Question about Brother MFC-8870dw Wireless Multifunction Laser Printer

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I have small black dots down the left hand margin of each printed page approx 10cm apart. MFC8870DW

Copies, faxes, anything that is printed

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10cm means it's caused by a large roller. The only roller large enough for that would be in the drum. Replace your drum and it should clear up, the model number of the drum is DR520.

Posted on Dec 03, 2014

Testimonial: "Thanks! I decided to look in the manual, on page 131, and found instructions for safely cleaning the drum. This has worked! Thanks for pointing me to the drum."

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Related Questions:

1 Answer

2" black band prints on right-side of every page


print a report, any report, from your control panel. if it looks good and your band is only on copies and transmitted faxes, that would be your Contact Image Sensor going bad. its located under your document feeder and looks like a sinny piece of glass that runs left to right.

hth,
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1 Answer

I have small black dots down the left hand margin approx 10cm apart- machine is only 12 months old


hi

First try printing a few pages to try and clean the drum unit. If the problem is not solved after printing a few pages, the drum unit may have glue from a label stuck on the drum surface.
go to this link -- below for further instructions

http://welcome.solutions.brother.com/BSC/public/us/ca/en/faq/faq/000000/000200/000016/faq000216_016.html?reg=us&c=ca&lang=en&prod=mfc9440cn_all&Cat=112


hope this helps

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1 Answer

Copies are being printed with a line vertically down the side of the page. Only happens when copying using the hopper.


If it's a thin, sharp line, it's just a blob of ball-point pen ink on the scanner glass. Lift the lid, and you'll see the narrow strip of glass that the scanner uses when you feed a document through the feeder. Clean that with a rag dampened with window cleaner, or, better yet, alcohol. Even a dot of ink too small to see will show as a solid black line on anything you copy, scan, or fax via the doc. feeder.
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1 Answer

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1 Answer

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It's probably the toner cartridge again. See if you can spot defects at the cyan drum unit that matches the marks on your printout.

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On the left side of the on/off switch is there a small button mark with 123 press that button and the meter reading will display.
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