Casio CTK-401 manual Major Waveforms

MAJOR WAVEFORMS

1

1Clock pulse MSM6755B-17 pin 32

4

5

4Sound waveform (R-ch) Tone: Whistle

JC connector pin 4 Key: A4

5Sound waveform (L-ch) Volume: JC connector pin 3

2

3

2+5 V source DVDD JC connector pin 6

3APO signal

JC connector pin 5

6

7

6Button scan signal KO6 JA connector pin 14

7Button scan signal KO7 JA connector pin 15

8

9

8LCD common signal COM9 SED1278F0A pin 55

9LCD common signal COM10 SED1278F0A pin 56

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