Question about Brother MFC 7420 All-In-One Laser Printer
We have the mfc 7420 and everything we print is coming out alost all black and the drum itself is full of a thick black dust
Most likely cause is a bad toner cartridge. It's likely dumping excessive toner inside the printer. try taking the toner out and hold it sideways and tap it, if toner falls out then your cartridge is defective. try vacuuming the printer and wipe it clean with a dry cloth and and replace the toner with a new one.
Posted on Oct 05, 2009
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Posted on Jan 02, 2017
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