Lenovo ThinkCentre M720t, User Manual And Hardware Maintenance Manual, Page: 27 / 86

Removing the computer cover
Note: Before you open the computer cover, ensure that the E-lock has been unlocked in the Setup Utility
program. See “Computer locks”.
Attention: Do not open your computer or attempt any repairs before reading the Important Product
Information Guide .
CAUTION:
Before you open the computer cover, turn off the computer and wait several minutes until
the computer is cooled down.
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
3. Unlock any locking device that secures the computer cover.
4. Remove the dust shield if necessary. See “Replacing the dust shield” on page 22.
5. Remove the computer cover.
Figure 23. Removing the computer cover
6. Complete the replacement. See “Completing the parts replacement” on page 74.
Replacing the front bezel
Attention: Do not open your computer or attempt any repairs before reading the Important Product
Information Guide .
1. Remove the computer cover. See “Removing the computer cover” on page 23.
2. Replace the front bezel.
Chapter 4
.
Replacing hardware
23