Brother MFC-9560CDW scanner problem

[Walter]

I love my MFC laser unit. The only problem is that there is a vertical line every time I scan something. Any suggestions as to how to resolve. Thanks in advance.

Walter Bender

 

[Underwood]

A white line might be from the corrona wire with a piece of debris on it. Usually there is a tab that can be used to wipe it with
horizonally. Take out the drum unit and look. You do not have a scratch on the drum hopefully. A black line could be debris on the scanner. Not too serious. Takes a good key operator in the office.