Lenovo 30113RU - IdeaCentre A600 - 3011 Hardware Maintenance Manual page 60

Hardware Maintenance Manual
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6. Place the heat sink upside down on a flat surface to prevent thermal
grease from contaminating other components.
NOTE
Wipe off the thermal grease from both the heat sink and CPU using
an alcohol pad.
7. Apply approximately 0.1 ml of the thermal grease compound to the
top of the CPU.
8. Set the new heat sink on the CPU, aligning the five screws in the heat
sink with the screw sockets in the chassis.