Casio AP-20 Service Manual

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MAJOR WAVEFORMS
CH1 .2V CH2 .2V
˜˜
A 1ms
CH1
CH2
1
2
1 Filter output L-ch CC connector pin 1
2 Filter output R-ch CC connector pin 2
6 Button scan signal KC0 UPD65005GF-419 pin 53
7 Button scan signal KC1 UPD65005GF-419 pin 54
8 Button scan signal KC2 UPD65005GF-419 pin 55
CH1 5V CH2 5V
A 2ms
CH1
CH2
6
7
CH2 5V
CH3
8
Tone : Piano 1
Key : A4
3 Key scan signal KC0 JA connector pin 5
4 Key scan signal KC1 JA connector pin 4
5 Key scan signal KC2 JA connector pin 3
CH1 5V CH2 5V
˜
CH3 5V
A 20 µs
CH1
CH2
3
5
4
CH3

Casio AP-20 Specifications

General

Brand	Casio
Model	AP-20
Category	Musical Instrument
Language	English