getting ghosting mainly on sef paper; what's peculiar is what I see at the lead edge (top 1/4 of page) is what's at the bottom. lef paper doesn't show problem; had to make a better ground for drum appeared to help yet problem returned; used contact cleaner on back side of copier on all areas of drum grounding points; cleaned iob pcb connections as well as bcu; problem continues; thinking of swapping out pcu and/or dev units before swapping copier; any thoughts???
Thanks
Thanks