Error Code 7D – Drum Error on the Brother 8480, 8890, 8080, 8085

Diagnostic Aids for the Error Code 7D Drum Error on the Brother 8000 Series Machines The Drum Error on Brother machines is typically a result of dirt on the corona wire. I usually find this error on machines that are used in dirty environments, use third-party or compatible toners, and on machines where the customer didn’t replace the [...]