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E-62
Troubleshooting
No keyboard sound
Any of the following symptoms
while using battery power.
Auto Accompaniment does not
sound.
Sound output does not change
when key pressure is varied.
Key light stays on.
Keys are lit though no sound is
being produced.
Cannot record Auto
Accompaniment or rhythm.
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.
Low battery power
Accompaniment volume is set to
000.
Touch response is turned off.
Keyboard is waiting for play of
the correct note during Step 1 or
Step 2 play.
Power on alert is reminding you
that power was left on without
any operation being performed.
Track other than Track 1 is selected
as the recording track.
Pages
E-13, 14
Page E-18
Page E-18
Page E-34
Page E-52
Pages
E-13, 14
Page E-49
Page E-48
Pages
E-27, 28
Pages
E-27, 28
Page E-15
Page E-44
(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) Adjust the POWER button to
turn on power.
(3) Use the MAIN 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.
Replace the batteries with a set of
new ones or use the AC adaptor.
Use the FUNCTION button to
increase the volume.
Press the FUNCTION button to
turn it on.
• Press the lit key to continue with
Step 1 or Step 2 play.
• Press the PLAY/STOP button to
quit Step 1 or Step 2 play.
Press any button or keyboard key
to restore power to normal.
Use the track select buttons to select
Track 1. (Track 2 is melody track.)
• 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
649A-E-064A
LK90TV_e_62-65.p65 04.8.18, 4:46 PM62