Accuriopress c3070l leaving red lines all over the document

Hello! I hope you are well.

Our trusted Accuriopress c3070l is leaving red lines all over the document, not always in the same place, sometimes one, sometimes two. I am attaching images to show:

Accuriopress c3070l leaving red lines all over the document - Album on Imgur




Transfer belt and drum were recently changed, coronas today.

Thank you for your help and best regards,

David

 

Take two pieces of 8.5 x 11 chipboard (or one 11 x 17) and place them on the glass. Then make a copy in each color. C, Y, M and K. Solid color. Inspect each. If you see line it's a drum of which ever color you see it on. That's the first thing I'd do.