Hello!

I'm running into an issue running the background music through CO4. I have just a basic discman hooked up, it plays through the telephones like it should for 42-45 seconds... then cuts out completely. It will come back if I reset the CPUI card, then turn the BGM off then on again. I've got the port set to CO4 in 1-1-79, but I just can't figure out why it would work for 45 seconds then crap out. Thanks!