Troubleshooting - Boss Poly Octave OC-20G Owner's Manual

Troubleshooting

The power doesn't come on.
Is the external device connected correctly to the OUTPUT jack?
Check the connections again.
* When running off batteries, the unit won't switch on unless there's something plugged
into the OUTPUT jack. This helps conserve the batteries.
Have the batteries run down?
Replace with fresh batteries (p. 2).
Is the specified AC adaptor (PSA-series sold separately) connected
correctly?
Check the connections again (p. 3, 4).
There is no sound/volume is too low.
Is the other equipment connected correctly?
Check the connections again (p. 3, 4).
Is the volume turned down on the connected guitar amp, effects
processor, or other device?
Check the settings on the connected equipment (p. 3, 4).
Is the GK-2A correctly installed and connected?
After reading the instructions in the GK-2A Owner's Manual, check the
installation once more. Also, confirm that the guitar and the GK-2A have
been connected properly, using the supplied cable.
Is the GK-2A's SYNTH VOL turned down?
Check to make sure the GK-2A's SYNTH VOL is not lowered.
Is the GK-2A's selection switch set to "MIX?"
When set to "GUITAR" or "SYNTH," the necessary signals may not be
input to the unit, which may prevent sounds from being produced.
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