Thank you, I replaced the developer ultimately, because the toner sensor output value was -21, it wad stating "toner empty", and there was plenty of toner. The new developer brought the toner sensor output value back between 3 and 5, as it should be. However I am still getting fluctuating toner density on the page. It is in a "metal shop" environment, so maybe something is shorting? I have a high voltage board on order, but I would appreciate any advice!
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