HP Pavilion dv9000 Maintenance And Service Manual page 196

Removal and Replacement Procedures
✎
The thermal pads and thermal paste should be thoroughly
cleaned from the surfaces of the heat sink 1, 2, and 3 and the
system board components 4, 5, and 6, each time the heat sink
is removed. Thermal pads and thermal paste should be installed
on all surfaces before the heat sink is reinstalled. Thermal pads
and thermal paste are included with all heat sink and system
board spare part kits.
Thermal Pad and Thermal Paste Locations
Reverse the above procedure to install the fan/heat sink assembly.
Maintenance and Service Guide 5–83