I have a customer with a S2825cdn Color Laser printer. It's having a problem with dark banding along the right side, and left side of the page. The banding is always black toner with even spacing, about 10 times identical. It doesn't look like tracking from a bad fuser, but I checked and cleaned the fuser film with no change. I printed the the scale test page from the utilities and the pattern matches the "b-4 (Deve)" scale for banding, and the "a-2 (Xero) scale on the spots & dots side. I have not been able to find an explanation of what this relates to in the printer. I assume "Deve" is short for "Developer". My guess is that it's the black drum but the customer doesn't have a spare to swap it out. Is this a good guess?
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