Yamaha FX770 - Manual (Page 76)

Troubleshooting
If you are having some difficulty operating the FX 770, see if any of the symptoms listed below apply to your problem, then follow
the recommended remedy.
Symptom Causes Remedy Page
No sound, regardless
of the volume setting
on the unit
MIDI data sent from a connected
MIDI device has set the volume to
the minimum.
Send MiDI data to raise the volume from the
connected MIDI device. Or, remove the MIDI
cable connected to the MIDI IN port of the unit.
Page 34
One of the effect parameters
related to the volume has been set
to the minimum.
Correct the parameter value. Pages 37 ~ 63
Noise gate is set too high. Change the value to an appropriate value. Page 16
No effect BYPASS is effective.
(The indicator is on.)
Press the [BYPASS] key to cancel the BYPASS
function.
The effect parameter value is
inappropriate.
Correct the parameter value. Pages 37 ~ 63
“NO DATA” shown on
the LCD when you
recall a Program
The unit recieved inappropriate
Program data via MIDi.
Send the correct Program data, modify the
Program, or copy a correct Program.
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