Troubleshooting - Casio CTK-451 User Manual

Troubleshooting

Problem
No keyboard Sound
Any of the following symptoms
while using battery power.
• Dim power supply 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
volumes
• Sudden power failure when
playing at high volumes
• Flickering or 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 Song Bank play
• Loss of power, sound distor-
tion, or low volume when
playing from a connected
computer or MIDI device
Auto Accompaniment does not
sound.
The key or tuning does not
match when playing along with
another instrument.
Missing Song Bank tune.
E-32
CTK451_E32_34
Possible Cause
1. Power supply problem.
2. Power is not turned on.
3. Volume setting is too low.
4. The POWER/MODE switch is in
the CASIO CHORD or FINGERED
position.
Low battery power
Auto accompaniment volume is set to
0.
The tuning or transpose parameter is
set to a value other than 0 or 00.
1. Left-hand or right-hand part is
turned off.
2. Accompaniment volume is set to 0.
Page 32
Action
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. Set the POWER/MODE switch to
the NORMAL position.
3. Use the MAIN VOLUME button to
increase volume.
4. Normal play is not possible on the
accompaniment keyboard while the
POWER/MODE switch is set to
CASIO CHORD or FINGERED.
Change the POWER/MODE switch
setting to NORMAL.
Replace the batteries with a set of new
ones or use the AC adaptor.
Use the ACCOMP VOLUME button to
increase the volume.
Change the transpose or tuning pa-
rameter value to 0 or 00.
1. Check the display to see if the indi-
cator for one of the parts is not dis-
played. If so, press the part's but-
ton (LEFT ON/OFF, RIGHT ON/
OFF) to turn it on.
2. Adjust accompaniment volume.
01.7.26, 10:41 AM Adobe PageMaker 6.5J/PPC
See page
Page E-14
Page E-16
Page E-16
Page E-16
Page E-14
Page E-21
Page E-29
Page E-24
Page E-21
622A-E-034A