Pcb View And Major Waveforms - Casio ML-2 Service Manual

6
1
2
1
Key scan signal KO0
MSM6521-11 pin39
2 Key scan signal KO7
MSM6521-11 pin46

PCB VIEW AND MAJOR WAVEFORMS

2 1 3
5
3
4
3
Sound signal output
MSM6521-11 pin29
4
Power amp output
AN8053N pin 1
— 9 —
4
5
Key A3 OFF (5.6V)
6
Key A3 ON
5 LED drive signal LY7
JC connector pin1
6 LED drive signal LX3
JC connector pin11