HP Pro 3420 Maintenance & Service Manual page 47

6. If you need to remove the webcam cable, remove the system board cover (see
Cover on page 49, remove the cable eyelet screw (1), disconnect the cable from the webcam
module (2), and remove the cable from the routing path (3), and then disconnect the cable from
the system board (4).
Figure 7-7 Removing the webcam cable
To install a webcam module or cable, reverse the removal procedures.
System Board
Webcam Module 39