Roland JV-1010 Manuale Utente

Pagina di 96
52
Troubleshooting
If no sound is produced, or if operation otherwise seems 
wrong, first check the following points. If after trying the 
following remedies, the unit still does not operate correctly, 
please contact your Roland dealer or the nearest Roland 
Service Center.
is displayed on the screen during operation.
The power does not come on.
- Is the AC adaptor properly plugged onto the wall and the 
JV-1010?
No sound is produced.
- Is all other equipment, such as external amps and 
speakers, properly connected?
- Is the power to the JV-1010 and all connected external 
devices turned on?
- Is the JV-1010’s VOLUME knob turned to 
MIN
?
- Is the volume on any connected external devices turned 
down?
- Has the volume been lowered by volume/expression 
messages received from an external device?
- Have all connections been made properly?
When using the JV-1010 without a computer, please connect 
audio cables or headphones (p. 18).
If using the JV-1010 connected to a computer, use a computer 
cable or MIDI cable to make the connection to the computer 
(p. 38). Then connect audio cables or headphones (p. 18).
- Is the sound audible with headphones connected?
If sound can be heard through the headphones, then the 
cause may lie elsewhere, such as a short in an audio cable 
carrying the signal to another device, a bad connection, or a 
malfunction in a connected amp, mixer, or speakers.
- Is the specified Wave Expansion Board properly installed? 
WAVE-EXP
 patches and rhythm sets cannot be selected 
unless the Wave Expansion Board is installed in the 
designated slot.
- Is the COMPUTER switch on the JV-1010’s rear panel set 
to the correct position?
When using the JV-1010 while connected to a computer, set the 
switch to the position appropriate for the connection method, 
type of computer being used, and the driver settings (p. 38).
* Before changing the COMPUTER switch setting, first switch 
off the power to the JV-1010.
Songs are not played back correctly.
- Are you playing songs created for the GS format?
While the JV-1010 is compatible with the General MIDI 
System, GS Format is not supported, so such songs may not 
play back correctly.
- If playing back GM scores, is the sound generator in GM 
mode?
No sound is produced, even when 
playing back songs.
- Is the Rx Switch parameter set to OFF?
Set this to ON.
There is no sound for a specific part.
- Is the volume level for the part turned down?
Raise the volume for the part for which no sound is being 
produced with the 
Level
- Is reception of MIDI messages enabled?
Set the Rx Switch parameter to ON.
- Does the part’s MIDI receive channel match the MIDI 
transmit channel of the connected MIDI device?
Set the MIDI receive channel with the Channel parameter.
The sound is distorted.
- Is a distortion-type effect being applied to the sound?
If the sound for a specific patch or part is distorted, lower the 
volume level on that part (p. 44).
When the overall sound is distorted, lower the volume level 
with the VOLUME knob.
The pitch has shifted.
- Has the JV-1010’s tuning been shifted?
Check the 
Master Tune
- Have the 
Coarse Tune
 and 
Fine Tune
 settings for the 
specific parts been made?
Check the values for the 
Coarse Tune
 and 
Fine Tune
 
The JV-1010 does not output MIDI 
data.
- Is the COMPUTER switch on the JV-1010’s rear panel set 
correctly?
When outputting JV-1010 data through the COMPUTER 
connector, set the COMPUTER switch to 
PC-2
 or 
Mac
 
according to the computer and software being used (p. 38).
The JV-1010 does not output data from the COMPUTER 
connector when the COMPUTER switch is set to 
MIDI
. In this 
case, data is output from the MIDI OUT connector.
The sound is interrupted.
- Is the polyphony (maximum number of voices) being 
exceeded?
When more than 64 voices are used simultaneously, the 
voices exceeding this limit of 64 are interrupted.
Set a sufficiently high value as the Voice Reserve setting for 
parts you want to make sure are not interrupted (p. 44).