Replacing The System Fan Assembly - Lenovo 3133A2U Hardware Maintenance Manual

Replacing the system 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 system fan assembly.
To replace the system 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 113.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 114.
4. Pivot the drive bay assembly upward to gain access to the system fan assembly. See "Accessing the
system board components and drives" on page 115.
5. Remove the hard disk drive for easier access to the system fan assembly. See "Replacing the hard
disk drive" on page 121.
6. Remove the heat sink fan duct. See "Replacing the heat sink and fan assembly" on page 127.
7. Disconnect the system fan assembly cable from the system fan connector on the system board. See
"Locating parts on the system board" on page 78.
8. The system fan assembly is attached to the chassis by four rubber mounts. Remove the system fan
assembly by cutting the rubber mounts and lifting the system fan assembly out of the chassis.
Note: The new system fan assembly will have four new rubber mounts attached.
Figure 76. Removing the system fan assembly
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ThinkCentre Hardware Maintenance Manual