7. Connect the new card reader cable to one of the front USB connectors on the
system board. See “Locating parts on the system board” on page 12.
8. Reinstall the secondary hard disk drive if you have removed it. See “Replacing
the secondary hard disk drive” on page 35.
9. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on
page 17.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the replacement, go to “Completing the parts replacement” on
page 46.
Replacing the front fan assembly
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,goto:
http://www.lenovo.com/support
Depending on the model type, your computer might have a front fan assembly
installed. This section provides instructions on how to replace the front fan
assembly.
To replace the front fan assembly, 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. Remove the computer cover. See “Removing the computer cover” on page 16.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on
page 17.
4. Disconnect the front fan assembly cable from the power fan connector on the
system board. See “Locating parts on the system board” on page 12.
40 User Guide