Anonymous Posted on Dec 07, 2007

MFC-9840 prints vertical stripe ~2" from right edge on all color printouts

Sorry- I realize that the MFC-9420 isn't the same as the MFC-9840, but I didn't see a section for the 9840, so I hope it's OK.

We've got a new MFC-9840CDW that's been printing a small 1/4" vertical pinkish strips about 2" from the right side of the paper. It doesn't appear when you print/copy black and white and doesn't appear when you print/copy a blank piece of paper. It's most noticeable on any full color image - appearing slightly pink on gray backgrounds (noticeably) to being barely noticeable on darker colors such as blue. Thoughts? TIA

Anonymous Jan 16, 2008

Thank you for the response. The problem was resolved by replacing the Laser unit by a field service technician. Prior to that, Brother attempted to throw parts at the printer by replacing the Drum Unit and Magenta toner cartridges.
Anonymous Jan 16, 2008

Thank you for the response. The problem was resolved by replacing the
Laser unit by a field service technician. Prior to that, Brother
attempted to throw parts at the printer by replacing the Drum Unit and
Magenta toner cartridges.

1 Answer

Wyman Petro

Contributor 11 Answers
Posted on Jan 04, 2008

Wyman Petro

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Joined: Jan 03, 2008

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Hi,
The first thing i would try to do is clean the corona wire on the drum unit. It might also be a faulty magenta cartridge.

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MFC-9840 printing Yellow/Red/Blue strips in background. Any ideas why?

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MFC-9840 prints vertical stripe ~2" from right edge on all color printouts