Reference; Troubleshooting - Casio AP-650M User Manual

Reference

Troubleshooting

Problem
No sound is produced when I
press a keyboard key.
The pitch of the Digital Piano
is off.
Tones and/or effects sound
strange. Turning power off
and then back on again does
not eliminate the problem.
Example: Note intensity does
not change even though I alter
key pressure.
I cannot transfer data after
connecting the Digital Piano
to a computer.
I cannot record chord
accompaniment data on my
computer.
I cannot store data to a USB
flash drive or load data from a
USB flash drive.
Playback stops part way
through while transferring
song data from my computer.
A tone's quality and volume
sounds slightly different
depending where it is played
on the keyboard.
When I press a button, the
note that is sounding cuts out
momentarily or there is a
slight change in how effects
are applied.
Cause
1. The VOLUME controller is set to
"MIN".
2. Headphones or an adaptor plug is
plugged into one of the PHONES
jacks.
1. The Digital Piano's key setting is
something other than "440.0 Hz".
2. Digital Piano tuning is incorrect.
3. A non-standard temperament
setting is being used.
4. Octave shift is enabled.
The "Setting Backup" feature is
turned on.
—
Accomp MIDI Out is turned off.
—
Digital noise from the USB cable or
power cord caused data
communication your computer and
Digital Piano to be interrupted.
This is an unavoidable result of the digital sampling process,
malfunction.
* Multiple digital samples are taken for the low range, middle range, and high range of the
original musical instrument. Because of this, there may be a very slight difference in tonal
quality and volume between sample ranges.
Performing a button operation while playing with the Duet Mode, Auto Accompaniment, the
recorder, or other functions can cause such phenomena when the Digital Piano switches
internal tone effects. It does not indicate malfunction.
Action
1. Rotate the VOLUME controller more
towards "MAX".
2. Disconnect whatever is connected to the
PHONES jack.
1. Change the key setting to "440.0 Hz", or
turn Digital Piano power off and then
back on again.
2. Adjust Digital Piano tuning, or turn the
Digital Piano off and then back on again.
3. Change the temperament setting to
"00:Equal", which is the standard modern
tuning.
4. Change the octave shift setting to 0.
Turn off "Setting Backup". Next, turn power
off and then back on again.
1. Check to make sure that the USB cable
is connected to the Digital Piano and
computer, and that the correct device is
selected with your computer's music
software.
2. Turn off the Digital Piano and then exit
the music software on your computer.
Next, turn the Digital Piano back on and
then restart the music software on your
computer.
Turn on Accomp MIDI Out.
See "Error Messages".
Stop song playback, disconnect the USB
cable from the Digital Piano, and then
reconnect it. Next, try playing back the song
again.
If this does not solve the problem, quit the
MIDI software you are using, disconnect the
USB cable from the Digital Piano, and then
reconnect it. Next, restart the MIDI software
and then try playing back the song again.
*
and does not indicate
See
Page
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