Lenovo ThinkCentre M71e, 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 68. Installing the heat sink fan duct
11. To complete the installation or replacement, go to “Completing the parts replacement” on page 141.
Replacing the microprocessor
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 microprocessor.
CAUTION:
The heat sink and microprocessor 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 microprocessor, 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. Locate the system board and disconnect all cables connected to the system board. See “Locating
parts on the system board” on page 78.
4. Remove the heat sink and fan assembly with the fan duct. See “Replacing the heat sink and fan
assembly” on page 127.
Chapter 9
.
Replacing FRUs (Machine Types: 3132, 3134, 3140, 3143, 3147, 3154, 3157, 3167,
3171, 3176, 5033, 5039, and 7339.)
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