HP 15 TouchSmart Notebook PC Maintenance And Service Manual page 75

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Discrete graphics: Thermal paste is used on the processor and associated heat sink area (1)(2), as well
as the graphics chip and associated heat sink area (3)(4).
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UMA graphics: Thermal paste is used on the heat sink (1) and the processor (2).
Reverse this procedure to reassemble and install the heat sink assembly.
Component replacement procedures 67