I'm installing a new sound board in my Gottlieb Genie machine. I removed the outer space sounding Williams board that was in there when I got the Genie. I've re-spliced all of the wires back to the A7J1 connector according to the color codes. I want to test the voltages with my meter on each of the pins of the A7J1 before connecting to the board, but I don't know what the voltages should be? The schematic seems to show voltages only after passing through a resistor, transistor, capacitor, etc., but not what they are coming from the connector? Am I just reading the schematic incorrectly? Also, the schematic shows that only pins 3-12 are used. Do you read them 1-12, left to right as you're looking at the "A7J1" label with the connector pins facing up?
I appreciate anyone's help.
RRMUSICMAN