AVK200 home theater amplifier and maintenance 03

(3)
    After the total volume control circuit 1NZ receives the signal from the remote control regarding the increase or decrease of the total volume, the control signal output by the @ or @ pin is sent to the
⑤ or ⑥ pin of 1N 4 (I, B1641), so that the 1N4 The space between ③ and ⑩ pins is +12V or -izv to control the forward and
reverse rotation of the motor potentiometer to achieve the purpose of controlling the volume.