Yamaha ELS-02 Owner's Manual - Page 196

14 Appendix Troubleshooting Problem Possible Cause and Solution GENERAL OPERATION A click or pop is heard when the power is turned on or off. Electrical current is being applied to the instrument. This is normal. The sound is not heard for about 10 seconds This is normal; the Electone takes a while to start up. after turning the power on. A cracking noise is sometimes heard. Noise may be produced when either an electrical appliance is turned on 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, an amateur occurs. ham radio setup or a mobile phone. 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. In the LCD display, there are some black points (unlit) or white points (always lit). Unfortunately, this is a common characteristic of TFT-LCDs. Some buttons on the panel do not respond. The UPPER/LOWER ORGAN FLUTES and LEAD VOICE 2 buttons are invalid on the ELS-02. If you upgrade the ELS-02 to the ELS-02C, these buttons can be used. Some of the LEDs in the DISPLAY SELECT section do not light. The LEDs of on/off buttons (UPPER/LOWER ORGAN FLUTES, VOICE EDIT, RHYTHM PROGRAM, and ROTARY SP SPEED) are lit when those functions are turned on. The LEDs of other function's buttons momentarily light when the functions are selected. The sound is too small even when the volume is set to its maximum. • 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 POWER switch of the speaker may have been turned off. Turn it on. • (For the ELS-02C) The REAR SPEAKER switch may have been set to OFF. Switch it to ON. 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 Factory Set operation to reset the Electone (page 23). VOICES/RHYTHMS The pitch may sound excessively high on This may occur when you compare the Electone's sounds with that of a piano. the Pedalboard and low in the higher Because of the difference of the harmonics structure, the tuning system of the registers of the Lower and Upper keyboards. Electone is different from the piano in the higher and lower ranges. Some of the Voices may contain cracking and/or noisy sounds. You may find these mainly in the wind instrument Voices. These are purposely added effects to the Voices to reproduce the characteristics of the wind instruments such as the pipe vibrations, breath noises and squeaks. When too many keys are pressed, not all of the notes sound. Total polyphonic capacity (notes sounding for both Upper and Lower Keyboards) is 14 notes. When you turn the Pedal Polyphonic mode to on, the total is 14 for all keyboards, Upper, Lower and Pedalboard. When sustain length is set to HOLD, previously played notes are cut off. Since the HOLD setting causes notes to keep sounding, the cumulative notes (elements) may go over the maximum elements that the Electone can sound. When this occurs, previously played notes are cut off. 196 ELS-02/ELS-02C Owner's Manual