E-23TroubleshootingSymptomNo sound produced whenkeyboard keys are pressed.Keyboard out of tune.No sound produced by demo tuneplay.Memory contents deleted.No sound produced by connectedexternal MIDI sound source whenthe digital piano keys are pressed.A tone’s quality and volumesounds slightly differentdepending where it is played onthe keyboard.Possible Cause1. VOLUME knob set to MIN.2. Headphones connected to thedigital piano.3. Local Control turned off.4. Check the currentaccompaniment mode setting.Normally, the accompanimentkeyboard will not produce anynote while CASIO CHORD orFINGERED is selected as theaccompaniment mode.1. The piano key is set to a valueother than C.2. Incorrect pitch setting of thepiano.1. VOLUME knob set to MIN.2. Headphones connected to thedigital piano.Lithium battery is dead.1. The digital piano Send Channeldoes not match the SendChannel of the MIDI soundsource.2. Volume or expression setting ofthe external sound source is setto 0.Action1. Move the VOLUME knob moretowards MAX.2. Disconnect the headphonesfrom the digital piano.3. Turn on Local control.4. Change the accompanimentmode to NORMAL.1. Change the piano key setting toC, or turn the digital pianopower off and then back onagain.2. Correct the pitch setting, or turnthe digital piano power off andthen back on again.1. Move the VOLUME knob moretowards MAX.2. Disconnect the headphonesfrom the digital piano.Contact your CASIO ServiceProvider for replacement of thelithium battery.1. Change the Send Channelsettings so they are identical.2. Change the volume orexpression setting of theexternal sound source to anappropriate value.ReferencePage E-6Page E-5Page E-22Page E-12Page E-21Page E-21Page E-6Page E-5Page E-25Page E-22See thedocumentationthat comes withthe externalsound source.404A-E-025BThis is an unavoidable result of the digital sampling process,* and does not indicatemalfunction.* Multiple digital samples are taken for the low range, middle range, and high range ofthe original musical instrument. Because of this, there may be a very slight differencein tonal quality and volume between sample ranges.