Follow the steps below to clear the message:

• The corona wire on the drum unit must be cleaned. Clean the corona wires in the drum unit.

  Click here to see how to clean the corona wires.

   

• The drum unit or the toner cartridge and drum unit assembly is not installed correctly. Put the toner cartridge in the drum unit. Then reinstall the toner cartridge and drum unit assembly in the machine..

  • Click here to see how to reinstall the toner cartridge.

  • Click here to see how to reinstall the drum unit.