[Jukebox-list] Seeburg KD200 Plays Continously

Hello, I have a Seeburg KD200 which has been working for 10 years. However, now after making a selection it now plays all records sequentially starting at the position of the mechanism ignoring the selection. I have a Service Manual which describes in detail settling and adjustments. In order to trace this fault a 'Control Sequence Diagram' would be very useful. I have seen Control Sequence Diagrams for later Seeburg JBs - semiconductor models which gives some information. I have inquired on other forums without reply. Any diagnostic information will be appreciated. Can anyone please tell me "what is the signal or relay/solenoid that is activated when a record has been returned to the rack"? Rod