Lenovo ThinkCentre E93z Hardware Maintenance Manual page 92

To remove and reinstall the VESA mount bracket, 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 other flat 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 79.
4. Locate the VESA mount bracket. See "Locating major FRUs and CRUs" on page 70.
5. Remove the system board shield. See "Removing and reinstalling the system board shield" on page 85.
6. Remove the three screws
off the computer.
Figure 23. Removing the VESA mount bracket
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that secure the VESA mount bracket, and then lift the VESA mount bracket