Lenovo ThinkCentre M58e Hardware Maintenance Manual - Page 82

Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support This section provides information on how to remove and replace the microprocessor. The procedure varies depending upon the machine type. 1. Remove the computer cover. See "Removing the computer cover" on page 69. 2. Place the computer on its right side to help make the microprocessor more accessible. 3. Disconnect the heat sink and fan assembly cable from the system board. See the system board illustration for your machine type at "System board connectors" on page 68. 4. Remove the four screws 1 securing the heat sink and fan assembly to the system board. 5. Lift the heat sink and fan assembly off the failing system board. Place the heat sink on its side so that the thermal grease does not come in contact with anything. 6. To remove the microprocessor 2 from the system board, lift the small handle 3 and open the retainer 1 . 76 ThinkCentre Hardware Maintenance Manual