Sony TA-VA80ES, Service Manual

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IC202 LC7821 (INPUT BOARD)
IC291 LC7821 (AUDIO BOARD)
IC001, 601, 651 STK350-230
(INPUT BOARD)
IC701 µPC2581V (INPUT BOARD)
IC901 NJM2103D (AC BOARD)
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30
29
28
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26
25
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23
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CONTROL
LATCH
SHIFT RESISTER
LEVEL SHIFT
CL
DI
CE
VEE
L COM3
L7
L COM2
L5
L4
L2
VSS
S
RES
VDD
R COM3
R8
R7
R COM2
R6
R4
R2
R5
R COM1
R3
R1
L3
L1
L COM1
L6
L8
BUFFER
2 3 5 4 6 7 9 8 1
MUTE
+ VOUT1 – VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2 + VOUT2
VCC1 VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG DRIVE
PRE
DRIVE
11 10 12
13
15 14
DRIVE
PRE
DRIVE
1
2
3
4
5
6
7
8
9
TR3 R1
R2
TR4
TR6
TR7
R4
R9
TR5
TR1
TR2
R6
D4 D3
R7
R8
TR8
D1 D2
R5
R3
INPUT
NF
-VEOUT
+VEOUT
V
SS
GND
V
CC
SUB
1
2
3
4 5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+
–
– +
– + –
+
Q
R S