I am not on jobsite right now, it was DUP not picking, DS4 appears to be a microprocessor output, see attached pic of print section. Had power at TM-12, F20 good, nothing at TM-11. I guess K4 relay turns on from DS4 microprocessor output, correct?
I will verify power supply at EPROM, that is a good idea and something to eliminate. Thanks for the help, any other thoughts before I go back out there is appreciated.
