HP PROBOOK 4520S Maintenance And Service Manual page 104

7. If it is necessary to replace the display hinges, remove the display panel by removing the two Torx
M2.0×6.0 screws (1) that secure the panel to the top of the display enclosure, and then remove
the four Torx M2.0×6.0 screws (2) located at the hinge arms. This will allow the panel to be lifted
from the enclosure.
8. Remove the eight Phillips PM2.0×3.0 screws (1) that secure the display hinges to the display
panel, and then remove the display hinges (2). The left and right display hinges are available in
the Display Hinge Kit, spare part number 602677-001 for computers with 17.3-in displays.
9. If it is necessary to replace the display cable, turn the display panel upside-down and remove the
microphone (1) and the microphone cable (2) from the cable routing area. then disconnect the
cable from the connector on the back of the display panel (2).
94 Chapter 4 Removal and replacement procedures