Casio AP-40 User Manual

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6. A certain button does not function
7. A certain tone is strange when record/playback
Replace the console PCBs.
Does the button function?
Yes
No
Replace MA1M PCB.
End
Check the cord of pedal unit
Is it disconnected?
Yes
No
Replace the main PCB.
Connect the cord

Casio AP-40 Specifications

General

Brand	Casio
Model	AP-40
Category	Synthesizer
Language	English