Dell 3010cn - Color Laser Printer Manual page 91

Ready to Print
091-402
Drum Cartridge
Replace Soon
Ready to Print
193-700
non-DELL Toner
Installed
Drum life warning.
The drum cartridge needs to be replaced.
The printer is in the non-Doll toner mode.
Replace the drum cartridge.
See "Replacing the Drum Cartridges"
When some of the toner cartridges reach the end of their
lives, you cannot continue printing if the non-Dell toner mode
is not selected.