Power Button (PWR) - On/Off Switch
UM7:
Depressing the "PWR" knob will alternately turn the radio on or off. On UM7 and UN6 (Buick) the power knob is a rotary ON/OFF switch that is shared with the volume control.
Depressing the "PWR" knob will alternately turn the radio on or off. On UM7 and UN6 (Buick) the power knob is a rotary ON/OFF switch that is shared with the volume control.