Read Sony STR-V220 Service Manual online
STR-V220
– 23 –
– 24 –
4-10. IC BLOCK DIAGRAMS
• Main section
IC301 LV1035M
STRIM
OSC
VOL
VOL
VCA
VCA
A
B
A
B
VCA
VCA
VCA
VCA
VCA
VCA
DEV
NOISE
GEN
NOISE
FILTER
BPF
CONTROL
CH
CONTROL
BPF
V REF
STRIM
S
MODE
RECT
RECT
DC
CUT
B NR
OUT
FILTER
DATA
DECODER
VOL/
MUTE
BPF
RECT
LOGIC
FF
LOGIC
FF
RECT
C MODE
LOGIC
LOGIC
S
S
S
A
A
S
B
B
B
A
B
C
B
L
R
A
A
A
B
A
B
A
B
A
B
A
B
S
VDD
PCM
PCM
CONTROL
SRAM
IN
FILTER
R
L
C
S
R
A
B
A
B
A
B
A
B
L
L
R
L
R
R BPF2
R BPF1
S DC OUT
C DC OUT
R DC OUT
L DC OUT
V REF
VCC
C OUT
S OUT
R OUT
L OUT
GND
L IN
R IN
S IN
DELAY OUT
L BPF2
L BPF1
RT IN
LT IN
DC CUT
C MODE
GND
NS BPF1
NS BPF1
OSC
NS BPF2
ENABLE
DATA
CLK
DATA
CLK
VSS
OSC
OSC
VDD
A/D
NS
D/A
DC CUT
DC CUT
VCC
DET
IREF
GND
S-OUT
R-OUT
L-OUT
L RECT
DC CUT4
R RECT
DC CUT3
L BPF3
VLR TH
VLR 1
VLR 2
VCS 2
VCS 1
VCS TH
L+R RECT
DC CUT2
L-R RECT
DC CUT1
R BPF3
64 63 62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
41
40
39
38
37
36
35
34
33
18
17
16
15
14
13
12
11
10
9
7
3
4
5
6
1
2
8
19 20 21
22
23
24
25
26
27 28 29
30
31
32
42
IC401 LC7822
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTROL
LATCH
SHIFT RESISTOR
LEVEL SHIFT
CL
DI
CE
VEE
OUT
IN
OUT
IN
OUT
IN
VSS
S
RESET
VDD
OUT
IN
IN
OUT
IN
OUT
IN
IC950 NJM2103D
1
2
3
4
5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+
–
–
+
–
+
–
+
Q
R
S
IC501 LA1838
ALC
BUFF
AM
OSC
AM
MIX
AM
RF. AMP
AGC
IF
DET
S-CURVE
AM/FM
IF
BUFF
REG
TUNING
DRIVE
GND
VCC
PILOT
DET
VCO
FF
STEREO
DRIVE
STEREO
SW
MUTE
FF
FF
FM
IF
FM
DET
DECODER
ANTI BIRDIE
1
2 3
4
5
6
7
9
8
20
19
18
17 16
15
14
11
10
21
22
23
24
25
27
26
29
30
OSC.BUFF
FM-SD.ADJ
AM-OSC
REG
FM-AFC
AM-RF-IN
AGC
MPX-IN
FM-DET OUT
AM-DET OUT
OUT L
OUT R
AMP-IN L
AMP-IN R
AMP OUT R
AMP OUT L
VCO-STOP
STEREO
AM/FM
AM. SD
FM. SD
AM. SD ADJ
IF-BUFF
MUTE
VCC
FM DET
FM-IN
AM-MIX
FM-IF
AM-IF
GND
TUNED
S METER
FM
S METER
AM
COMP
SD
AM
12
13
PHASE
DET
28
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