48
Appendix (continued)
Troubleshooting

If you can’t get a function to work properly, or your QR10 appears to be malfunctioning, please check the symptoms and

possible causes listed below before assuming that your QR10 is faulty.

Symptom Possible Cause/Cure
• No power. • Make sure that the AC adaptor is plugged in properly.
• If you’re not using an AC adaptor, make sure that a full set of fresh batteries is installed.
• Make sure that the batteries are installed facing the right way (i.e. correct polarity).
• No sound. • Check that the volume control is set to a reasonable level (page 11).
• Make sure that the individual track volume parameters are set to reasonable levels (page 21).
• Make sure that the tracks you want to play back are selected (page 16).
• No sound will be produced if you have selected a sampling voice that has not yet been recorded (page 19).
• No sound will be produced by the internal speaker if anything is plugged into the PHONES jack (page 4).
• The sound of an external source plugged into the INPUT jack will not be heard if the FOOT SW function is
turned ON (page 11).
• Distorted sound. • The batteries may be running low.
• If the sound of an external source plugged into the INPUT jack is distorted, the input level is probably too
high (page 5).
• The micro-keyboard produces the • Make sure that the TRANSPOSE parameter is set to “0” (page 21).
wrong pitch. • If you’re using the micro-keyboard to input chords, then you’ll hear the sound of a chord, not just the pitch of
the key pressed (page 14).
• Some notes aren’t played. • You may be exceeding the maximum polyphony of the QR10 (max. 28 notes).
• The [START/STOP] keys does not • Playback will not start if you have selected a user pattern or song that has not been recorded (pages 10, 23).
function. • The [START/STOP] key does not function if the MIDI SYNC mode is turned ON and no MIDI clock signal
is received via the MIDI IN connector (page 44).
• Time signature cannot be set. • You cannot change the time signature of a pattern that has already been recorded (page 38).
• Chords cannot be changed via the • You cannot change chords via the micro-keyboard in the SONG mode. In this mode chords can only be
micro-keyboard during song playback. changed via the [CHORD PROGRESS] button if the CHORD PROGRESS function is turned ON (page 33).
• The [PHRASE] keys produce no sound. • The phrase keys do not produce sound in the PATTERN mode (they function as CHORD SHIFT keys in this
mode — page 39).
• The footswitch does not function. • The FOOT SW function must be turned ON in order for the footswitch to work (page 11).
• ABC does not function. • Make sure that the ABC function is turned ON (page 44).
• Make sure that you are playing chords within the specified ABC range (page 45).
• Bulk data not received. • Bulk data can only be received when the initial SONG or PATTERN play mode display is showing and
playback is stopped.
Error Messages

The following error messages will appear on the QR10 display to warn you of operation errors and other problems.

E;:01 Preset data! You have attempted to edit a preset parameter that can not be changed.
E;:0@ Illegal input! You have attempted to enter a value that is outside the range of the selected parameter or is not recognized by the QR10.
E;:0# Memory full! This message will appear if the QR10 memory becomes full. Use the pattern or song clear function to make room for further
recording.
E;:0$ Low batteries! The dry batteries powering the QR10 are exhausted and must be replaced.
E;:0% MIDI buffer full! The MIDI input buffer is full and can handle no more data. Reduce the amount or complexity of the MIDI data being sent
to the QR10.
E;:0^ Bulk receive failed! Bulk data could not be properly received by the QR10.
E;:0& Unrecognizable bulk data! Bulk data has been received but is not recognizable by the QR10.
E;:0* Bulk receive interrupted! Bulk data being received was interrupted before the reception was complete.
E;:0( Backup battery low! The internal memory backup battery is too low to retain the data in memory and must be replaced. Have the backup
battery replaced by qualified Yamaha service personnel!.