Hey guys, I have a mp6503 with an intermittent J003 problem. No toner dropping from dev unit and meter at 700k. Have gone in and switched T1 and T2 feed units as customer says they can run their jobs from T2 and then T2 runs and T1 jams again. Went in there and put a new feed unit in T1 and ran 500 sheets through no problems. Customer called back with same issue. What am I missing?
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