Hi all I need help in understanding the issue I have with a 2 stop montgomery hydro. Its a solid state controller, the top rack has the input boards with the power supply and cpu boards. The bottom rack has the output boards, below the racks is an relay board with LU, LD, UX, DX, UA and a few more relay I cannot remember.
This is the issue, the car is outputing fire light and buzzer; their is no fire inputs at all. Try taking the car to fire floor and open door, try manuelly put on fire service but couldnot reset fireman service. I also notice if I make AESS input low and make ECB input high the ouput for fire service goes away but the car will not run.
Have swap input and ouput boards around, replaced the power supply board cause thr 5vdc had 0.5vac on it.
Does anyone have any ideas, I can move on inspecton.
