E-36
■Troubleshooting
Be sure to check the following table whenever you experience problems with key-
board operation.
1. Power supply problem.
2. Volume is set to 0.
3.Headphones are plugged
into the keyboard.
4.The POWER/MODE selec-
tor is in the CASIO CHORD
or FINGERED position.
5.Tone “99 PERCUSSION” is
selected and you are press-
ing keys that are not as-
signed tones.
•Low battery power
•No sound when keyboard
keys are pressed.
•Any of the following symp-
toms while using battery
power.
•Dim power supply indica-
tor
•Instrument does not turn on
•Dim, difficult to read dis-
play
•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 vol-
ume
•Abnormal rhythm pattern
and demo tune play
•Dimming of keyboard lights
when notes sound
1.Correctly attach the AC
adaptor, make sure that bat-
teries poles (+/–) are facing
correctly, and check to make
sure that batteries are not
dead.
2.Press the VOLUME but-
ton.
3.Unplug the headphones
from the PHONES/OUT-
PUT jack.
4.Normal play is not possible
on the accompaniment key-
board while the POWER/
MODE selector is set to
CASIO CHORD or FIN-
GERED. Change the
POWER/MODE selector
setting to NORMAL.
5.While “99 PERCUSSION” is
selected, you can use only
keys to the left of B4. These
keys are marked on the con-
sole with illustrations of per-
cussion instruments.
•Replace the batteries with a
set of new ones or use the
AC adaptor.
Technical Reference
CauseSymptom Action
475A-E-038A
LK35_E_36-39.p65 03.7.4, 11:41 AMPage 36 Adobe PageMaker 6.5J/PPC