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.Open the computer cover. See “Opening the computer cover” on page 12.
3.Pivot the optical drive bay assembly upward to gain access to the front audio and USB assembly. See “Accessing the system board components and drives” on page 12.
4.Locate the front audio and USB assembly.
5.Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 9.
Note: Make sure you note the locations of the cables when you disconnect the cables from the system board.
6.Remove the screw that secures the front audio and USB assembly to the chassis.
8 
7 6
5
4 3
Figure 25. Removing the securing screw of the front audio and USB assembly
7.Remove the front audio and USB assembly from the chassis.
8.Install a new front audio and USB assembly into the chassis and align the screw hole in the front audio and USB assembly with the hole in the chassis.
9.Install the screw to secure the new front audio and USB assembly to the chassis.
26ThinkCentre User Guide