Lenovo 7099U1U, Hardware Maintenance Manual

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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. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 101.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 102.
4. Disconnect the front audio and USB assembly cables from the front USB connector and the front audio
connector on the system board. See “Locating parts on the system board” on page 99.
5. Pivot the drive bay assembly upward to gain access to all the internal cables. See “Accessing the
system board components and drives” on page 104.
6. Release the front audio and USB assembly cables from the cable clip that secures the cables to the
chassis.
7. Lower the drive bay assembly. See “Accessing the system board components and drives” on page 104.
8. Remove the screw that secures the front audio and USB assembly. Then, remove the front audio and
USB assembly from the chassis.
Figure 73. Removing the front audio and USB assembly
9. Position the new front audio and USB assembly to the chassis so that the screw hole in the new front
audio and USB assembly is aligned with the corresponding hole in the chassis.
10. Install the screw to secure the new front audio and USB assembly in place.
Chapter 9
.
Replacing FRUs (Machine Types: 0889, 5023, and 7844.)
129