The older Gottlieb games will start a game or light up and add credits when a coin is inserted (coin switch tripped).
They have a kickoff switch on the coin door and on the motor panel. When they're properly and carefully adjusted, a little slap under the cabinet, or a good knuckle knock on the center of the coin door will drop out the hold relay, thus turning off the machine. When they went to a push button on the bottom of the cabinet, I imagine many people griped about losing their coins in a machine which was switched off. Then they came up with the coin diverting setup, which would return any coin dropped into a switched off machine.