Ic Block Diagrams - Sony STR-V220 Service Manual

STR-V220

4-10. IC BLOCK DIAGRAMS

• Main section
IC301 LV1035M
64 63 62 61 60 59 58 57
R BPF2 1
RECT
LOGIC
R BPF1
2 BPF
RECT
FF
LOGIC
VCA VCA
S DC OUT
3
VCA VCA
C DC OUT 4
R DC OUT 5
6
L DC OUT
V REF 7 V REF S
MODE
VCC 8
C OUT STRIM
9 C
S OUT S
10
A
A
R
11 R
R OUT B
B
A
A
L
12 L B
L OUT
B
GND 13
A
B
A
L IN
14
L
B
A
A
A
R IN 15 S
R B
B
B
S IN 16
S
A
S
A
B
S R
17 18 19 20 21 22 23
56 55 54 53 52 51 50
RECT
LOGIC
RECT
FF
LOGIC
VCA VCA
A
VOL
B
VCA VCA
A
VOL
B
CH
CONTROL
BPF
CONTROL
C MODE
NOISE
FILTER
NOISE
GEN
STRIM
B NR
A
S
DATA
DC
VOL/
DECODER
CUT OUT
MUTE
FILTER
C
B
A
IN
FILTER
B
SRAM
PCM
CONTROL
A
B B
L
PCM
VDD
24 25 26 27 28 29 30 31
– 23 –
IC401 LC7822
1
IN
2
3
OUT
49 4
5
48 L BPF2
IN
6
7
BPF 47 L BPF1
OUT 8
9
IN
10
OUT 11
12
VEE
CE 13
R 46 RT IN
DI
14
SHIFT RESISTOR
CL 15
L
45 LT IN
IC501 LA1838
44 DC CUT
C MODE
43
42 GND
41 NS BPF1
30 29 28 27 26
40 NS BPF2
REG
OSC 39 OSC
ALC
AM
AM AM
DEV RF. AMP
OSC MIX
BUFF
SD
COMP
AM
38 CLK
IF
AM/FM
IF
DATA
37 FM
S-CURVE
BUFF
S METER
FM FM
ENABLE
36
IF DET
DATA
35
2 3 4
1
34 CLK
33 VSS
32
IC950 NJM2103D
30
29 IN
CR 1
28
OUT
27
26
VSC 2
25 IN
+ –
24
23 OUT
OUTC 3
22
IN IN
21
20 OUT
GND 4
LEVEL SHIFT
19
VDD
LATCH 18 RESET
17 S
16 VSS
20 19 18
25 24 23 22 21
DECODER
ANTI BIRDIE
STEREO
AGC
SW
STEREO
DRIVE
DET
FF FF FF
VCO
AM
PILOT
S METER
DET
PHASE
DET
TUNING
DRIVE
GND
VCC
5 6 7 8 9 10 11 12 13 14
– 24 –
8
RESET
– +
VREF 7 VSA
6
VSB/SESIN
5 V+
Q
R S
+ – + –
17 16
MUTE
15