MX980 w/MSC 400 - Marantz CC4000 5 disc CD player - probably about 5-7 years old. None of the 11 or 12 (can't remember right now) code sets in the URC IRDB will work this unit. I tried all 12 and could not get any of the transport commands to function.

I did not have the factory remote at the time (I do now) so I could not learn. But I can't believe that all 12 in the DB will not function. WTF? Anyone have any ideas?