| Metronome drains battery quickly even when off. | Potential residual power draw in "OFF" position. | Remove the 9V battery from the compartment when the metronome is not in use for extended periods to prevent premature battery depletion. |
| Sound is too loud. | The MR-800 has a powerful speaker with no integrated volume control. | To reduce volume, place a piece of tape or a small cloth over the speaker grille. Adjust the amount of covering until the desired volume is achieved. |
| 音が出ない、または断続的に音が出る。 | Low battery, faulty earphone connection, or internal issue. | - 9V電池を新しいものと交換してください。
- Ensure the earphone is fully plugged into the jack. Test with another earphone if possible.
- 問題が解決しない場合は、カスタマーサポートに連絡してください。
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| LED display is dim or not working. | Low battery or internal LED fault. | - 9V電池を新しいものと交換してください。
- 問題が解決しない場合は、カスタマー サポートにお問い合わせください。
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