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

Removal and Replacement Procedures
Maintenance and Service Guide 5–27
5.11 Heat Sink
1. Prepare the computer for disassembly (Section 5.3).
2. Release the keyboard (Section 5.9).
3. Remove the fan assembly (Section 5.10).
Heat Sink Spare Part Number Information
Heat sink (includes thermal paste) 416408-001