How to fix vertical black lines when receiving on Brother MFC-8370DN?
- TTracie WilliamsSep 2, 2025
If you see vertical black lines when receiving faxes on your Brother All in One Printer, the corona wire for printing may be dirty, so clean the corona wire. If that's not the case, the sender’s scanner may be dirty, so ask the sender to make a copy to see if the problem is with the sending machine. Try receiving from another fax machine. If the problem continues, call your dealer for service.














