HP EliteBook 8540p Maintenance And Service Manual page 60

6. Release the display bezel bottom edge (3) from the display assembly.
7. Remove the Phillips PM2.0×4.0 screw (1) that secures the ambient light sensor to the display
enclosure.
8. Release the sensor (2) from the display enclosure as far as the display panel cable and
backlight cable allow.
9. Disconnect the backlight cable (3), the display panel cable (4), and the keyboard light cable (5)
from the ambient light sensor.
10. Remove the ambient light sensor.
Reverse this procedure to install the ambient light sensor.
Component replacement procedures 53