Sony STR-SE581 Service Manual page 18

IC401 LC7822
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
µPC2581V
IC701
IC950 NJM2103D
30
29 IN
28
27 OUT
26
25 IN
24
23 OUT
22
IN IN
21
20
OUT
19 VDD
LATCH 18 RESET
17 S
16 VSS
PROTECTOR
REG DRIVE
1 2 3 4 5
CR
1
2 VREF
VSC
+ –
OUTC
3
GND 4
IC551 STK350-230
INPUT 1
NF
2
3
4
-VEOUT 5
+VEOUT
6
7
V
SS
GND 8
V 9
CC
BIAS CIRCUIT
PRE PRE
DRIVE
DRIVE DRIVE
6 7 8 9 10 11
– +
Q
R S
+
– +
— 28 —
TR3 R1
TR1
TR2
TR4
R2
TR7
R4
TR5
R3
D1 D2
R5 R8 R7
R9
TR8
14 15
12 13
8
RESET
VSA
7
6
VSB/SESIN
V+
5
–
R6
TR6
D4 D3