English
E-31
Troubleshooting
Problem Possible Cause Action See
No keyboard Sound 1.Power supply problem. 1.Correctly attach the AC
adaptor, make sure that
batteries poles (+/–) are
facing correctly, and check
to make sure that batteries
are not dead.
Pages
E-13, 14
2.Power is not turned on. 2.Set the POWER/MODE
switch to the NORMAL
position.
Page E-16
3.Volume setting is too low. 3.Use the MAIN VOLUME
buttons to increase volume.
Page E-16
4.The POWER/MODE switch
is in the CASIO CHORD or
FINGERED position.
4.Normal play is not possible
on the accompaniment
keyboard while the POWER/
MODE switch is set to
CASIO CHORD or
FINGERED. Change the
POWER/MODE switch
setting to NORMAL.
Page E-16
Any of the following symptoms
while using battery power.
• Instrument does not turn on
• Display that is flickering,
dim, or difficult to read
• Abnormally low speaker/
headphone volume
• Distortion of sound output
• Occasional interruption of
sound when playing at high
volume
• Sudden power failure when
playing at high volume
• Flickering or dimming of the
display when playing at high
volume
• Continued sound output
even after you release a key
• A tone that is totally different
from the one that is selected
• Abnormal rhythm pattern
and Song Bank play
Low battery power Replace the batteries with a
set of new ones or use the AC
adaptor.
Pages
E-13, 14
Auto Accompaniment does not
sound.
Auto accompaniment volume
is set to 0.
Use the ACCOMP VOLUME
button to increase the volume.
Page E-23
CTK240_e.book 31 ページ 2010年2月1日 月曜日 午前11時55分