226 Troubleshooting
Unable Clear Error
The printer cannot clear an error message because the error status 
still remains. Try solving the problem again.
uuuu Toner Low
This message indicates that the toner cartridge for the indicated 
color is near the end of its service life. Prepare a new toner 
cartridge.
Warming Up
The printer is warming up the machine to be ready to print.
Worn Fuser
This message indicates that the fuser unit has reached the end of 
its service life. Prepare a new fuser unit.
Worn Photoconductor
This message indicates that the photoconductor unit has reached 
the end of its service life. Printing after this message appears is 
not guaranteed. Turn the printer off, then replace the 
photoconductor unit with a new one. See “Photoconductor Unit” 
on page 165 for instructions. The error clears automatically after 
you replace the unit and close the printer covers.
Worn uuuu Dev Unit
The developer unit for the indicated color has reached the end of 
its service life. You can print after this message appears, but it is 
recommended to replace the developer unit. Contact your dealer 
and prepare a new developer unit.