Replacing The Rear Fan Assembly - Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual

5. Carefully press the other side of the socket cover downwards until the socket cover snaps into place.
Figure 30. Securing the socket cover
6. Carefully check the four corners of the socket cover to make sure that the cover is secured in the
microprocessor socket.
7. Lower the microprocessor retainer and then lower the lever to secure the retainer. Make sure the
lever is locked into position.
8. Follow any additional instructions included with the replacement part you received.

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 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 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.
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Chapter 8 Replacing FRUs (Machine Types: 1852, 1853, and 1855)
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