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

Removal and Replacement Procedures
Maintenance and Service Guide 5–53
2. Remove the two Phillips PM2.5×4.0 screws 1 that secure the
modem board to the system board.
3. Lift the right side of the modem module 2 to disconnect it
from the system board.
4. Disconnect the modem cable 3 from the modem module.
5. Remove the modem module.
Removing the Modem Module
Reverse the above procedure to install the modem module.