Sony STR-DA30ES Service Manual page 16

IC202,203 LC7821 (MAIN/AUDIO BOARD)
IC901 NJM2103D (PS BOARD)
IC103 LB1638M (DISPLAY BOARD)
GND 1
2
IN1
VCC 3
IN2 4
5
GND
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L1 1
L2 2
L3 3
L4 4
L COM1 5
L5
6
L6 7
L COM2 8
L7 9
L8 10
L COM3 11
LEVEL SHIFT
VEE 12
CE
13
DI
14
SHIFT RESISTER
CL 15
BUFFER
CR 1
2 VREF
VSC
+ –
OUTC
3
GND
4
Q
R
IC501,601,701
10
N.C.
9 OUT1
PROTECTOR
8 VS
7 OUT2
6
N.C.
— 59 —
30
R1
29 R2
28 R3
27 R4
26 R COM1
25 R5
24 R6
R COM2
23
22 R7
21 R8
20 R COM3
19
VDD
LATCH 18 RES
17
S
16 VSS
8 RESET
– +
VSA
7
6
VSB/SESIN
V+
5
S
+ +
– –
uPC2581V (S.AMP/MAIN BOARD)
BIAS CIRCUIT
PRE
REG DRIVE
DRIVE
1 2 3 4 5 6 7
PRE
DRIVE
DRIVE
8 9 10 11 12 14 15
13