Yamaha PSR-E423 Owner's Manual - Page 85

Troubleshooting Appendix Problem Possible Cause and Solution When the instrument is turned on or off, a popping sound is temporarily produced. This is normal and indicates that the instrument is receiving electrical power. When using a mobile phone, noise is produced. Using a mobile phone in close proximity to the instrument may produce interference. To prevent this, turn off the mobile phone or use it further away from the instrument. There is no sound even when the keyboard is played Check that nothing is connected to the PHONES/OUTPUT jack on the or when a song or style is being played back. rear panel. When a set of headphones is plugged into this jack, no sound is output. Check the Local Control on/off. (See page 74.) Playing keys in the right hand area of the keyboard does not produce any sound. When using the Dictionary function (page 65), the keys in the right hand area are used only for entering the chord root and type. The volume is too soft. The batteries are low or dead. Replace all six batteries with completely The sound quality is poor. new ones, or use the optional AC adaptor. The rhythm stops unexpectedly or will not play. The recorded data of the song, etc. does not play cor- rectly. The LCD display suddenly goes dark, and all panel settings are reset. The style or song does not play back when the [START/STOP] button is pressed. Is External Clock set to ON? Make sure External Clock is set to OFF; refer to "External Clock" on page 74. The style does not sound properly. Make sure that the Style Volume (page 62) is set to an appropriate level. Is the split point set at an appropriate key for the cords you are playing? Set the split point at an appropriate key (page 63). Is the "ACMP ON" indicator showing in the display? If it is not showing press the [ACMP ON/OFF] button so that it does show. No rhythm accompaniment plays when the [START/ STOP] button is pressed after selecting style number 150 or a style between 162 and 174 (Pianist). This is not a malfunction. Style number 150 and style numbers 162-174 (Pianist) have no rhythm parts, so no rhythm will play. The other parts will begin playing when you play a chord in the accompaniment range of the keyboard if style playback is turned on. Not all of the voices seem to sound, or the sound seems to be cut off. The instrument is polyphonic up to a maximum of 32 notes. If the Dual voice or Split voice is being used and a style or song is playing back at the same time, some notes/sounds may be omitted (or "stolen") from the accompaniment or song. Some notes don't sound when playing multiple notes simultaneously on the keyboard, or some notes don't sound when playing arpeggios. You have exceeded 32 simultaneous notes, which is the maximum polyphony (the maximum number of notes that can be played simultaneously) of the instrument. The instrument will play normally as long as no more than 32 notes are being played at once, both on the keyboard and by any automatic playback functions. The footswitch (for sustain) seems to produce the opposite effect. For example, pressing the footswitch cuts off the sound and releasing it sustains the sounds. The polarity of the footswitch is reversed. Make sure that the footswitch plug is properly connected to the SUSTAIN jack before turning on the power. The sound of the voice changes from note to note. This is normal. 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. The wrong notes sound when the keyboard is played. Perhaps the performance assistant technology is turned on. Press the [PERFORMANCE ASSISTANT] button to turn it off. The ACMP ON indicator does not appear when the Always press the [STYLE] button first when you are going to use any style- [ACMP ON/OFF] button is pressed. related function. Reference Appendix Owner's Manual 85