Un load the drum unit, check the drum/s gear, is it wear off, if so change it along with the drum's drive gear at machine base, check also the gears of developing unit
I do not have this connected to our computer system. I tried this out, I put a page of print on the...
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I do not have this connected to our computer system. I tried this out, I put a page of print on the glass to copy. I got 2 or 3 black lines mid page along the print path and no image. I then blew it out with canned "air" checked out the roller ... I thought a piece of paper had broken off and got caught. I emptied out the used toner reservoir (sometimes that messes up sensors). retried same results. I'm not getting a code error the printer thinks it's doing fine.