Sony TA-AV581 Service Manual page 15

IC101 LC7822 (MAIN BOARD)
1
IN
2
3
OUT
4
5
IN
6
7
OUT 8
9
IN
10
OUT 11
LEVEL SHIFT
12
VEE
CE
13
DI
14
SHIFT RESISTOR
CL 15
IC301 LC75373ED (MAIN BOARD)
33
+
–
34
LSELO
L4 35
L3 36
L2
37
L1 38
VDD 39
R1 40
R2 41
R3 42
R4 43
44
RSELO
–
+
1
IC701 µPC2581V (MAIN BOARD)
PROTECTOR
REG
1
30
29
28
27
26
25
24
23
22
21
20
19
LATCH 18
17
16
32 31 30 29 28
+
–
–
+
+
–
–
+
+
–
–
+
2 3 4 5 6 7 8
BIAS CIRCUIT
PRE
DRIVE
DRIVE
2 3 4 5 6 7
IC551 STK350-230 (MAIN BOARD)
IN
INPUT 1
NF
2
OUT
3
4
IN
-VEOUT 5
+VEOUT 6
OUT
V 7
SS
IN IN
GND
8
V 9
CC
OUT
VDD
RESET
S
VSS
27 26 25 24 23
–
+
–
+
SHIFT
DECODER LATCH
REGISTER
+
–
+
–
9 10 11
PRE
DRIVE
DRIVE
8 9 10 11 12 14 15
13
— 22 —
TR3 R1
TR1
TR2
TR4
R2
TR7
R4
TR5
R3
D1 D2 R8 R7
R5
R9 TR8
22
LFIN
+
21 LFOUT
–
+
20 LROUT
–
19 VREF
CONTROL 18 CE
17
DI
16
CL
15
VSS
–
14 RROUT
+
–
13 RFOUT
+
12
RFIN
R6
TR6
D4 D3