OK/Red Letter Game - Unit Stepping Pulse Stream
The purple circuit contains the pulse generator switch. When the shutter panel is open and the position 29 relay is powered (which happens when the R-button is held down to collect an ok/red letter win), the 16 pulse cam switch next to the mixer motor is continually opening/closing and generates a endless stream of pulses.
These pulses get directed through a super OK relay switch (unique to bounty - we'll look at that last) and flow to both the ok/red letter unit step-up coil and along the green circuit path to feed the green score unit discussed previously.
The ok/red letter unit steps up repeatedly until it reaches the top/24th step, at which time the pulse stream is disconnected from the unit's step-up coil so the unit isn't endlessing trying to step up further than it's maximum position - and cooking the coil in the process.
The interesting thing is where the pulses travelling on the green circuit winds up as the ok/red letter unit wipers keep rotating onto new rivets on the contact plate.
