Nostalgia Electrics Classic Music Jukebox Retro Nostalgia AM/FM Radio CD Player Shelf System "nsm cd error codes" Questions

...far as I know the eprom is in the computer. The computer is directly below the CD player. So duff computer? hi there i have a nsm galaxy juke box does anyone know what error 74 means many thanks ...

mijn nsm galaxy 200 gifs eror code 30 wat das it meen error code 30 =memory contents invalid you need to reprogramme