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The P.C. Board causes the motor to run in a forward direction when the "ON” Switch is actuated and turn off when the "OFF/REVERSE" is momentarily depressed. When the "OFF/REVERSE" Switch is held down PCB1 reverses direction of the motor. If the motor stops due to a jam, PCB1 will reverse the direction of the motor then shut off after the jam has been ejected. When the "ON" button is depressed, contacts A and B of SI close momentarily completing a circuit between PCB1-1 and PCB1-3. At this time