I know I'm reaching back here. Black lines about 1mm wide in the cross feed direction equal to the drum pattern. Changed drum and it went away for a day and came back. Changed composite power supply, still NG. I noticed the black even shows up in all the void areas. Going further, I found, by stopping the machine with the copy under the drum, that even with a white original, I still get the lines AND the drum is completely coated black but only transfers the lines. Wish I had a dv unit to swap but the fact that the lines perfectly match up with the drum circumference I doubt thats the problem. Gonna change dc controller tomorrow but thought I'd reach out for other ideas. Thought I saw everything on this model, I guess not.
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