Lenovo ThinkCentre M92z Hardware Maintenance Manual - ThinkCentre M92z (type 3 - Page 108

Replacing the ambient light sensor, Place a soft

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Figure 33. Removing the WiFi card 8. Insert the notched end of the new WiFi card into the mini PCI Express x1 card slot. Press the new WiFi card firmly and then pivot the WiFi card to align the screw hole in the new WiFi card with the one in the system board. 9. Install the screw to secure the new WiFi card to the system board. 10. Connect the two cables to the new WiFi card. 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 127. Replacing the ambient light sensor Attention: Do not open your computer or attempt any repair before reading and understanding "Important Safety Information" on page 1. This section provides instructions on how to replace the ambient light sensor. Note: The ambient light sensor is available only in some models. To replace the ambient light sensor, 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 83. 4. Locate the ambient light sensor. See "Locating major FRUs and CRUs (for models with the 20-inch display)" on page 73 or "Locating major FRUs and CRUs (for models with the 23-inch display)" on page 76. 104 ThinkCentre Hardware Maintenance Manual

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Figure 33. Removing the WiFi card
8. Insert the notched end of the new WiFi card into the mini PCI Express x1 card slot. Press the new WiFi
card firmly and then pivot the WiFi card to align the screw hole in the new WiFi card with the one
in the system board.
9. Install the screw to secure the new WiFi card to the system board.
10. Connect the two cables to the new WiFi card.
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 127.
Replacing the ambient light sensor
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important Safety Information”
on page 1.
This section provides instructions on how to replace the ambient light sensor.
Note:
The ambient light sensor is available only in some models.
To replace the ambient light sensor, 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 83.
4. Locate the ambient light sensor. See “Locating major FRUs and CRUs (for models with the 20-inch
display)” on page 73 or “Locating major FRUs and CRUs (for models with the 23-inch display)” on
page 76.
104
ThinkCentre Hardware Maintenance Manual