Lenovo 3421 Personal Computer User Manual


 
Removing and reinstalling the front bezel
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to remove and reinstall the front bezel.
To remove and reinstall the front bezel, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 14.
3. Remove the front bezel by releasing the three plastic tabs on the left side and pivoting the front bezel
outward.
Figure7. Removing the front bezel
4. To reinstall the front bezel, align the three plastic tabs on the right side of the front bezel with the
corresponding holes in the chassis, then pivot the front bezel inwards until it snaps into position on
the left side.
5. To complete the installation, go to “Completing the parts replacement” on page 38.
Installing or replacing a PCI card
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:
http://www.lenovo.com/support
Chapter 2. Installing or replacing hardware 15