Lenovo 3231 Personal Computer User Manual


 
Figure 65. Installing the new internal speaker
9. Reconnect the internal speaker cable and the thermal sensor cable to the system board.
10. Go to “Completing the FRU replacement” on page 131.
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:
1. Open the computer cover. See “Opening the computer cover” on page 107.
2. Pivot the drive bay assembly upward to gain access to the front audio and USB assembly. See
“Accessing the system board components and drives” on page 108.
3. Locate the front audio and USB assembly.
4. Remove the hard disk drive to gain access to the front audio connector on the system board. See
“Replacing the hard disk drive” on page 122.
5. Disconnect the front audio and USB assembly cables from the front audio connector and the front USB
connector on the system board. See “Locating parts on the system board” on page 110.
130 ThinkCentre Hardware Maintenance Manual