NOTE: For UMA models, thoroughly clean thermal material from the surfaces of the system board (1)(3) and heat sink (2)(4) each time you remove the heat sink. All heat sink and processor spare part kits include thermal material.
In the following illustration, the location denoted by callout (2) on the heat sink uses thermal grease. The location denoted by callout (4) on the heat sink uses a PCH thermal pad.
Reverse this procedure to install the heat sink.
