Dell S520 Projector - Manual (Page 113)

Troubleshooting Your Projector 113
Laser Curtain LED Guiding Signals
Status Description
LED
(White)
LED
(Red)
InterLock switch fail
Laser curtain isn't installed properly, yet
Interlock Swtich isn't located correctly.
Please check the installation position of
laser curtain. If the warning signal keeps
operating, please contact Service Center.
Flash (0.5s) OFF
Normal status Laser Curtain is functioning correctly. ON OFF
Laser Diode doesn't
work Laser Module is not operation, please
contact Service Center.
OFF ON