Troubleshooting - Casio CTK-671 User Manual

Troubleshooting

Problem
No keyboard Sound
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/head-
phone 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 dis-
play when playing at high vol-
ume
• 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
demo tune play
• Loss of power, sound distortion,
or low volume when playing
from a connected computer or
MIDI device
Auto Accompaniment does not
sound.
Sound output does not change
when key pressure is varied.
Playing the keyboard sounds two
tones.
Different tones sound when keys
in different keyboard ranges are
pressed.
703A-E-071A
Possible Cause
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.
6. Mixer channel 1 is turned off.
7. Mixer channel 1 volume setting is
too low.
Low battery power
1. Accompaniment volume is set to
000.
2. Auto Accompaniment part Chan-
nels 6 through 10 are turned off.
3. Auto Accompaniment part Chan-
nels 6 through 10 volume setting is
too low.
Touch response is turned off.
Layer is turned on.
Split is turned on.
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. Press the POWER button to turn on
power.
3. Use the 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.
6. Use the Mixer to turn channel 1 on.
7. Use the Mixer to raise the volume
setting for channel 1.
Replace the batteries with a set of new
ones or use the AC adaptor.
1. Use the ACCOMP VOLUME button
to increase the volume.
2. Use the Mixer to turn the channels
on.
3. Use the Mixer to raise the volume
setting for the applicable channel.
Press the TOUCH/TRANSPOSE/SET-
TING button to turn it on.
Press the LAYER button to turn off lay-
ering.
Press the SPLIT button to turn off split.
See page
Page E-16
Page E-21
Page E-21
Page E-29
Page E-65
Page E-35
Page E-36
Pages
E-16, 17
Page E-34
Page E-35
Page E-36
Page E-61
Page E-59
Page E-59
E-69