Hi gang, you may remember a few weeks ago a fellow Pinsider was posting here with issues on his GTB Volley. The O relay won't fire or engage and thus, the ball won't kick out.
I think he got a little frustrated -- alot of it was just his newness to the hobby and not being able to read a schematic.
He reached out to me and I'm trying to help him. I'd love YOUR help as well. Although I can read a schematic fairly well now, I still do struggle with bits of it.
Below I've pasted what I think are the two pertinent pieces of the schematic and the Operating Instructions start-up sequence in the manual.
First, the symptoms:
Upon power up, he says the game score motor turns, the score-reels reset to zero, and all three target banks reset. That appears to take us all the way to Step 5 in the Operating Instructions in the image below. I should note that in order to GET to where we are now, he did some adjustments on the game, as before it was not getting that far through the start-up sequence. I believe he made an adjustment, he says, to the O and Q relays.
He says that he does have power to the flippers, but that O never pulls in (and obviously doesn't stay locked in). He says it's as if the score motor isn't turning long enough.
Here's where I'd like your assistance so I can help him. He does not have jumper wires to my knowledge, nor does he know how to use them. I was going to have him do the following:
1. Double-check that the outhole switch is cleaned and adjusted so that it's closing firmly when the ball is there.
2. Then check the O Relay and the Yellow+Red wire which runs the motor. Seems like if the outhole switch checks out, that's the next place to start because O should be actuating and that switch should be running the score motor.
After that, I'd like your help. I see the path through the NC switches at Motor 1C, Motor 2B and the Start relay, and assume I should have him check those next? Then I'm not sure about the far-right side of the schematic where it shows the NC switch on the Ball Count Unit and also the make-break switch with the red wire on AX. Do those last two also need to be checked?
One last point of confusion for me. The Operating Instructions startup sequence in Step 5 says that a motor 4C switch closes and actuates the ball return coil, which kicks the ball out. Why is that 4C switch not in the path below?
Thanks for your assistance.
Mark