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E-59
No keyboard sound
Any of the following symptoms
while using battery power.
• Dim power supply indicator
• Instrument does not turn on
• Dim, difficult to read display
• Abnormally low speaker/
headphone volume
• Distortion of sound output
• Occasional interruption of
sound when playing at high
volumes
• Sudden power failure when
playing at high volumes
• Dimming of the display when
playing at high volume
• Continued sound output even
after you release a key
• A totally different tone may
sound
• Abnormal rhythm pattern and
demo tune play
• Abnormally low microphone
volume
• Distortion of microphone input
• Dim power supply indicator
when a microphone is used
• Sudden power failure when
using the microphone
• Dimming of keyboard lights
when notes sound
• Loss of power, sound distortion,
or low volume when playing
from a connected computer or
MIDI device
Auto Accompaniment does not
sound.
Sound output does not change
when key pressure is varied.
Problem Possible Cause See pageAction
1. Power supply problem.
2. Power is not turned on.
3. Volume setting is too low.
4. The MODE switch is in the
CASIO CHORD or FINGERED
position.
5. LOCAL CONTROL is off.
6. MIDI data has changed the
VOLUME and EXPRESSION
settings to 0.
Low battery power
Accompaniment volume is set to
000.
Touch response is turned off.
Pages
E-14,15
Page E-19
Page E-19
Page E-35
Page E-54
Page E-57
Pages
E-14, 15
Page E-49
Page E-48
Troubleshooting
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. Press the POWER button to turn
on power.
3. Use the VOLUME slider to
increase volume.
4. Normal play is not possible on
the accompaniment keyboard
while the MODE switch is set to
CASIO CHORD or FINGERED.
Change the MODE switch
setting to NORMAL.
5. Turn on LOCAL CONTROL.
6. Adjust both parameters.
Replace the batteries with a set of
new ones or use the AC adaptor.
Use the SETTING button to
increase the volume.
Press the SETTING button to turn
it on.
642A-E-061A
LK55_e_59-63.p65 03.10.7, 5:30 PM59