Lenovo ThinkStation P520 Hardware Maintenance Manual page 136

a. Locate the cover presence switch. See "Computer components" on page 35.
b. Disconnect the cover presence switch cable from the system board.
c. Slide the cover presence switch as shown to remove it from the computer chassis.
Figure 58. Removing the cover presence switch
3. To install a new cover presence switch, do the following:
a. Align the two notches in the new cover presence switch with the two tabs on the computer chassis.
Then, push the new cover presence switch inward until it is seated securely between the tabs.
Figure 59. Installing the cover presence switch
b. Connect the cable of the new cover presence switch to the cover presence switch connector on the
system board. See "Parts on the system board" on page 42.
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 202.
128
P520 Hardware Maintenance Manual