Yamaha EL-100 Owner's Manual - Page 122
Troubleshooting
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Troubleshooting 11 Problem GENERAL OPERATION 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 occurs. This is caused by the proximity of a high-power broadcasting station, an amateur ham radio setup or a mobile phone. Electone generates some noise. 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. Radio or TV generates some noise. Locating a radio or TV close to the Electone causes to produce a noise from it. Relocate it farther from the Electone. The sound of the Electone causes surrounding objects to resonate. Some of the lamps in the DISPLAY SELECT section do not light. The sound is too small even when the volume is set to its maximum. 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 lamp of TREMOLO (FAST) button is lit when turned on. The others momentarily flash when the function is selected. ● 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. 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, turn the power off and turn it back to on. Pressing a certain panel button doesn't open its related LCD display. VOICES/RHYTHMS When the Pattern Disk is inserted in the M.D.R., the LCD will not change even if you press any buttons. Eject the Disk and press the desired button again. Switching voices causes the volume to change, despite their having identical volume setting. 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 pitch seems to be higher on the Pedalboard and lower on the Upper and Lower keyboards. You may feel it especially when playing piano voice. The temperament for the acoustic piano is tuned by listening to the overtones since the overtone configuration of the acoustic piano 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. Some voices seems to contain crack or distorted noise. 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. 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. Total polyphonic capacity (notes sounding for both Upper and Lower Keyboards) is 10 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. Appendix 122
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