Dell 2330d/dn Mono Laser Printer - Manual (Page 82)

Is the printer cover closed properly?
Try turning your printer off and back on again. If your printer is still not operating properly, call for service. If you are able to
print, press the Menu button to print a menu settings page, which lists the printer model type and other information the
service representative may need to know.
For more information, contact Dell at support.dell.com .