Technics SX-PX552, Service Manual

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IC3
M5M34051FPE2
2DE
GND
VCC
1DE
E
1 2 3 4 5 6 7 8
+VCC
+5D
GND
1 2 3 4 5 6 7 8
+VCC GND
A
B
C
D
E
1
+5D 2
SOFT 3
SOSU 4
SUST 5
MRXD 6
MTXD 7
TO
FJASP
CN6
CN6
L41 0
+5D
MAC 1
PC1 2
PC2 3
MIDI 4
MSEL 5
TXD- 6
TXD+
E
RXD+
RXD-
7
8
9
10
TO
COM
CN1
CN8
E 1
SW 2
LED 3
+5D 4
CN9 +5D
+5D
+5D
+5D
L42 0
L43 0
L44 0
L45 0 R11 470
R12
150K
R13
150K
R14
150K
C6
100P
C7
100P
C8
0.1
C9
0.1
C10
0.1
R10 470
R17 1.5K
R16 1.5K
R15 1.5K
R18 10K
L46 470
L47 470
L48 470
L49 470
R20 0
R21 0
A
B
B
C
A
B
C
D
Z11
10Kx4
D8
L5
10
1
2
6
7
13
14
11
10
16
3
5
4
15
12
9
8
D9
D10 D11
C11
0.1
C3
0.1
C2
0.22
C1
5MI
+5D
+5D
SNS
0.22
D3
D2
D1
MA8030HTX
L35
0
R8
100K
R7
100K
R6
1K
R4
2.2K
R5
1K
R111
10K
R22 0
R23 0
+5D
R112
10K
R24 1M
R26
470
X2
614KHz
C14
100P C13
100P
R25
0
R35 1M
X3
1MHz R36
4.7K
C24
100P C25
100P
+5D
C26
0.1
D21
L50
0
D31
C23
0.001
R19
0
Q2
2SB709ARTX
Q3
2SD601AQTX
CHECK
TERMINAL
UNLESS OTHERWISE SPECIFIED:
DIODES ARE MA111TX.
IC4 IC5
T7WU04FTE12L
(TRIPLE INVERTER)
T7WU04FTE12L
(TRIPLE INVERTER)
(BUS TRANSCEIVER)
MAIN CIRCUIT
A