Casio CTK240ES1A - Manual (Page 33)

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
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