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Left pins, from below) - Clock Rate - variable resist +6k between U2-8 and U2-9 - Reset Sw - when pressed, short +12V and Reset In socket - Reset Sw - when pressed, short +12V and Reset In socket Reset Socket to U3-3 = capacitor measurement roughly 15nF (has a resistor as well - Once/Cont 11 Toggle Switches, 2pin.

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