Lenovo THINKCENTRE M79 User Manual page 108

2. Remove the computer cover. See "Removing the computer cover" on page 69.
3. Locate the cover presence switch. See "Locating components" on page 5.
4. Disconnect the cover presence switch cable from the cover presence switch connector on the system
board. See "Locating parts on the system board" on page 6.
5. Remove the screw that secures the cover presence switch and remove the cover presence switch
from the chassis.
Figure 42. Removing the cover presence switch
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ThinkCentre M79 User Guide