try to replaced the toner supply first, it seems toner is not dropping effectively, this is cause by after market toners or compatible toner.
.....with all it shams, drudgery, and broken dreams, it is still a beautiful world.....
Manualy add Toner and see if image darkens. Was the image light after you put new developer?
I was off for 2 days and im wanna go to my office tomorrow. i m going to replace id sensor with 2035 ' id sensor as a temporary check to see whats going on.
replaced the developer roller.. finally problem solved
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