Lenovo 9704ALU Hardware Maintenance Manual - Page 108
Replacing the microprocessor, Remove the four screws
UPC - 883609915025
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Replacing the microprocessor This procedure describes how to remove and replace the microprocessor. The procedure varies depending upon the machine type. Important The heat sink and microprocessor might be very hot. Make sure these components are cool enough to safely handle before continuing this procedure. 1. Remove the side cover. See "Removing the cover" on page 93. 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 92. 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 . 100 ThinkCentre Hardware Maintenance Manual