Replacing The System Fan Assembly - Lenovo ThinkCentre A62 3656 User Manual

5. Lift the failing heat sink and fan assembly off the system board.
6. Remove the mylar film that covers the greased side of the new heat sink and
7. Position the heat sink and fan assembly on the microprocessor socket and then
Figure 32. Clamping the heat sink and fan assembly to the plastic retention bracket
8. Reconnect the heat sink and the fan assembly cable to the microprocessor fan
9. Go to "Completing the parts replacement" on page 37.

Replacing the system fan assembly

This section provides instructions on how to replace the system fan assembly.
To replace the system fan assembly:
Note: You might have to gently twist the heat sink and fan assembly to free it
from the microprocessor.
fan assembly that will face the microprocessor.
position the clamp on the plastic retention bracket. Pivot the handle 1 to
clamp the heat sink and fan assembly to the plastic retention bracket.
connector on the system board.
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
1. Remove the computer cover. See "Removing the computer cover" on page 14.
2. Remove the front bezel and drive bay assembly. See "Accessing the system
board components and drives" on page 15.
3. Disconnect the system fan assembly cable from the system board. See
"Locating parts on the system board" on page 11.
4. Remove the hard disk drive. See "Replacing the hard disk drive" on page 26.
Chapter 2. Installing options and replacing hardware
33