Called about trouble with cardstock found upon servicing that drawer 2 was not recognized. Cleaned and reseated connections on the pcb of 2nd drawer and drawer started so. Turned copier off to move and after turning back on error C0420 popped up. Book says first paper feed??? Both trays are considered 1st of??? Is problem most likely in pcb of draws 2 or in copier. No noise was heard . Thanks!!!
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