Replacing The Wifi Units - Lenovo 10AU User Manual

4. Pivot the drive bay assembly upward. See "Accessing the system board components and drives"
on page 37.
5. Disconnect the front audio and USB assembly cables from the system board. See "Locating parts on
the system board" on page 13.
Note: Make sure that 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 bracket to the chassis to remove
the bracket from the chassis.
Figure 49. Removing the front audio and USB assembly
7. Install the front audio and USB assembly bracket into the chassis and align the screw hole in the
bracket with the corresponding hole in the chassis.
8. Install the screw to secure the bracket to the chassis.
9. Pivot the drive bay assembly upward and reconnect the front USB and front audio cables to the system
board. See "Locating parts on the system board" on page 13.
10. Reconnect the front audio and USB assembly cables to the front audio connector and the front USB
connector on the system board. See "Locating parts on the system board" on page 13.
11. Lower the drive bay assembly. See "Accessing the system board components and drives" on page 37.
12. Reinstall the front bezel. See "Removing and reinstalling the front bezel" on page 36.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 76.

Replacing the WiFi units

Attention: Do not open your computer or attempt any repair before reading and understanding the
"Important safety information" on page v.
This section provides instructions on how to replace the WiFi units. The WiFi units include a WiFi adapter
card, a WiFi card module, and a rear WiFi antenna cable.
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ThinkCentre E73 User Guide