Yamaha PSR-S550 Owner's Manual - Page 107

Appendix Troubleshooting Problem Possible Cause and Solution When the instrument is turned on or off, a popping This is normal and indicates that the instrument is receiving electrical sound is temporarily produced. 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 or when a song or style is being played back. 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 the Local Control on/off. (See page 94.) Is the FILE CONTROL display showing? The instrument's keyboard, etc., will not produce any sound while the FILE CONTROL display is showing. Press the [EXIT] button to return to the MAIN display. 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 94. Make sure that the Style Volume (page 81) is set to an appropriate level. The style does not sound properly. Is the split point set at an appropriate key for the chords you are playing? Set the split point at an appropriate key (page 59). Is the [ACMP] button lit? If it is not lit, press the [ACMP] button so it lights. No rhythm accompaniment plays when the [START/STOP] button is pressed after selecting the BaroqueAir Style in the MOVIE & SHOW category. This is not a malfunction. Style BaroqueAir Style does not have a Rhythm part, so there is no rhythm sound for this Style. Also, this Style does not have a Fill-In section. The other parts will begin playing when you play a chord in the accompaniment. 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. 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 Demo display is shown in Japanese, and/or there are Japanese characters in the display messages. Make sure the Language setting in the FUNCTION display is set to English. (See page 12) The ACMP indicator does not appear when the [ACMP] button is pressed. Always press desired style category button first when you are going to use any style-related function. There is no harmony sound. The harmony effects (01-26) behave differently according to their type. Types 01-05 function when style playback is on, chords are played in the accompaniment range of the keyboard, and a melody is played in the right-hand range. Types 06-26 will function whether style playback is on or off. For types 06-12 you need to play two notes at the same time. PSR-S550 Owner's Manual 107