Lenovo ThinkCentre M57 Hardware Maintenance Manual - Page 131
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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 117. 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 116. 4. Remove the four screws securing the heat sink and fan assembly to the system board. Chapter 9. Replacing FRUs - Tower Computers 125