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電子キーボード Yamaha Electone BK-20AのPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Yamaha Electone BK-20A 28 ページ。 Owner's manual
Yamaha Electone BK-20A にも：マニュアル (28 ページ), マニュアル (28 ページ)

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Do Not Be Alarmed If....

1. A note should sound the instant you turn on the switch.

This merely indicates normal operation consequent to a surge of electricity in the main amplifier.

2. Only one note is produced even when two pedals are depressed simultaneously.

in order to achieve tonal clarity, the Electone is designed so that a note is electronically supressed the

instant the next note is struck. If two pedals are struck simultaneously, only the higher one sounds.

3. Occasional unpleasant static occurs.

In the majority of such cases, the cause can be traced to the turning on or off of refrigerators, washing

machines, electric pumps or other household appliances.

Electrical fault in a neighboring outdoor neon

sign may also be to blame.

When the cause is a home appliance, connect the Electone to an outlet as far as possible away from the

offending appliance. This phenomenon, although annoying, poses no danger to the Electone circuitry.

If the cause is a fault in a neon or fluorescent lighting fixture, it should be repaired. When the cause is

unknown, or in case of doubt, contact your Yamaha dealer.

4. The Electone can at times reproduce radio or TV sound signals.

This can occur when there is a powerful! radio or TV transmitter, or an amateur radio operator located

in the vicinity. If the situation is distracting, contact your Yamaha dealer.