Service mode_Schematic_ marantz ST-15S1 DAB / FM / AM Tuner
To reset all settings to default status;
1. Press the Power button to turn on the power.
2. Press the Menu button and Band select button at the same time, and pull out the mains cord from the socket.
3. Re-plug the set.
During initialization, it is converted to DAB auto Tuning state.
If step 3 does not work, start over from step-1
If the microprocessor has been initialized all the button settings are reset to the default values; the values set upon shipment from the factory.SERVICE MODE
> Connect mains cord to the unit
> Press the Power On/Off button, while pressing Menu and Display button. All segments of FLD will be light ON.
> Turn GYRO TUNING dial. Version is displayed on FLD
> Turn Off power to quit the service mode.
SCHEMATIC (Circuit Diagram)
CLICK ON THE SCHEMATICS TO MAGNIFY