Lenovo ThinkCentre M920z User Manual And Hardware Maintenance Manual page 54

3. Remove the side I/O bezel. See "Replacing the side I/O bezel" on page 24.
4. Remove the system board shield. See "Replacing the system board shield" on page 25.
5. Replace the integrated camera and microphone module.
Figure 82. Turning the integrated camera and microphone module around
Figure 83. Removing the integrated camera and microphone module cover
Figure 84. Removing the integrated camera and microphone module from the back frame
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M920z User Guide and Hardware Maintenance Manual