Replacing The Heat Sink And Fan Assembly - Lenovo 3133A2U Hardware Maintenance Manual

Figure 61. Connecting a SATA optical drive
12. To complete the installation or replacement, go to "Completing the parts replacement" on page 141.

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. 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 113.
3. Pivot the drive bay assembly upward. Then, pivot the two plastic retaining clips outward to remove
the heat sink fan duct from the failing heat sink and fan assembly.
Figure 62. Removing the heat sink fan duct
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Chapter 9 Replacing FRUs (Machine Types: 3132, 3134, 3140, 3143, 3147, 3154, 3157, 3167,
3171, 3176, 5033, 5039, and 7339.)
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