Troubleshooting - Johannus One User Manual

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Troubleshooting

19
Symptom
Power turns automatically off.
The instrument does not turn on.
No sound from the ONE.
The volume level of the instrument is too low when
it is connected to an amplifier.
Insufficient volume from a device connected to the
ONE's INPUT jack.
The keyboard volume is lower than the Song
playback volume.
The pitch of the instrument is incorrect.
A "buzz" is heard from the external amplifier.
Unable to read from/write to USB Memory.
Can't save to USB Memory.
Audio recording won't start or stops unexpectedly.
The songs won't play.
This "johannus-one-xx" model name does not
appear in the Bluetooth device list of your mobile
device.
The music data played back by the mobile device
cannot be heard through the ONE.
46
Action
This is normal and due to the Auto Power Off function. If necessary, set the parameter of the Auto
Power Off function.
If you don't need the power to turn off automatically, turn the "AUTO OFF" setting "Disable".
Is the AC adaptor/power cord correctly connected to an AC outlet and to the ONE?
Could you have turned the power on again immediately after turning the power off?
Allow an interval of at least five seconds before turning the power on again.
Did you switch the ONE on?
Could the [VOLUME] knob be turned down? Select a higher setting.
Did you selected a sound (organ or orchestral)?
Are you using a connection cable that contains a resistor?
Use a connection cable that doesn't contain a resistor.
Could you be using a connection cable that contains a built-in resistor? Use a connection cable that
does not contain a resistor.
Could the AUDIO IN Level be down? Select a higher setting.
The volume level for the keyboard performance is set too low. Adjust the volume balance to increase
the keyboard volume via the Song Control Menu.
Is the "Tuning" or "Temperament" setting appropriate? Check the parameters.
Did you transpose the instrument?
Is the external amplifier or other device used with the ONE connected to a different AC power outlet?
Connect the amplifier or other device to the same AC outlet as the ONE.
The noise may be due to interference caused by the use of a mobile phone in close proximity to the
instrument.
Turn off the mobile phone, or use it further away from the instrument.
Check the format of your USB Memory. The ONE can use USB Memory that has been formatted as FAT.
If your USB Memory was formatted using any other method, please re-format it as MS-DOS FAT.
Could the USB Memory be write protected?
Is there sufficient free space on the USB Memory?
Is there sufficient free space on the USB Memory?
The file type of the song is not one of the file types that the ONE can play.
It may be that the song data is damaged.
The ONE need to be made to other devices.
Was the pairing function initiated between this unit and the mobile device?
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