Personal Computer Hardware Maintenance Manual

4. Note the front audio and USB assembly cables routing and remove the screw
that secures the assembly to the chassis.
5. Remove the failing front audio and USB assembly from the chassis.
6. Install the new front audio and USB assembly into the chassis and secure it
with the screw.
7. Connect the front audio and USB assembly cables to the system board.
8. To reinstall the front bezel, align the plastic tabs on the bottom of the bezel
with the corresponding holes in the chassis, then pivot the bezel inward until it
snaps into position.
9. Go to “Completing the FRU replacement” on page 106.
Replacing the heat sink
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 heat sink.
CAUTION:
The heat sink might be very hot. Turn off the computer and wait three to five
minutes to let the computer cool before opening the computer cover.
Figure 13. Removing the front audio and USB assembly
Chapter 8. Replacing FRUs 91