HP ZBook Studio G4 Maintenance And Service Manual page 51

4. Remove the fan/heat sink assembly (6).
CAUTION: When lifting the heat sink out of the computer, be careful not to bend the arm that connects
the fans.
Discrete graphics models:
UMA graphics models:
NOTE: The thermal material must be thoroughly cleaned from the surfaces of the fan/heat sink assembly
and the system board components each time the fan/heat sink assembly is removed. Replacement thermal
material is included with the thermal module, processor, and system board spare part kits.
Component replacement procedures 39