Casio M-300 manual JCM547-MA1MA, PCB View and Major Waveforms

PCB VIEW AND MAJOR WAVEFORMS

6 7

2 3 1 4 5

MC101

R125

R126

R127

R115

R114

R113

R112

R111

75	75	75	75	5	C114	R128	X101
								R129
							E	C115
R117						R130		B Q102	C110
R123								C117
R119
								C116
R118
R116									5	75
R120
									R110	75
R121
					5		5			75
R122
						C111				75
R124				LSI101					D104

R108 C109 R107 C108

	C107	C105
		R105
R106
B		5
E	Q101

D102

R104	C104	125	C102
C106

75

IC101

J101

L101

R101

D101

	PS-Q
	PS-BL
L102	LED101
C103

JA

JCM547-MA1MA

JCM547-MA1M A

No. 3

No.

13 JA 1 1 D105 D106 D107

D108 D109 D110 D111 D112

A 50ns

1

Px10

CH1 ˜ 1V

1Clock pulse COSI MSM6387-22 pin 9

13 R102

195

A 2ms A 2ms A 2ms

2

CH1 4 CH1 6 CH1

CH1

3		CH2 5			7
					CH2
Px10	Px10		Px10	Px10		Px10	Px10
			˜	˜		˜	˜
CH1 5V	CH2 5V
			CH1 . 1V	CH2 . 1V		CH1 . 1V CH2 . 5V
2 Key scan signal KO0		4	Sound signal output		6	Power amp input
MSM6387-22 pin 30			MSM6387-22 pin 5			AN8053N pin 6
3 Key scan signal KO1		5	Filter output		7	Power amp output
MSM6387-22 pin 29			Emitter of Q101			AN8053N pin 1

Tone: Flute

Key: A4

Volume: Maximum

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