Description
- It gets caught in the startup sequence. So what do I see?
- I press the replay button.
- That energizes the Start coil, which changes the state on the Start/S relay pair
- That starts the score motor running
- It resets the horse sequence units with a switch on Motor 2D
- It loops on this forever - If I force trip the S relay, then it
- resets the scores
- energizes the ball release coil
- that stays energized until I hit something that generates points
- from here the game plays as normal - Also involved is the Z or Reset relay. That is triggered by the “minus 1” position on the 100,000 stepper. So I guess something kicks the reset solenoid on that?
- So what’s the whole sequence?
- replay button
- start coil, flipping S switches
- disables the start button
- enables the score motor?
- both
- enables subtracting a replay
- resets the 100,000 to minus 1
- the 100,000 minus 1 switch triggers the Z/Reset relay, which
- triggers the ball release
- starts the score motor
- enables the flipping back of the S relay when the score motor hits 4C
- subtracts a replay at 1C
- activates the horse resets
- triggers the T and Counter relays - When I started this debugging, I knew one of the switch stacks was bent way out of true. But I discounted it as probably irrelevant, because I thought it had to have been that way before. However, bending it back and fixing the switch alignment fixed the problem. I did adjust some wire positions, so maybe there was a compensating short?
- The machine is now back to being playable. There are a number of small things, one of which is that the backbox lights are a little off because the wood has worn or has bits missing. I used some putty to hopefully fix it.
Media
No media.