Casio AP-20 Service Manual

— 14 —
Does the power indicator
light up?
Check the main volume.
Is it OK?
Does the demo tune sound?
Replace keyboard PCBs.
Disconnect JA and JB
connectors on the main PCB.
Follow "No power"
troubleshooting.
No
Yes
Yes
Yes
No
No
Replace main volume.
Press Demo button.
Replace the main PCB.
2. No sound
3. Distorted sound
Check the voltage selector.
Is it at proper position?
No
Yes
Replace the main PCB.
Set the voltage selector at
proper position.

Casio AP-20 Specifications

General

Brand	Casio
Model	AP-20
Category	Musical Instrument
Language	English