Replacing The Wi-Fi Units - Lenovo ThinkCentre M73 10B0 Hardware Maintenance Manual

6. Position the new cover presence switch so that the screw hole in the cover presence switch is aligned
with the corresponding hole in the chassis. Then install the screw to secure the cover presence
switch to the chassis.
Figure 50. Installing the new cover presence switch
7. Reconnect the cover presence switch cable to the system board. See "Locating parts on the system
board" on page 73.
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 131.

Replacing the Wi-Fi units

Attention: Do not open your computer or attempt any repair before reading and understanding the
"Important safety information" on page 1.
This section provides instructions on how to replace the Wi-Fi units. The Wi-Fi units include a Wi-Fi adapter
card, a Wi-Fi card module, and a rear Wi-Fi antenna cable.
Replacing the Wi-Fi units involves the following operations:
• "Removing the Wi-Fi adapter card" on page 120
• "Removing the Wi-Fi card module" on page 122
• "Installing the Wi-Fi units" on page 124
Removing the Wi-Fi adapter card
To remove a Wi-Fi adapter card, 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.
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ThinkCentre M73 Hardware Maintenance Manual