Question about HP LaserJet 2420 Printer
The corona wire/roller is the main charging unit for the static drum and the paper, if that is dirtied by toner u will get smudges all over your pages even with a new catridge. if ur familiar with the corona unit try cleaning it but be careful not to damage it. other wise take your printer to the technician.
Posted on Nov 09, 2010
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Posted on Jan 02, 2017
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