Replacing the heat sink
Attention
Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain a copy of the Safety and Warranty Guide, go to the Support Web site at http://www.lenovo.com/support.
This section provides instructions on how to replace the heat sink.
1.Remove the computer cover. See “Removing the cover” on page 11.
2.Lay the computer on its side.
3.Locate the heat sink. See “Identifying parts on the system board” on page 9.
4.Disconnect the heat sink and the fan assembly cable from the system board.
5.Pivot the handle 1 to release the heat sink clamp and then disengage the clamp from the plastic retention bracket.
Figure 20. Removing the heat sink
6.Lift the failing heat sink and fan assembly off the system board.
Chapter 3. Installing options and replacing hardware 25