Yamaha EZ150 Owner's Manual - Page 62

Troubleshooting Problem When the EZ-150 is turned on or off, a popping sound is temporarily produced. When using a mobile phone, noise is produced. The sound of the voices or rhythms seems unusual or strange. There is no sound even when the keyboard is played or when a Song is being played back. When playing back one of the Pianist styles (#81 - #00), the rhythm cannot be heard. The auto accompaniment doesn't turn on, even when pressing the [ACCOMPANIMENT ON/OFF] button. Not all notes are heard when playing a number of notes simultaneously. Playing keys in the right hand section of the keyboard does not produce any sound. The accompaniment does not sound properly. The Multi Pad sound is cut off or sounds unusual. The sound of the voice changes from note to note. The Light Guide does not match the keys actually played. Possible Cause and Solution This is normal and indicates that the EZ-150 is receiving electrical power. Using a mobile phone in close proximity to the EZ-150 may produce interference. To prevent this, turn off the mobile phone or use it further away from the EZ-150. The battery power is too low. Replace the batteries. (See page 10.) Check that nothing is connected to the PHONES/OUTPUT jack on the rear panel. When a set of headphones is plugged into this jack, no sound is output. Check that Light Guide is turned on in the Lesson mode. This is normal. The Pianist styles have no drums or bass - only piano accompaniment. The accompaniment of the style can only be heard when accompaniment is set to ON and keys are played in the auto accompaniment area of the keyboard. Make sure the Style mode is active before using the auto accompaniment. Press the [STYLE] button to enable style operations. Too many keys are pressed at the same time. The EZ-150 is polyphonic up to a maximum of 16 notes. When using the Dictionary function (page 43), the keys in the right hand section are used only for entering the chord root and type. Make sure that the Accompaniment Volume (page 49) is set to an appropriate level. The EZ-150 is polyphonic up to a maximum of 16 notes. If a style or song is playing back at the same time a Multi Pad is played, some notes/ sounds of the Multi Pad may be omitted (or "stolen") from the accompaniment or song. The AWM tone generation method uses multiple recordings (samples) of an instrument across the range of the keyboard; thus, the actual sound of the voice may be slightly different from note to note. When auto accompaniment is on, the Light Guide shows the specific notes of the chords you play in the auto accompaniment area of the keyboard. If you play a single finger chord, or an inversion of a chord, the corresponding chord will be appropriately shown - even if the lighting keys do not exactly match the pressed keys. 62