Casio AP-24 - Manual (Page 27)

E-23
Symptom
No sound produced when
keyboard keys are pressed.
Keyboard out of tune.
Pedal effect continues to be
applied even though pedals are
not pressed.
No sound produced by demo tune
play.
Memory contents deleted.
No sound produced by connected
external MIDI sound source when
the digital piano keys are pressed.
Possible Cause
1. VOLUME knob set to MIN.
2. Headphones connected to the
piano.
3. Local Control turned off.
1. Transpose is set to a value other
than 0.
2. Incorrect tuning setting
Problem with the connection
between the pedals and piano.
1. VOLUME knob set to MIN.
2. Headphones connected to the
digital piano.
Lithium battery is dead.
1. The digital piano Keyboard
Channel does not match the send
Channel of the MIDI sound
source.
2. Volume or expression setting of
the external sound source is set
to 0.
Reference
Page E-11
Page E-10
Page E-21
Page E-19
Page E-20
Page E-27
Page E-11
Page E-10
Page E-6
Page E-19
See the
documen-
tation that
comes with
the exter-
nal sound
source.
Action
1. Move VOLUME knob more
towards the MAX side.
2. Disconnect the headphones
from the digital piano.
3. Turn on Local control.
1. Change the transpose setting to
0, or turn the digital piano power
off and then back on again.
2. Correct the tuning setting, or
turn the digital piano power off
and then back on again.
Turn off the digital piano power
and then check to make sure that
the pedal plug is securely
connected to the piano’s pedal
connector.
1. Move VOLUME knob more
towards the MAX side.
2. Disconnect the headphones
from the digital piano.
Contact your CASIO Service
Provider for replacement of the
lithium battery.
1. Change the send Channel
settings so they are identical.
2. Change the volume or
expression setting of the external
sound source to an appropriate
value.
Troubleshooting
420A-E-027A