Dell 1710/n Mono Laser Printer - Manual (Page 53)

What this light sequence means:
The printer door is open.
What you can do:
Close the door.
What this light sequence means:
The printer is out of media, or the media did not feed properly.
What you can do:
Load media into tray 1 or the optional 550-sheet tray, and press
Continue to resume printing.
Check that the media is loaded correctly in tray 1 or the optional 550-
sheet tray.
Press Cancel to cancel the print job.