Troubleshooting - Yamaha Electone EL-200 Owner's Manual

Troubleshooting

Problem
GENERAL OPERATION
A cracking noise is sometimes heard.
Interference from radio, TV, or other sources occurs. This is caused by the proximity of a high-power broadcasting station, an
Electone causes some noise.
Radio/ or TV generates some noise.
The sound of the Electone causes surrounding
objects to resonate.
The sound is too small even when the volume is
set to its maximum.
The Electone panel does not function normally or
the content of the memorized data has changed.
VOICES/RHYTHMS
The pitch seems to be higher on the Pedalboard and
lower on the Upper and Lower keyboards.
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Some voices seems to contain crack or distorted noise.
When too many keys are pressed, not all of
the notes sound.
Only a note will be produced when pressing two
keys or more on the Pedalboard and/or Lead voice.
Sound is produced even when the volume is set to
off on the specific keyboard.
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Possible Cause and Solution
Noise may be produced when either an electrical appliance is turned on or off,
or an electric power tool (such as drill) is used in the proximity of the Electone.
If this occurs, plug the Electone into an electrical outlet located as far as
possible from the device that seems to be the source of the problem.
amateur ham radio setup or a mobile phone.
A cell phone may be used in the proximity of Electone. Using a cell phone
beside the Electone may cause a noise. Turn off the power of the cell phone.
Locating a radio/ or TV close to the Electone causes to produce a noise from it.
Relocate it farther from the Electone.
Because the Electone is capable of producing powerful bass sounds, resonance
may be caused in surrounding objects, such as cabinets or glass windows.
To avoid this, relocate the objects or lower the Electone's volume.
The Master Volume may be set around the minimum position. Turn it
clockwise.
The Expression Pedal may not be pressed down. Press it down with your
toe.
This happens very rarely. Occasionally, power surges and spikes due to
electrical storms or other reasons may cause the Electone to malfunction and/or
alter the contents of memorized data. In this case, turn off the power switch and
then turn the power back to on while holding down the PEDAL/2 button in the
Keyboard Percussion section (Power-On Reset).
You may feel it especially when playing piano voice. The temperament for the
acoustic piano is adjusted by listening to the overtones since the overtone
configuration of the piano voice is so complicated that the actual notes in the
higher and lower registers are difficult to be adjusted. On the contrary, the
Electone voices including piano voice are tuned by actual notes. Thus, the
tuning method itself in the higher and lower registers is different.
You may feel it mainly with wind instrument voices. These are purposely built
in effects, which can faithfully reproduce the characteristics of each instrument.
You can enjoy more realistic sounds such as brass vibration and breath noise.
Total polyphonic capacity (notes sounding for both Upper and Lower
Keyboards) is 12 notes. The notes exceeding this limit may not be produced.
The Lead and Pedal voices are designed to sound one note at a time. When you
simultaneously press two or more keys, only the highest note will sound.
The sound may not be adjustable when you play back the data created with an
upper model and not controllable with EL-200.