OK, here's a summary of the reset sequence. Relays O, R, and S are used in the Gottlieb-standard manner.

1. Coin or Credit Button turns on Relay S. S stays on for one cycle of the Score Motor.

2. S turns on R, as usual, and causes the drop target banks to be reset. S also turns on A, which is an interlock type relay. A holds on the Motor as long as it's on (off at Step 8 below).

3. A turns on Z, which is a conventional relay but a subsidiary to A in a sense, because it stays on as long as A is on. (See 13H on the schematic.)

4. Z does some actual work. The first thing it does is feed Motor 1A pulses to the score reels, to run each one around to zero.

5. Once all four score reels are at zero, the V relay goes on.

6. The combination of Z on, V on, and W off allows Motor 1A pulses to be fed to the Subtract Ball Count Unit coil. Thus, if someone pulled the plug mid-game, the Ball Count is run down to zero regardless of where it was.

7. Once the Ball Count is at zero (and Z is on), Relay W can be turned on, but it is only turned on during a certain point mid-cycle on the Score Motor, which point is determined by whether the 3-ball or 5-ball option has been chosen.

8. W feeds power to the Score Motor and feeds pulses to the Add Ball Count Unit coil. At the last of the pulses, it activates the A Reset coil, thus "turning off" the A interlock relay (more precisely, setting it to the not-currently-resetting state). With A off, Z goes off.

9. All the switches on the right-side rail (see 11I on the schematic) are now set up so that the ball in the Ball Return will cause Relay O to go on.

10. O causes the ball to be served up, but V is still on, suppressing the Trough Switch from stepping the Ball Count Unit.

11. V finally goes off when any one of the score reels steps away from zero.
The above omits some details about activities being suppressed by various switches, tilt being cleared, etc.
.................David Marston

Hi Howard,
Thanks so much for the information. The W relay make/break was cleaned but did not cause power to be directed to the Subtract coil. I followed the sequence provided by Dave Marston but can’t visually picture it on the schematic.

Could you highlight the pathway for the W coil activation in a return email if you get a chance, similar to what you provided for the Subtract coil.
Thanks Howard. Hope all is well in Boulder CO.
Steve

Thanks David and Howard. Was able to trace the startup circuits. Determined that the 4 Reset Switches which should be closed might be the issue. Are these located on the individual score reels?

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