Casio LK-73 - Manual (Page 9)

Troubleshooting
E-59
Troubleshooting
Problem Possible Cause Action See Page
No keyboard Sound 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.
1. Correctly attach the AC adaptor,
make sure that batteries (+/–) 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.
Pages E-13,
E-14
Page E-18
Page E-18
Page E-22
Page E-54
Page E-57
Any of the following symptoms
while using battery power.
Š Dim power indicator
Š Instrument does not turn on
Š Display that is flickering, dim, or
difficult to read
Š Abnormally low speaker/
headphone volume
Š Distortion of sound output
Š Occasional interruption of sound
when playing at high volume
Š Sudden power failure when
playing at high volume
Š Flickering or dimming of the
display when playing at high
volume
Š Continued sound output even
after you release a key
Š A tone that is totally different from
the one that is selected
Š Abnormal rhythm pattern and
Song Bank play
Š Dimming of keyboard lights when
notes sound
Š Loss of power, sound distortion,
or low volume when playing from
a connected computer or MIDI
device
Low battery power Replace the batteries with a set of
new ones or use the AC adaptor. Pages E-13,
E-14
Auto Accompaniment does not
sound. Accompaniment volume is set to 000. Use the ACCOMP VOLUME button
to increase the volume.
Page E-27
Sound output does not change when
key pressure is varied. Touch response is turned off. Press the TOUCH RESPONSE
button to turn it on. Page E-49
641A-E-061A