Replacing The System Fan Assembly - Lenovo THINKCENTRE 2491 Hardware Maintenance Manual

Figure 23. Installing the socket cover
Note: Your microprocessor socket and cover might look slightly different from the illustration.
5. Carefully press the other side of the socket cover downwards until the socket cover snaps into place.
Figure 24. 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 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.
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ThinkCentre Hardware Maintenance Manual