MFC-9140CDN

FAQ & Fehlerbehebung

Clean the corona wires

If you have print quality problems or the machine's display shows Drum !, clean the corona wires as follows:

Open the top cover until it locks in the open position.
Take out a toner cartridge and drum unit assembly.
Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right to left several times.

Be sure to return the tab to the home position () (1). The arrow on the tab must be aligned with the arrow on the drum unit. If it is not, printed pages may have a vertical stripe.
Slide the toner cartridge and drum unit assembly into the machine.
Make sure that you match the toner cartridge color to the same color label on the machine.
Repeat Steps 2 to 4 to clean each of the remaining corona wires.
Close the top cover of the machine.