Printed Wiring Board - Main Section - Sony HCD-D90AV Service Manual

IC601 LA2786
1
BPF1 NOISE
FILTER
BPF2 2
VREF 3
V REF
S-CH DC OUT 4
C-CH DC OUT
5
L-CH DC OUT 6
7
R-CH DC OUT
VREF 8
L-IN 9
R-IN
10
V
SS 11
12
L-BPF1
L-BPF2 13
L-BPF3 14
DC CUT 15
DC CUT 16
R RECT 17
L RECT
18
VLR-TH 19
20
VLR-1
VLR-2 21
IC604 TC9210P
V 1
SS
OUT
2
L-CH
DATA
L-CH IN 3
LATCH
CIRCUIT
4
A-GND
NC 5
6
CS1
LEVEL
GND 7
SHIFT
CIRCUIT
8
CK
LPF
NOISE
CH
BALANCE
CONTROL
DIVIDER
VR
CONTROL
VR
VR
VCA VCA
VCA VCA
VCA VCA
VCA VCA
LPF
LPF
+
RECT RECT RECT
LOG
DIFF
R-CH
DATA
LATCH
CIRCUIT
SHIFT RESISTER
(13bit)
LEVEL
SHIFT
CIRCUIT
STROBE OSC
CIRCUIT
NOISE
GENERATOR
OSC
+
RECT
LOG
DIFF
IC901 LA5617
16 V
DD
ON/OFF
OUT
15
14 IN R-CH
13
A-GND
VREF
12 NC
ERROR
AMP
11
CS2
10 STB
2 3
1
9
DATA
— 80 —
CLK
42
41 DATA
40 ENABLE
OSC1
39
38 V
CC
37 L-OUT
R-OUT
36
S-OUT
35
34 C-OUT
CMODE-CAP.
33
32 C-TRIM DC CUT
R-BPF1
31
R-BPF2
30
29 R-BPF3
28 DC CUT
27
DC CUT
26 L-R RECT
25 L+R RECT
24 VCS-TH
23 VCS-1
22 VCS-2
CURRENT CURRENT
ON/OFF
LIMITER LIMITER
VMUTE VCC
VCC
VREF
~ _ 1.8V
4 5 6 7 8
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ERROR
AMP
9 10