Lenovo ThinkCentre E51 Hardware Maintenance Manual - Page 110
Lift the heat sink and fan assembly off the failing system board. Place the heat
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4. Remove the four screws securing the heat sink and fan assembly to the system board. Notice that there is a retention bracket on the back side of 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. 104 Hardware Maintenance Manual
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4.
Remove the four screws securing the heat sink and fan assembly to the system
board. Notice that there is a retention bracket on the back side of 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.
104
Hardware Maintenance Manual