Lenovo ThinkCentre M90z, Hardware Maintenance Manual

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8. Install the two screws to secure the new WI-FI card to the system board.
9. Connect the two cables to the new WI-FI card.
10. Go to “Completing the parts replacement” on page 110.
Replacing the Bluetooth module
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 Bluetooth module.
Note: The Bluetooth module is available only in some models.
To replace the Bluetooth module, 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See “Removing the computer cover” on page 71.
4. Remove the rear I/O assembly cover. See “Removing or reinstalling the rear I/O assembly cover”
on page 74.
5. Locate the Bluetooth module in the computer. See “FRU locations” on page 69.
6. Note the Bluetooth module cable routing and disconnect the cable from the system board.
7. Carefully release the Bluetooth module and lift the Bluetooth module out of the computer.
Figure 27. Removing the Bluetooth module
8. Position the new Bluetooth module into the computer front bezel and then press the new Bluetooth
module downward until it is secured into place.
9. Connect the new Bluetooth module cable to the system board. See “System board connectors” on
page 70.
10. Reinstall the rear I/O assembly cover. See “Removing or reinstalling the rear I/O assembly cover”
on page 74.
Chapter 8
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Replacing FRUs
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