17
9.2
Volume adjustment
Volume Adjustment : Open the coin door and find the volume
potentiometer on amplifier board, adjust the volume by
turning it. Turn the potentiometer clockwise to make the
sound louder; turn counterclockwise to make it smaller.
功放板
Amplifier board
Amplifier Board Volume Potentiometer
! Attention
Please turn the volume potentiomenter slowly. Do not turn to the
rightmost position at one time to prevent the sudden increase of
the volume output current and burn the speaker.