Lenovo 10HJ User Manual page 66

This section provides instructions on how to replace the microprocessor.
CAUTION:
The heat sink and microprocessor might be very hot. Before you open the computer cover, turn off
the computer and wait several minutes until the computer is cool.
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 40.
3. Lay the computer on its side for easier access to the system board.
4. Locate the system board and disconnect all cables connected to the system board. See "Locating
parts on the system board" on page 12.
5. Remove the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 50.
Note: Place the heat sink and fan assembly on its side so that the thermal grease on the bottom of it
does not get in contact with anything.
6. Lift the small handle
Figure 25. Accessing the microprocessor
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ThinkCentre M73 User Guide
1 and open the retainer 2 to access the microprocessor 3 .