Users Guide

510 Troubleshooting Guide
Vertical blanks
Action Yes No
1 Ensure the light path is not covered.
a Remove the drum cartridge, and keep it in the dark place.
b Clean the rear side of the drum cartridge with a dry cloth.
NOTE: Be careful not to touch or damage the drum.
c Re-install the drum cartridge.
d Press the (Information) button and tap Report/List .
e Ta p Demo Page .
The demo page is printed.
Does this solve your problem?
The task is complete. Go to action 2.
2 Replace the drum cartridge.
a Replace the drum cartridge. See "Replacing the Drum Cartridge."
b After you replace the drum cartridge, press the (Information)
button and tap
Report/List .
c Ta p Demo Page .
The demo page is printed.
Does this solve your problem?
The task is complete. Contact Dell.