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電子キーボード Yamaha Electone BK-20C SeriesのPDF 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-20C Series 20 ページ。 Owner's manual (image)
Yamaha Electone BK-20C Series にも: マニュアル (20 ページ), マニュアル (21 ページ)

Yamaha Electone BK-20C Series マニュアル
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Read the following before playing
In general, treat your Electone with the same care you would any fine musical instrument.
The follow-
ing points are suggested for optimum enjoyment.
1. Use only proper line voltage.
Consult your
5. Shield the cabinet from direct sunlight, hu-
Yamaha serviceman for changes.
midity
and
heat to protect the finish and
joints.
As to British-Standard
Model,
its information
is in
'Specifications' on the last page.
6. Do not hit or scratch the cabinet with a hard
object.
N
O-
Sg
7. To open or close the fallboard grasp the front
lip with both hands and slide gentiy.
Never
pull directly upwards.
Do not place anything
3. Always shut off the power after playing.
heavy on the fallboard.
4. Clean keys, etc, with a damp cloth only.
Never use solvents such as gasoline; they will
damage the finish.