Front Panel
On/Off Switch (5)
The On/Off Switch controls power to the power transformer and circuits of the GFA-7705/07. Whenever the GFA-7705/07 is energized the Power LED (7) will glow. To turn the GFA-7705/07 on, press the push-button. It will remain in the “engaged” position while the unit is energized. To turn the GFA-7705/07 off, press the push-button in and release and it will move to the “disengaged” position.
Power LED (6)
This LED will glow when the On/Off Switch (5) is turned on and the GFA-7705/07 is energized. The Power LED indicates that there is AC voltage being fed to the amplifier, but it does not signify that all the amplifier’s circuits are in operation. If, for example, one of the Thermal Protection LED (8) glows, that amplifier channel will not produce sound even though the Power LED may still glow. When the GFA- 7705/07 is turned off, the Power LED will take some time to fade out completely. It may take up to 30 seconds to fully extinguish.
NOTE: Whenever a 12 Volt trigger connection is made to the GFA-7705/07, the Power LED will not illuminate, whether the On/Off Switch is pressed in or not, until a 12V signal is present from the triggering, source product. Please refer to Section 3a, 12VDC Triggering.