I just received a new developer and drum unit, which came in separately so i had to attach them together ( i hope i did it right), i installed the developer/drum into the machine, i had to give it a few pressure on it to slide in right, then installed the toner. Almost everytime i make copies it jams right below the developer unit. I am not so sure what is wrong, weather it is the new developer that i got or something else with the machine.
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