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Have you tried any of the actual reset procedures?
Was the error message like this:
026A Ozone filter replacement required
If so, then you need to do the procedure where the error message status in memory is reset. I may be able to provide you with this control sequence, if you will confirm as to exactly what message is still showing on the Ricoh machine.
(-By the way: It is an OCE machine, not a Ricoh machine, isn't it?)