Up/Down Movement Circuit Operation

When a selected mirror is moved down by the Mirror Adjustment Switch (X146), the internal contacts move to the "Move Down or Left" and the "Move Down" positions. The Up/Down motor of the selected actuator is grounded at E200 through the SW wires and the switch contacts. Voltage is applied to the Up/Down motor through the BK, BN wires. The mirror now moves down.

When a selected mirror is moved up by the Mirror Adjustment Switch (X146), the internal contacts move to the "Move Up or Right" and the "Move Up" positions. The Up/Down motor of the selected actuator is grounded at E200 through the BN, BK wires and the switch contacts. Voltage is applied to the Up/Down motor through the SW wires. Since the polarity of the voltage to the motor has been reversed, the mirror now moves up.