Lenovo 9486F2U User Guide - Page 39

Replacing the system fan assembly

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8. Position the heat sink and fan assembly on the microprocessor socket and then 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. Figure 27. Clamping the heat sink and fan assembly to the plastic retention bracket 9. Reconnect the heat sink and the fan assembly cable to the microprocessor fan connector on the system board. 10. Go to "Completing the parts replacement" on page 35. 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 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 system fan assembly. To replace the system fan assembly: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Remove the computer cover. See "Removing the computer cover" on page 16. 3. Remove the front bezel and drive bay assembly. See "Accessing the system board components and drives" on page 17. 4. Disconnect the system fan assembly cable from the system board. See "Locating parts on the system board" on page 12. 5. Remove the hard disk drive. See "Replacing the hard disk drive" on page 23. 6. Remove the two screws that secure the system fan assembly. Chapter 2. Installing or replacing hardware 31

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8.
Position the heat sink and fan assembly on the microprocessor socket and
then position the clamp on the plastic retention bracket. Pivot the handle
±1²
to clamp the heat sink and fan assembly to the plastic retention bracket.
9.
Reconnect the heat sink and the fan assembly cable to the microprocessor fan
connector on the system board.
10.
Go to “Completing the parts replacement” on page 35.
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 Safety and Warranty Guide
that came with
your computer. To obtain a copy of the
ThinkCentre Safety and Warranty Guide
, go to:
This section provides instructions on how to replace the system fan assembly.
To replace the system fan assembly:
1.
Remove all media from the drives and turn off all attached devices and the
computer. Then, disconnect all power cords from electrical outlets and
disconnect all cables that are connected to the computer.
2.
Remove the computer cover. See “Removing the computer cover” on page 16.
3.
Remove the front bezel and drive bay assembly. See “Accessing the system
board components and drives” on page 17.
4.
Disconnect the system fan assembly cable from the system board. See
“Locating parts on the system board” on page 12.
5.
Remove the hard disk drive. See “Replacing the hard disk drive” on page 23.
6.
Remove the two screws that secure the system fan assembly.
Figure 27. Clamping the heat sink and fan assembly to the plastic retention bracket
Chapter 2. Installing or replacing hardware
31