Filter
Top Products
— 5 —
13
JA
1
JCM547-MA1M A
MC101
R125
R126
R127
R115
R114
R113
R112
R111
R123
R119
R118
R117
R116
R120
R121
R122
R124
75
75
75
75
5
C114
R128
X101
R129
C115
Q102
C117
C116
B
E
5
5
LSI101
C111
R130
C110
5
5
R108
C109
R107
C108
R106
Q101
R110
D104
75
75
75
75
E
B
PZ-R
C107
C105
R104
C104
C102
125
D102
J101
L101
R101
D101
R105
C106
IC101
75
PS-Q
PS-BL
LED101
L102
C103
No.
R102
328
75
PZ-BK
75
D105
195
13
D112D111D110D109D108
No. 3
D107D106D105
1JA
JCM547-MA1MA
PCB VIEW AND MAJOR WAVEFORMS
Tone: Flute
Key: A4
Volume: Maximum
˜
˜
˜
˜
˜
1 Clock pulse COSI
MSM6387-22 pin 9
2 Key scan signal KO0
MSM6387-22 pin 30
3 Key scan signal KO1
MSM6387-22 pin 29
6 Power amp input
AN8053N pin 6
7 Power amp output
AN8053N pin 1
4 Sound signal output
MSM6387-22 pin 5
5 Filter output
Emitter of Q101
CH1
A 50ns
CH1
1V
1
Px10
A 2ms
CH1
CH2
CH1 5V CH2 5V
2
3
Px10 Px10
4
5
CH1 . 1V
CH2 . 1V
CH1
CH2
A 2ms
Px10 Px10
6
7
CH1 . 1V CH2 . 5V
CH1
A 2ms
Px10 Px10
1
4
5
32
6 7