Question about Brother MFC-7820N Laser Printer

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Printed pages look dirty

When I print or copy anything on this printer, the copies look dirty, with all sorts of black smudges on them. The smudges roughly look like vertical lines, but not solid vertical lines, lines of spots. Is it a matter of cleaning the toner cartridge? If so, I need some instruction on how to do that safely because I don't want to break anything. When I took the toner cartridge out and shook it back and forth (as I was instructed to do by Brother technical support), some black dust fell out. Not sure what that was about. Appreciate any and all suggestions. Thank you!

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  • Anonymous Mar 15, 2014

    After I changed drum and toner cartridge, there's still a black vertical line on page?

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That black dust that fell out is the toner. When you shake a toner cartridge that shouldn't happen. It looks like you have a faulty toner cartidge and that need to be replaced! Now to make your printer prints cleanly and clearly after you replace the cartridge, you'll need to get someone to service the printer(the faulty toner cartridge more than likely spilled toner on your internal printer parts, cause the smudges). Sevicing would mainly entail, taking down the printer and removing any spilt toner! If you feel you are up to this, be cautious, because toner can be hazardous to your health if you accidentally breathe it in! hope this was helpful! regards babb

Posted on May 10, 2007

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Open the lid there are two areas of glass the thin strip is likely dirty and needs to be cleaned.

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