Troubleshooting - Roland Groovebox MC-307 Reference Manual

Troubleshooting

If there is no sound, or if the instrument does not function as
you expect, first check the following points. If this does not
resolve the problem, contact your dealer or the nearest
Roland Service Center.
* Roland shall bear no responsibility whatsoever with regard to
any loss of memory contents, or any consequent damages,
whether direct or indirect.
No Sound
The power of the MC-307 or connected devices is not
turned on.
- Turn on the power.
- Confirm that the AC adaptor is connected correctly.
The volume of the MC-307 or connected device is turned
down.
- Raise the volume (P. 10).
MIDI cables and/or audio cables are not connected
correctly.
- Make the correct connections (Quick Start; p. 2).
The Part Level of the corresponding part is lowered.
- Raise the Part Level (P. 22).
All tones of the patch are turned off.
- Turn each tone on (P. 88).
The patch parameter settings are not appropriate.
- Raise the Sustain Level (Level3) of AENV (P. 97).
- Raise the Cutoff Frequency of FILTER (P. 92).
- Raise the Tone Level of AMP-LEVEL (P. 95).
- Raise the Rate of LFO 1/2 (P. 98).
The pitch of the patch has exceeded the range in which it
can be sounded normally.
- Use Octave Shift to lower (raise) the range being played
(P. 24).
The Local Tx Switch of the corresponding part is set to
"EXT."
- Set it to "INT" or "BOTH" (P. 126).
The MIDI Rx Switch of the corresponding part is set to
"OFF."
- Turn it "ON" (P. 125).
The receive channel setting of the corresponding part
does not match the MIDI channel of the messages that
are being transmitted from the external MIDI device.
- Set the MIDI channel of the messages being transmitted
to match the receive channel of each part.
140
The Sequencer Output Assign setting of the
corresponding part is set to "EXT."
- Set it to "INT" or "BOTH" (P. 23).
The Pad Velocity setting is too low.
- Raise the Pad Velocity setting (P. 117).
The Bank Select and Program Change messages
transmitted from an external device have the wrong
values.
- Transmit the correct Bank Select and Program Change
messages (P. 72).
Notes Drop Out
You are attempting to play too many notes at once.
(The maximum number of simultaneous notes is 64.)
- Reduce the number of notes that are played
simultaneously.
- Reduce the number of notes in the pattern being played.
- Increase the Voice Reserve setting for parts that must
not drop out (P. 115).
The sound continues even
after you release your
fingers from keyboard pads
The [HOLD] button indicator is lit.
- Press the [HOLD] button to make the indicator go dark.
Some sounds continue for
unnaturally long durations
A Hold Off message was deleted by pattern editing etc.
- Use the Microscope page to insert a Hold Off (CC#64
Value=0) message (P. 72).
The DELAY TIME, DELAY FB, or ENV TIME4 (Release)
parameters are set excessively high.
- Decrease the values of these parameters.
Pattern (Song) Does Not Play
(Pattern Playback, RPS Playback, etc.)
The Sync Mode is set to "SLAVE."
- Set the Sync Mode to "INT" (P. 119).
If nothing happens if you press [STOP] button when the
[PLAY] button indicator is lit, turn the power off and on
again, and set Sync Mode to "INT."