Lenovo ThinkCentre Edge 3484, Hardware Maintenance Manual

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10. Lower and position the heat sink fan duct on the top of the heat sink and fan assembly until it snaps
into position.
Figure 74. Installing the heat sink fan duct
11. Secure the power supply assembly cables with the cable clips and ties in the chassis.
12. To complete the installation or replacement, go to “Completing the parts replacement” on page 154.
Replacing the heat sink and 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 heat sink and fan assembly.
CAUTION:
The heat sink and fan assembly might be very hot. Turn off the computer and wait three to five
minutes to let the computer cool before removing the computer cover.
To replace the heat sink and 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 116.
3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 117.
Chapter 10
.
Replacing FRUs (Machine Types: 3493, 3496, and 3497)
133