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Appendix
Troubleshooting
If the JUNO-DS does not function in the way you expect, first check the following points. If this does not resolve the problem, consult your dealer or a nearby Roland service
center.
Problem
Cause/Action
Make sure that the JUNO-DS's AC adaptor is correctly connected to an AC outlet and to the rear panel power connector, and that the adaptor itself and
AC power cord are connected correctly.
If you connect the AC adaptor and turn on the power when batteries are installed, the AC adaptor will be used preferentially. Even if batteries are installed, the
The power does not turn on
power will not turn on unless the AC adaptor is connected to an AC outlet.
If you're using batteries, disconnect the AC adaptor from the JUNO-DS. If batteries are installed, connecting or disconnecting the power cord from the outlet or
connecting or disconnecting the DC plug of the AC adaptor while the JUNO-DS is turned on will cause the power to turn off.
Is the power for connected amps and speakers turned on?
Could you have lowered the volume of your connected equipment?
Is the [MASTER VOLUME] knob turned all the way down?
Have connections been made correctly?
Can you hear sound through headphones?
If there is sound in the headphones, it is possible that the connection cables are broken, or that your amp/mixer has malfunctioned. Check your cables and amp/
mixer system once again.
If you do not hear sound when you play the keyboard, check whether the Local Switch is turned OFF.
Make sure that the Local Switch setting is turned on.
Could the level of the tone (patch) be too low?
Check the level setting.
There is no sound
Could the level setting be too low?
In the "SOUND" system settings, check the "Master Level" setting.
Could the keyboard switch be off?
Turn the keyboard switch on. For details, refer to "Parameter Guide (English)" (PDF).
Could a part be muted?
Turn mute off. For details, refer to "Parameter Guide (English)" (PDF).
Are the Effect settings correct?
Check the Effect settings ON or OFF.
Could the volume have been lowered by a MIDI message (volume message or expression message) received from the computer or by operating the pedal?
Could the patch's tones be turned off?
Turn the Tone Switch "ON. " For details, refer to "Parameter Guide (English)" (PDF).
Has the volume level of the part been lowered?
Check the level of each part.
A specific Part does not sound
Could the [LEVEL] sliders be lowered?
When I play the keyboard, notes do
Is the pedal polarity reversed?
not stop
In the "PEDAL" system settings, check the "Control Pedal Polarity" or "Hold Pedal Polarity" setting.
Check the MIC [LEVEL] knob of the rear panel and [MIC IN] LEVEL slider.
Could the Mic In level be 0?
Microphone sound is not output
In the "MIC IN SETTINGS" system settings, check the "Mic In Level" setting.
Could you be using a condenser microphone?
The JUNO-DS does not support condenser microphones.
Error Messages
If an incorrect operation is performed, or if processing could not be performed as you specified, an error message appears.
Refer to the explanation for the error message that appears, and take the appropriate action.
Message
Battery Low!
Incorrect File!
MIDI Buffer Full!
MIDI Offline!
No More Favorites!
Not Found!
Now Playing!
Now Recording!
Pattern Full!
Read Error!
Rec Overflow!
Sys Mem Damaged!
USB Mem NotReady!
Memory Full!
Write Error!
Meaning
The battery has run down.
This is a file that the JUNO-DS is unable to play/import.
An unusually large amount of MIDI data was received, and could not
be processed.
The MIDI IN connection was broken.
No more favorites have been registered.
The file was not found on the USB flash drive.
Since the JUNO-DS is playing, this operation cannot be executed.
Since the JUNO-DS is recording, this operation cannot be executed.
The maximum number of notes that can be recorded in one pattern
has been exceeded; the pattern cannot be recorded any further.
This indication may appear if a large amount of data, such as
movements of the Control knobs, is being recorded. No further
pattern recording is possible.
Failed to load data from USB flash drive.
It may be that the file is damaged.
This file cannot be loaded since its format is incorrect.
Since a large amount of recorded data was input all at once, it could
not be processed correctly.
It is possible that the contents of system memory have been
damaged.
USB flash drive is not connected.
Import is not possible because user memory is full.
Failed to write data to USB flash drive.
Data cannot be written because the USB flash drive has no more free
space.
The file or the USB flash drive itself is write protected.
Action
Replace the batteries, or use an AC adaptor.
Do not use this file.
Reduce the amount of MIDI messages that are being transmitted.
Check that there is no problem with the MIDI cable connected to the JUNO-DS's MIDI IN,
and that the MIDI cable was not disconnected.
Check the currently selected favorite number and the direction ("FAV-UP" or "FAV-DOWN")
that's assigned to the pedal.
Make sure that the file exists on the USB flash drive.
Stop playback before you execute the operation.
Stop recording before you execute the operation.
Delete unneeded data from the pattern that you're recording.
Make sure that USB flash drive is correctly connected.
Do not use this file.
Reduce the amount of recorded data.
Please execute a Factory Reset.
If this does not resolve the problem, contact your dealer or a nearby Roland
service center.
Connect USB flash drive.
Delete unneeded samples (patches).
Make sure that USB flash drive is correctly connected.
Delete unneeded files from the USB flash drive. Alternatively, use a different USB flash
drive device, one that has more free space available.
Make sure that the file or the USB flash drive is not write protected.
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