Casio CTK240ES1A Electronic Keyboard User Manual


 
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