Roland VGA-3 业主指南
29
Additional Data
Troubleshooting
This section explains some things that might go wrong when using the VGA-3, and what needs to be done to correct the
problem.If you think there may be something wrong with your VGA-3, please check through the following first. If these
suggestions don't fix the problem, then go ahead and contact the store you bought it from, or your nearest Roland Service Station.
problem.If you think there may be something wrong with your VGA-3, please check through the following first. If these
suggestions don't fix the problem, then go ahead and contact the store you bought it from, or your nearest Roland Service Station.
Trouble with the Sound
Odd Sound / No Sound When Guitar Is Played
●
Is the value for the [MASTER], [GAIN], or [VOLUME]
knobs, or for the [GAIN] or [VOLUME] settings stored
in the memory set to “0”?
knobs, or for the [GAIN] or [VOLUME] settings stored
in the memory set to “0”?
➔
Raise the volume to a suitable level.
●
Are the [BASS], [MIDDLE], or [TREBLE] knobs set to
“0”?
“0”?
➔
Depending on the model selected with the Amp Type (p.
17), no sound may be produced when [BASS],
[MIDDLE], and [TREBLE] are all set to “0.”
17), no sound may be produced when [BASS],
[MIDDLE], and [TREBLE] are all set to “0.”
●
Are you using an expression pedal?
➔
There may be no sound produced when the pedal
portion is set to the released position. Try operating the
pedal.
portion is set to the released position. Try operating the
pedal.
●
If controlling the volume with MIDI, was the MIDI
connection disrupted while the volume was set to “0”?
connection disrupted while the volume was set to “0”?
➔
Reconnect the MIDI device and raise the volume, or turn
the VGA-3’s power off and then on again.
the VGA-3’s power off and then on again.
●
Is TUNER set to ON?
➔
Turn TUNER off, or set the volume to be used for the
TUNER function (p. 24).
TUNER function (p. 24).
●
Is the unit in SYSTEM SETUP mode?
➔
Exit SYSTEM SETUP mode. Depending on the SYSTEM
SETUP parameters, sounds may not be output.
SETUP parameters, sounds may not be output.
●
Is there anything plugged into the RECORDING OUT/
PHONES jack?
PHONES jack?
➔
Disconnect the plug. No sound is output from the built-
in speaker when anything is plugged into the
RECORDING OUT/PHONES jack.
in speaker when anything is plugged into the
RECORDING OUT/PHONES jack.
The COSM GUITAR sound isn’t right
●
Is the GK pickup setting correctly?
➔
Internal Effects Not Being Applied
●
Is a foot switch connected?
➔
If the effect has been turned off with the foot switch, you
can turn the effect on by returning the knob to the “0”
position.
can turn the effect on by returning the knob to the “0”
position.
Wah Sound Not Produced
➔
An expression pedal (the optional EV-5) is required to
alter the filter used for the wah effect.
alter the filter used for the wah effect.
Interruptions in the Sound
●
Is the noise suppressor effect set near “10” (higher
threshold)?
threshold)?
➔
The volume level of the instrument connected
to EXT IN is too low
to EXT IN is too low
●
Could you be using a connection cable that contains a
resistor?
resistor?
➔
Use a connection cable that does not contain a resistor.
Other Problems
VGA-3 Receives Commands from Foot Controller or
Other Device, But Memories Do Not Switch
Other Device, But Memories Do Not Switch
●
Is the external device transmitting over a MIDI channel
that cannot be received by the VGA-3?
that cannot be received by the VGA-3?
➔
Set the MIDI channel on the external device to Channel
1. Otherwise, set MIDI OMNI MODE in the VGA-3’s
MIDI settings to ON (p. 26).
1. Otherwise, set MIDI OMNI MODE in the VGA-3’s
MIDI settings to ON (p. 26).
Tuner Meter Indicator Flashes With MIDI
Device In Use
Device In Use
●
Could the external MIDI device have transmitted a
large volume of data all at once?
large volume of data all at once?
➔
After the indicator flashes for a short while, the VGA-3
automatically returns to the condition it was in before
receiving the data. Reduce the amount of data that will
be transmitted by the external device, then have it send
the data again.
automatically returns to the condition it was in before
receiving the data. Reduce the amount of data that will
be transmitted by the external device, then have it send
the data again.