Question about Brother MFC-9840CDW Laser Printer

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When I print I have black dots on it and a red

When I print I have black dots on the page and a red line on the edge of the paper

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  • adolfsingh Oct 08, 2009

    The document prints normally, but along with it a red line prints on the right hand side (edge) as if someone took a thin red marker and ran over the edge of the paper.

    Also, about one inch from the right side there are several ink marks (black). These are evenly spaced and looks like some one put black marker pen dots.

    There is something happening with the black and red ink cartridges or the hardware that handles these two inks is causing it.

  • Mikecanfix May 11, 2010

    Does the text in the document print also? Is the red line on the side of the page, top or at the bottom?

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  • 37 Answers

The drum probably needs to be cleaned. Refer to the Routine Maintenance section in Appendix C of your Users Guide.

Posted on Oct 09, 2009

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You could remove the drum and carefully look for the pattern of dots etc that you are getting on the page but on the drum surface.

I would suggest replacing the drum 1st and retrying.

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