Jumper Settings                         Output Signal                                        
                                                                                             

RY34     DC34    DC2      DC4         Pin 2            Pin 4           Pin 34          
                                                                                       

ON       OFF     OFF      OFF         Open             Open            Ready           
                                                                                       

OFF      ON      OFF      OFF         Open             Open            Disk change     
                                                                                       

OFF      OFF     ON       OFF         Disk change      Open            Open            
                                                                                       

OFF      OFF     OFF      ON          Open             Disk change     Open