Lenovo ThinkCentre M92 Hardware Maintenance Manual (HMM) (May 2012) - ThinkCen - Page 248

What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 262. 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. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See "Removing the computer cover" on page 217. 3. Remove the heat sink. See "Replacing the heat sink" on page 239. Note: Place the heat sink on its side so that the thermal grease on the bottom of it does not get in contact with anything. 4. Lift the small handle 1 and open the retainer 2 to access the microprocessor 3 . Figure 201. Accessing the microprocessor 242 ThinkCentre Hardware Maintenance Manual