Dell C2665dnf Color Laser Printer - Manual (Page 544)

Fog
Action Yes No
1 Replace the drum cartridges.
a Replace the drum cartridges. See "Replacing the Drum Cartridges."
b After you replace the drum cartridges, click Chart Print on the
Diagnosis tab.
c Click 4 Colors Configuration Chart.
The task is complete. Contact Dell.
The 4 Colors Configuration Chart is printed.
Does this solve your problem?
Bead-Carry-Out (BCO)
Action Yes No
1 If the printer is installed in a high altitude location, set the altitude of
the location.
The task is complete. Go to action 2.
a Launch the Tool Box, and click Service Tools on the Printer
Maintenance tab.
b Under Adjust Altitude, select the value close to the altitude of the
location where the printer is installed.
Does this solve your problem?
2 Replace the drum cartridges. See "Replacing the Drum Cartridges." The task is complete. Contact Dell.
Does this solve your problem?
Troubleshooting Guide 542