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Celviano AP-21
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Major Waveforms - Casio ap-21 Service Manual
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User manual
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User manual
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User manual
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1
2
˜
˜
CH1 .2V
CH2 .2V
1 Filter output L-ch
2 Filter output R-ch
Tone : Piano 1
Key : A4
6
7
8
CH1 5V
CH2 5V
6 Button scan signal L24
7 Button scan signal L25
8 Button scan signal L26
MAJOR WAVEFORMS
A 1ms
CF connector pin 2
CF connector pin 1
A 2ms
CH2 5V
UPD65005GF-419 pin 53
UPD65005GF-419 pin 54
UPD65005GF-419 pin 55
3
CH1
4
5
CH2
˜
CH1 5V
CH2 5V
3 Key scan signal KC0
4 Key scan signal KC1
5 Key scan signal KC2
CH1
CH2
CH3
— 10 —
A 20 µs
CH1
CH2
CH3
CH3 5V
CA connector pin 20
CA connector pin 19
CA connector pin 18
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