The DB-30 can be restored to its factory settings by holding down the START/STOP button while turning on the power.
- Turn off the power.
- Hold down the START/STOP button, then press the POWER button to turn the unit on.
"F" appears in the display while the START/STOP button is held down.
Note: After a factory reset, Tempo is set to 120, Beat to 4, Reference Tone to A, and Reference Pitch to 440 Hz.