HP nw9440 Maintenance And Service Manual page 143

Removal and Replacement Procedures
✎
The thermal pads should be thoroughly cleaned from the
surfaces of the video boards 1 and video board heat sink 2
each time the video board heat sink is removed. Thermal paste
is included with all video board heat sink and video board
spare part kits.
Thermal Paste Locations
Reverse the above procedure to install the video board heat sink
and fan assembly.
Maintenance and Service Guide 5–43