Yamaha EL-27 Owner's Manual - Page 80

Troubleshooting

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Troubleshooting Please note that the appearance of any of following phenomena does not indicate a mechanical failure of the Electone. Problem Possible Cause and Solution A cracking noise is sometimes heard. 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. Interference from radio, TV, or other sources This is caused by the proximity of a high-power broadcasting station occurs. or amateur ham radio setup. The sound of the Electone causes surrounding objects to resonate. 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 Electone panel does not function normally or the content of the memorized data has changed. 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. If this happens, perform the Power On Reset operation to reset the Electone. (See page 49.) When too many keys are pressed, not all of Total polyphonic capacity (notes sounding for both Upper and the notes sound. Lower Keyboards) is 11 notes. The sound is too soft, despite the volume being set to the maximum. Check all of the volume controls, making sure that they are set to suitable levels: the panel Volume controls for each voice section, the Master Volume dial, and the Expression Pedal. Switching voices causes the volume to change, despite their having identical volume settings. The volume of certain voices may seem lower than that of others. Adjust the balance of the sound with the Volume control within the appropriate Voice Condition display. When keys on the Lower keyboard or Pedalboard are pressed, the sounds of percussion instruments are also heard. The Keyboard Percussion function has been turned on. When not using the function, be sure to turn it off. (See page 43.) Only one sound is heard when two notes of For practical performance reasons, the Electone has been the Lead or Pedal voices are simultaneously designed so that one note of the Lead or Pedal voices can be played. played at a time. If several keys are pressed at once, only the highest note will be sounded (high-note priority). 78

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78
Problem
A cracking noise is sometimes heard.
Interference from radio, TV, or other sources
occurs.
The sound of the Electone causes
surrounding objects to resonate.
The Electone panel does not function
normally or the content of the memorized
data has changed.
When too many keys are pressed, not all of
the notes sound.
The sound is too soft, despite the volume
being set to the maximum.
Switching voices causes the volume to
change, despite their having identical
volume settings.
When keys on the Lower keyboard or
Pedalboard are pressed, the sounds of
percussion instruments are also heard.
Only one sound is heard when two notes of
the Lead or Pedal voices are simultaneously
played.
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.
This is caused by the proximity of a high-power broadcasting station
or amateur ham radio setup.
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.
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. If this
happens, perform the Power On Reset operation to reset the
Electone. (See page 49.)
Total polyphonic capacity (notes sounding for both Upper and
Lower Keyboards) is 11 notes.
Check all of the volume controls, making sure that they are set to
suitable levels: the panel Volume controls for each voice section,
the Master Volume dial, and the Expression Pedal.
The volume of certain voices may seem lower than that of others.
Adjust the balance of the sound with the Volume control within the
appropriate Voice Condition display.
The Keyboard Percussion function has been turned on. When not
using the function, be sure to turn it off. (See page 43.)
For practical performance reasons, the Electone has been
designed so that one note of the Lead or Pedal voices can be
played at a time. If several keys are pressed at once, only the
highest note will be sounded (high-note priority).
Troubleshooting
Please note that the appearance of any of following phenomena does not indicate a mechanical
failure of the Electone.