Yamaha MU100R MU100R Owners Manual - Page 189

Troubleshooting Troubleshooting Even though the MU100R is exceptionally easy to use, it may occasionally not function as you expect it to. If that happens, check the possible problems and solutions below before assuming that the instrument is faulty. Problem No power. No sound. No sound when playing the MU100R from a computer, sequencer or external keyboard. Notes are cut off or omitted. Reverb, Chorus and/or Variation effects cannot be heard. The A/D input sound (mic, guitar, etc.) cannot be heard. VL Voice Section/ The VL Voices and/ Harmony Effect or Harmony effect cannot be used. Other notes on VL Voices and Harmony effect: Possible Cause and Solution If you are using an AC adaptor, check that the adaptor is properly plugged into both the AC outlet and the MU100R (See page 3.) Check that: q The panel volume control is set to an appropriate level. q Other volume-related parameters are set to appropriate levels. (See Volume and Ex- pression in the Single Part controls, page 96, and Master Volume and Master Attenuator in the All Part controls, page 98.) q Mute or Solo are not active. (See page 85.) If a Part is being muted, or an empty Part is being soloed, you may not get any sound. q The Variation effect settings are appropriate. No sound will be output at all if Variation Connection is set to INS (page 145), Variation Send is turned on for the Part (page 97), and NO EFFECT is selected for the Variation Type (page 144). The easiest solution in such a case is to turn off Variation Send for the Part. q The EG Attack Time (page 103) is appropriately short, for short percussive sounds. q The Velocity Sensitivity Offset (page 111) is appropriate. q The Note Limit Low and Note Limit High (pages 110, 136) settings are appropriate. If the former is set higher than the latter, no sound will be output. q The Velocity Limit Low and Velocity Limit High (pages 111, 136) settings are appropriate. If the former is set too high and the latter too low, no sound may be output. Check all MIDI connections, making sure that the MIDI OUT of the external device is connected to the MIDI IN of the MU100R, and that the MIDI IN of the external device is connected to the MIDI OUT of the MU100R. (See pages 17 - 19.) Or, if you are using the TO HOST terminal with a computer, make sure that the terminal is properly connected to the computer and that the HOST SELECT switch is properly set for your particular computer. (See pages 19 - 22.) Also, make sure that you have turned on the connected MIDI instrument or computer before turning on the MU100R. If you haven't, simply turning the MU100R off and back on again may solve the problem. The maximum polyphony of the MU100R may be exceeded. The MU100R can play no more than 64 notes at once. (Though 64 notes may seem to be more than enough, you may run short when playing a connected keyboard along with some densely arranged song data.) Check all Reverb-, Chorus- and Variation-related controls: Reverb Send, Chorus Send and Variation Send in Single Part controls (page 97); Reverb Return, Chorus Return and Variation Return (when Variation Connection is set to SYS) in All Part controls (pages 98 - 99). Also check the individual effect settings; if no Type has been selected, or if the parameter settings are too low, there may be no effect sound. Make sure that the appropriate A/D Part (A1 or A2) has been turned on and that the A/D INPUT control is set to an appropriate level. Also for best results, make sure that the A/D input type (Mic, Guitar, Keyboard, Audio) is set to match the input you are using. Check the following points: q The VL Voices and Harmony effect can only be used in the XG or Performance modes. q The VL Voice must be assigned to a Part in the Part Assign parameter (page 169), and the Harmony effect must be assigned to a Part in the Insert Part parameter (page 151). q The VL Voices can only be used with Parts 1 - 16. q When using MIDI, the VL Voices and Harmony effect can only be controlled via the MIDI-A terminal. When using TO HOST, they can only be controlled via MIDI port 1. q The VL Voices and Harmony effect can be used in the Performance mode; however, the Store operation saves only edits made from the panel controls, and not any of the "hidden" parameters accessible via MIDI. q When controlling certain VL Voice and Harmony effect parameters via MIDI, the value or setting displayed in the LCD may not change, even though the actual value does. q Any edits made to the "hidden" VL Voices/Harmony effect parameters (accessible only via MIDI) are not saved; turning off the power automatically cancels these settings. q When backing up VL Voice and Harmony effect data via MIDI, the time it takes for the data transfer may be quite long. Be careful not to turn off the power or disconnect the AC adaptor until the operation is completed. 178 Appendix