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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.
Figure74. 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 13.
8. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 41.
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 99.
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 v.
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 89
• “Removing the Wi-Fi card module” on page 91
• “Installing the Wi-Fi units” on page 92
88 ThinkCentre M83, M93/p User Guide