Technical Reference; Troubleshooting - Casio LK-100 User Manual

Technical Reference

Troubleshooting

Be sure to check the following table whenever you experience problems with keyboard operation.
Symptom
• No sound when keyboard keys
are pressed.
• Any of the following symptoms
while using battery power.
• Dim power indicator
• 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
• Loss of power, sound distortion, or low volume when playing from a connected computer or MIDI
device
• Abnormally low microphone volume
• Distortion of microphone input
• Dim power supply indicator when a microphone is used
• Key light stays on.
• Keyboard keys light but no
sound is produced.
662A-E-031A
Cause
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.
6. LOCAL CONTROL is off.
• Low battery power
• Keyboard is waiting for play of
the correct note during Step 1
or Step 2 play.
• Power on alert is telling you that
power is left on.
Action
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 MAIN 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.
6. Turn on LOCAL CONTROL.
• 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 any button or keyboard
key to resume normal
operation with the keyboard in
its initial power on setting.
See Page
Page E-11
Page E-15
Page E-13
Page E-18
Page E-15
Page E-28
Page E-11
Pages
E-24, 25
Pages
E-24, 25
Page E-12
E-29