacement” on page 64.
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.
Note: The front fan assembly is only available in some models.
To replace the front fan assembly, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 32.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 33.
4. Disconnect the front fan assembly cable from the power fan connector on the system board. See
“Locating parts on the system board” on page 12.
5. Release the two tabs 1 that attach the front fan assembly to the chassis as shown and then completely
remove the front fan from the chassis.
Figure 41. Removing the front fan assembly
Chapter 5. Installing or replacing hardware 57