Lenovo 3140 Personal Computer User Manual


 
Removing the computer cover
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
safety information” on page v.
This section provides instructions on how to open the computer cover.
CAUTION:
Turn off the computer and wait three to ve minutes to let the computer cool before opening the
computer cover.
To open the computer cover, do the following:
1. Remove any media from the drives and turn off all attached devices and the computer.
2. Disconnect all power cords from electrical outlets.
3. Disconnect the power cords, Input/Output cables, and any other cables that are connected to the
computer. See “Locating connectors, controls, and indicators on the front of your computer” on page 7
and “Locating connectors on the rear of your computer” on page 8.
4. Remove any locking device that secures the computer cover, such as an integrated cable lock or
a padlock. See “Attaching an integrated cable lock” on page 27 or “Locking the computer cover”
on page 26.
5. Remove the two screws that secure the computer cover and slide the computer cover to the rear to
remove it.
Figure 9. Removing the computer cover
Removing and reinstalling the front bezel
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
safety information” on page v
.
This section provides instructions on how to remove and reinstall the front bezel.
To remove and reinstall the front bezel, 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.
32 ThinkCentre User Guide