Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 97
contaminated.
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8. Place the failing system board next to the new system board on a clean, flat surface. 9. Remove all memory modules from the failing system board and install them in the same connectors on the new system board. See "Identifying parts on the system board" on page 85. 10. Remove the heat sink from the failing system board by pivoting the lever 1 until it is fully in the vertical position. Carefully lift the heat sink off of the failing system board. Note: Place the heat sink on its side on a clean, flat surface so the thermal grease on the bottom of the heat sink does not touch the surface and become contaminated. 11. To remove the microprocessor from the failing system board, release the lever 1 securing the microprocessor 3 then pivot the microprocessor retainer 2 until it is fully open. Chapter 8. Replacing FRUs 91