Casio CELVIANO GP-400 User Manual page 72

Problem
When I press a button, the
note that is sounding cuts
out momentarily or there is
a slight change in how
effects are applied.
The play-along part (the
part played on the Digital
Piano) is slightly audible
during Play Mode playback.
Cause
This happens when the sounds of multiple parts are sounding at the same time while using
layer, using the Duet Mode, playing back a built-in tune, recording, etc. Pressing a button when
one of these conditions exists will cause the effect setting that is built into the tone to change
automatically, which causes notes to cut out momentarily or causes a slight change in how
effects are being applied.
Certain recording conditions may cause the play-along part to be slightly audible during Play
Mode playback. This does not indicate malfunction.
Troubleshooting
Action
See
Page
EN-71