[Jukebox-list] Rowe R84 computer troubleshooting

[Jeremy Agema]

I am working on a Rowe R-84 computer. I understand it would be quicker and 
easier just to send in the computer for repair but I like a challenge. I do 
have the schematic for the computer.

I have replaced all the small signal transistors, removed the battery, and 
just for fun replaced all the small signal diodes, and I have re-soldered 
all the joints. I also cleaned the service switch.

The processor seems to be locked up (no data going in or out). When the 
service switch is on or in the service position the record basket just keeps 
going around picking up random records and replacing them. But the processor 
is still locked (verified with a logic probe).

Does anyone know what inputs I need to give it so it will at least go into 
audit mode on the bench? (the juke is 30 miles away) I have a 8 volt power 
supply. I think I have it figured out but I wanted another opinion.

I think I just need to connect the 8 volts and ground to get it into audit 
mode. The 8 volts "on" signal pin should get it into play mode.

Thanks
Jeremy Agema