I have replaced the developing unit, a new charge unit, new cleaning unit assembly and a new drum, the problem still happens, I have also lowered the density to - 3, any ideas what should I do next? IMG-20210319-WA0000.jpgIMG-20210319-WA0001.jpgIMG-20210319-WA0002.jpgIMG-20210325-WA0025.jpg
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