Lenovo 8098 manual Hardware Maintenance Manual

3.Remove the heat sink
2 from the system board by rotating the lever
1 securing the heat sink until it is fully in the up position. Carefully lift the heat sink off the system board.

Note: If you are replacing the system board, place the heat sink on its side on a clean, flat surface. You must later install the heat sink on the new system board.

104Hardware Maintenance Manual