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6. Insert the two tabs 2 of the new front fan assembly into the corresponding holes in the chassis, and
press the other two tabs 1 through the holes until the front fan assembly is secured in place.
Figure 42. Installing the front fan assembly
7. Connect the front fan assembly cable to the power fan connector on the system board.
8. To complete the installation or replacement, go to “Completing the parts replacement” on page 113.
Replacing the rear fan assembly
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre User Guide. To obtain a copy of the ThinkCentre User Guide, go to:
http://www.lenovo.com/ThinkCentreUserGuides
This section provides instructions on how to replace the rear fan assembly.
To replace the rear fan assembly, 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 79.
3. Locate the rear fan assembly. See “Locating components” on page 76.
4. Disconnect the rear fan assembly cable from the system fan connector on the system board. See
“Locating parts on the system board” on page 77.
108 ThinkCentre Hardware Maintenance Manual