HP Compaq nw8440, nc8430, nx8420 Notebook PCs - Maintenance and Service Guide

5–24 Maintenance and Service Guide
Removal and Replacement Procedures
✎
The thermal paste should be thoroughly cleaned from the
surfaces of the video board 1 and video heat sink 2 each time
the fan assembly is removed. Thermal paste is included with all
fan assembly and system board spare part kits.
Replacing the Thermal Paste