Question about Brother MFC 7420 All-In-One Laser Printer

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Line down page on copies

I have a black line going down the page when I copy (I don't have the problem when I print from a file.) I've just replaced the drum, which helped a bit, but not much. I cleaned the corona wire, and the laser scanner window, and the inside top of the machine. Is there anything else that can be done?

Perhaps I'm not cleaning the laser scanner window correctly. What cleaner should I use? I just used one of those magnetic-type duscloths.

Thank you!
Joanne in Manhattan

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What kind of line. Is it solid and think with well defined edges or is it a small thin and dotted? If it is solid with strait crisp edges you will need a new scanner. If it is just a small somewhat dotted you might just have a little something on the scanner glass. Clean it with regular rubbing alcohol and a cotton cloth like an old t-shirt. Don't use swabs or tissue because they can leave lint behind and just give you more lines.

Posted on Feb 18, 2008

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