When printing or copying numerous black spots appear on the paper
SOURCE: spots on page
You need to clean the drum unit (use a soft cloth and/or a soft paint brush) and also slide the blue slider a couple of times to clean the wire.
SOURCE: ink spotted printing problems
hi friend
ur cardige have been damged u have to do this try to clean ur cardige going in by printer maintaince tools if problem occres then replace the old cardige
SOURCE: mfc-7420 Black Line horizontal across paper in 3 places
try moving the small blue slider on top of the drum cartridge side to side 10 times.
SOURCE: Black toner spots appear on print outs
You have something stuck on your drum. See page 125 of your manual to clean it--it's just isopropyl alcohol on a Q-tip, but don't scrub. This happens (too) often to some people I know.
SOURCE: I purchased a new Brother TN-350 Toner, however
There's toner on the roller or the fuser wire needs cleaning. Open the printer, remove the toner cartidge and clean the inside of the printer with a soft brush.
Testimonial: "Thank you so much for your advice. I clean the roller and it's printing without the black spots on the paper. God bless you!"
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