Would love to help but you need to be our eyes. We cannot see the machine so you need to do the leg work.
1. Picture of the entire machine from front
2. Picture of machine with door open
3. Picture of the computer board. Or in some cases there were Sigma machines with computer-like motherboard on a slide-out tray.
4. A picture of the power supply unit, especially if thats where the test button is.
5. A picture of the side of the machine with the reset lock (s)
I just about guarantee you if two or three of us had a good visual of the machine we could get into setup, or at least make some progress, but what we cannot do is wave a wand and make your machine start working.
Some time in the early 2000’s Sigma merged with another company and they started using a different system, it wasn’t anything like an early Sigma machine. Its basically a PC running a CD Rom. We need to see what you see.
Chris