Originally Posted by
rsantos325
Multiple reports indicated in this post has fixed this issue by either drum kit (which includes new charge roller), developer kit, Front PWB, High Voltage PWB, or Transfer Belt. I experienced first case being the Front PWB. Another one of my personal experience was the Transfer belt addressing this problem. The Maintenance Kit includes the Transfer Belt, Drum, and Developer. So it may be between these 3 parts in most cases. There has been a change to the Transfer belt about a year or so ago that require mylars to be placed or removed depending how far the transfer belt tracked by measuring belt front machine edge to the metal frame. Since this change of transfer belt (assuming change in the production/manufacturing of the transfer belt), I've experienced uneven density, transfer belt tracking to either front or rear of the machine causing damage of the transfer belt, or the thick black band in question. This transfer belt issue is linked to the 00 (5500i), 01 (5501i), and 7002i/8002i series machines. So far, the thick black banding issue only seems to occur on the 7002i/8002i machines.
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