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


 
7. Pull on the tips of the rubber mounts until the rear fan assembly is secured in place.
Figure 44. Installing the rear fan assembly
8. Connect the rear fan assembly cable to the system fan connector on the system board.
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the installation or replacement, go to “Completing the parts replacement” on page 64.
Replacing the front audio and USB 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 audio and USB assembly.
To replace the front audio and USB 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. Locate the front audio and USB assembly. See “Locating components” on page 11.
60 ThinkCentre User Guide