HP Compaq 6520s Maintenance And Service Manual page 135

Remove the backlight cables (1) from the clip (2) in the display panel.
15.
Turn the display panel upside down.
16.
WARNING!
The backlight contains mercury. Exercise caution when removing and handling the
backlight to avoid damaging this component and causing exposure to the mercury.
Remove the backlight frame from the display panel.
17.
Display 127