Lenovo 3139 Personal Computer User Manual


 
Figure13. Installing a memory module
7. Reinstall the PCI Express x16 graphics card if you have removed it.
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 38.
Installing or replacing the optical drive
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 install or replace the optical drive.
To install or replace an optical drive, 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. See “Removing and reinstalling the front bezel” on page 15.
4. Depending on whether you are installing or replacing an optical drive, do one of the following:
If you are installing a secondary optical drive, remove the plastic panel in the front bezel for the
drive bay you want to use. If there is a metal static shield installed in the drive bay, remove the
metal static shield.
If you are replacing an optical drive, disconnect the signal cable and the power cable from the rear
of the optical drive, press the blue release button, and then slide the optical drive out of the front
of the computer.
20 ThinkCentre User Guide