Odpowiedzi na często zadawane pytania i rozwiązywanie problemów

Follow the steps below to clear the message:

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

  > Click here to see how to clean the corona wire.
   

• If the issue still continues, replace the drum unit with a new one.

  > Click here to see how to replace the drum unit.