Use the following procedure to initialize the A-300PRO, A-500PRO, and A-800PRO and re-load all of the factory default settings:
- Simultaneously press the [ACT] button and the [<] button.
- Use the [VALUE] knob to select “FACTORY RESET,” and press the [ENTER] button.
“SURE?” will appear, blinking, in the display. - If you are sure that you want to execute the factory reset operation, press the [ENTER] button.
“FACTORY RESET” will appear, blinking, in the display while the factory reset operation is being carried out.
Once the factory reset is complete, “COMPLETE!” will appear in the display. You’ll then be returned to Play mode.