Yamaha PSR-620 Owner's Manual - Page 92

Appendix: Troubleshooting Something not working as it should? In many cases what appears to be a malfunction can be traced to a simple error that can be remedied immediately. Before assuming that your PSR-620 is faulty, please check the following points. PROBLEM The speakers produce a "pop" sound whenever the power is turned ON or OFF. No sound when the keyboard is played. Not all simultaneously-played notes sound. Auto accompaniment won't function properly. No lower keyboard sound. The selected voice does not sound when the keyboard is played. Rhythm doesn't sound when started. Operation of the sustain pedal is reversed. The desired parameter cannot be edited. Accompaniment does not play properly. The Harmony/Echo and/or Dual Voice function will not turn ON. POSSIBLE CAUSE/SOLUTION This is normal and is no cause for alarm. Turn the power OFF and turn the power ON again. The default setting "Local ON" is automatically selected. The Local Control function could be turned OFF. Make sure Local Control is turned ON (page 84). You are probably exceeding the maximum polyphony of the PSR-620. The PSR620 can play up to 32 notes at the same time - including split, dual, auto-accompaniment, song memory, and multi pad notes. Notes exceeding this limit will not sound. Auto accompaniment won't sound right if you're using SINGLE FINGER type fingering when the SINGLE FINGER mode is not selected (page 31). Are you sure you're playing in the Auto-Accompaniment section of the keyboard? Are you playing chords that the PSR-620 can recognize (see chord types on page 32)? Make sure that the Keyboard Volume, Split Voice Volume, and/or Dual Voice Volume parameters are set at an appropriate level (pages 77, 15, and 18). Turn the power OFF and turn the power ON again. The appropriate default volume setting for the voice is automatically selected. Some sections of some styles do not use the accompaniment rhythm track. Sustain pedal operation will be reversed if you turn ON the power or plug in the pedal while pressing the pedal. For normal operation turn OFF the power then turn it back ON while the pedal is not pressed. The cursor is not located at the parameter to be edited. Make sure that the cursor is located at the parameter to be edited (the parameter should be flashing). Make sure that the accompaniment tracks you want to hear are not muted (page 39), and that the Accomp Volume parameter is turned up to a reasonable level (page 79). Turn the power OFF and turn the power ON again. The appropriate default track setting for the style and the default accompaniment volume is automatically selected. Neither of these functions can be turned ON if a percussion kit voice is selected. Make sure a voice between number 01 and 141 is selected. The Harmony/Echo effect cannot be turned ON when the FINGERED FULL mode is in use. Select another fingering mode (page 31). 90