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E-26
Technical Reference
Troubleshooting
Be sure to check the following table whenever you experience problems with keyboard operation.
CauseSymptom Action
No sound when keyboard keys
are pressed.
Any of the following symptoms
while using battery power.
Key light stays on.
RHYTHM button does not
work.
1. Power supply problem.
2. Volume setting is too low.
3. Headphones are plugged into
the keyboard.
4. The POWER/MODE selector is
in the CASIO CHORD or
FINGERED position.
5. Tone 99 PERCUSSION is
selected and you are pressing
keys that are not assigned tones.
Low battery power
Keyboard is waiting for play of
the correct note during Step 1
or Step 2 play.
Keyboard is in the Song Bank
Mode.
1. Correctly attach the AC
adaptor, make sure that
batteries (+/) are facing
correctly, and check to make
sure that batteries are not dead.
2. Use the VOLUME slider to
increase volume.
3. Unplug the headphones from
the PHONES/OUTPUT jack.
4. Normal play is not possible on
the accompaniment keyboard
while the POWER/MODE
selector is set to CASIO
CHORD or FINGERED.
Change the POWER/MODE
selector setting to NORMAL.
5. While 99 PERCUSSION is
selected, you can use only keys
that are marked on the console
with illustrations of percussion
instruments.
Replace the batteries with a set
of new ones or use the AC
adaptor.
1. Press the lit key to continue with
Step 1 or Step 2 play.
2. Press the START/STOP button
to quit Step 1 or Step 2 play.
Press the SONG BANK button
to return to the normal mode.
See Page
Page E-11
Page E-14
Page E-13
Page E-17
Page E-14
Page E-11
Pages
E-23, 24
Pages
E-23, 24
Page E-20
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
LK120_e_26-29.p65 10.3.19, 5:28 PM26
28


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