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

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Vertical lines on photocopies/faxes

We (myself and 3 other psychotherapists) have a desktop photocopier/fax/printer, which has begun to make 3 dark, close-together vertical lines through any copies that are run through the feeder, and on any faxes we receive. This doesn't happen on copies made on the glass platen.

I took out the toner cartridge, shook it, ran the cleaning thingy back and forth a few times, but no change. (This also happened on our previous copier, which was a small HP inkjet machine.)

Please help!

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  • austin_aggie Feb 12, 2009

    Did the clean up work for you? I am having the same problem.

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  • 6 Answers

The MFC-7420 Manual recommends cleaning the scanner glass and white plastic bar above it with isopropyl alcohol. Page 11-22 has a diagram.

I am having a similar problem but cleaning it did not work. But try that first.

Posted on Feb 11, 2009

  • Barbara Feb 11, 2009

    Here is the page from Brother's site with the diagram and instructions for the above.

    http://welcome.solutions.brother.com/BSC...




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