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E-34
625A-E-036B
See page
Pages E-13, 14
Page E-16
Page E-16
Page E-16
Pages E-13, 14
Page E-21
Pages E-29, 30
Action
1. Correctly attach the AC adaptor,
make sure that batteries poles (+/
) are facing correctly, and check to
make sure that batteries are not
dead.
2. Set the POWER/MODE switch to
the NORMAL position.
3. Use the MAIN VOLUME buttons to
increase volume.
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.
Replace the batteries with a set of new
ones or use the AC adaptor.
Use the ACCOMP VOLUME button to
increase the volume.
Change the transpose or tuning pa-
rameter value to 0 or 00.
Problem
No keyboard Sound
Any of the following symptoms
while using battery power.
Dim power indicator
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
Loss of power, sound distor-
tion, or low volume when
playing from a connected
computer or MIDI device
<CTK-491 only>
Distortion of microphone in-
put
Dim power supply indicator
when a microphone is used
Sudden power failure when
using the microphone
Auto Accompaniment does not
sound.
The key or tuning does not
match when playing along with
another instrument.
Possible Cause
1. Power supply problem.
2. Power is not turned on.
3. Volume setting is too low.
4. The POWER/MODE switch is in
the CASIO CHORD or FINGERED
position.
Low battery power
Auto accompaniment volume is set to
0.
The tuning or transpose parameter is
set to a value other than 0 or 00.
Troubleshooting
CTK481_E34_37.p65 03.10.7, 2:58 PMPage 34 Adobe PageMaker 6.5J/PPC
36


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