Replacing The Microprocessor - Lenovo ThinkCentre M72e Hardware Maintenance Manual

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 81. Installing the heat sink fan duct
11. To complete the installation or replacement, go to "Completing the parts replacement" on page 156.

Replacing the microprocessor

Attention:
Do not open your computer or attempt any repair before reading and understanding the "Important safety information"
on page 1.
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 120.
3. Locate the system board and disconnect all cables connected to the system board. See "Locating
parts on the system board" on page 73.
4. Remove the heat sink and fan assembly with the fan duct. See "Replacing the heat sink and fan
assembly" on page 132.
Note: Do not let the thermal grease on the bottom of the heat sink and fan assembly get in contact
with anything.
.
Chapter 10 Replacing FRUs (machine types: 0900, 0967, 1271, 3578, 3594, 3596, 3598, 3629,
3654, 3660, 3664, 3668, and 3676)
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