Hello, i replaced the drum, blade, PCR and brush along with the fuser rollers. 883 copies later they are getting heavy background with a double image with the same circumference as the drum. but the first copy looks but gets progressively worse if you run ten for example. i have replaced the drum again and same thing. since i didn't write the lot number down on the first one, i don't know if its the same. i also checked all the contacts and cleaned them. checked drum ground. i get .269 on the oms diode scale, infinity on the 200 scale and between .450 and .650 on the 2K scale. so, there is not a perfect ground to the drum. does anybody know what the drum resistance should be? or what else i should check? i may also try another drum from a known different lot number. i didnt see any contact or wire on the back side of the drum drive coupler unit. i do see that the black hub has the charge going thru the hub. thank you very much for any input or advice. i is very much appreciated.
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