Technics SX-PR603

Y7
VCC
GND
GND
VCC
Y6
Y5
Y4
Y3
Y2
Y1
Y0
B7
245
B6
B5
B4
B3
B2
B1
B0
A6
A7
OE1
OE2
DIR
A5
A4
A3
A2
A1
A0
A6
A7
A5
A4
A3
A2
A1
A0
IC106
9
8
7
6
5
4
3
2
11
12
13
14
15
16
17
18
1
19
20
10
9
8
7
6
5
4
3
2
11
12
13
14
15
16
17
18
1
19
20
10
OE
IC109
GND
DRIVER
DRIVER
RECEIVER
RECEIVER
VCC
8
5
3
16
10
9
12
15
4
11
14
13
7
6
2
1
GND VCC
1 2 3 4 5
TC7SU04FT85L
(INVERTER)
IC105
GND VCC
1 2 3 4 5
T7SET04FT85L
(INVERTER)
M5M34051FPE2
(BUS TRANSCEIVER)
IC108
TC74LCX245F
(BUS TRANSCEIVER)
IC110
T74VHCT541AF
(BUS DRIVER)
1
2
3
4
5
6
MAC
PC1
PC2
MIDI
MSEL
TXD-
7
8
9
10
TXD+
E
RXD+
RXD-
CN103
+3.3D
+3.3D
+24V
+3.3D
C118 0.1
Z109 4.7Kx4 Z107
R119
R123
330
470K
R125
1.5K
R127
100
D106
MA111TX
R120 330
R121 330
4.7Kx4
Z106
220x4
D105
MA111TX
C123
50V1
R126
120K
R122 330
+5D C125
0.1
C120
50V1
R124
1.5K
Q105
2SD601AQTX
Q104
2SD601AQTX
GND VCC
1 2 3 4 5
TC7SH08FU
(2 INPUT AND GATE)
IC107
X
W
V
U
T
S
R
Q
A
B
C
D
E
G
H
F
D104
+5D
+5D
+5D
R117 4.7K
C121 0.1
R118 4.7K
D103
D102 D101
MA152WATX MA152WATX
MA152WATX
MA152WATX
Z105
47x4
ZC104
47P
ZC105
100P
L101
QLBG005A
C119
0.01
R133
47K
E
F
G
H
I
C
A
B
D
SCHEMATIC DIAGRAM-7
TO JACK CIRCUIT
(CN3) ON SCHEMATIC
DIAGRAM 32
J