Replacing The Front Audio And Usb Assembly - Lenovo ThinkCentre M90 3244 User Manual

8. Alternate tightening each screw a small and equal amount until the heat sink is

Replacing the front audio and USB assembly

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:
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User Guide
secured to the system board. Do not over-tighten the screws.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the installation or replacement, go to "Completing the parts
replacement" on page 37.
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
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 14.
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 16.
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 11.
Note: Make sure you note the locations of the cables when you disconnect the
cables from the system board.