Lenovo 10B0 Maintenance Manual page 234

5. Pull the cover presence switch to remove it from the heat sink bracket.
Figure 197. Removing the cover presence switch
6. Attach the new cover presence switch to the thermal module.
Figure 198. Installing the cover presence switch
7. Connect the cable of the new cover presence switch to the cover presence switch connector on the
system board. See "Locating parts on the system board" on page 87.
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ThinkCentre M73 Hardware Maintenance Manual