Read Sony STR-DH720 / STR-DH720HP Service Manual online
STR-DH720/DH720HP
STR-DH720/DH720HP
13
13
5-1. BLOCK DIAGRAM – TUNER/AUDIO Section –
SECTION 5
DIAGRAMS
C-CH
SR-CH
FR-CH
SL-CH
FL-CH
R-IN
L-IN
SW
SEL
C
SEL
SB
SEL
SL
SEL
R-CH
INR2
INL2
INL3
INR3
INR3
R-CH
R-CH
DIR
FUNCTION SELECT
IC400
VCC
VEE
+7V
SEL
SW
MCU
I/F
-7V
SW OUT
SBL
SBR
C OUT
SL OUT
FL OUT
8
21
23
SYSTEM
CONTROL
IC2105 (1/5)
AUDIO AMP
IC101
TUNER_LAT
9 TUNER_MOSI
10 TUNER_CLK
EVOL_DATA
DCAC_MUTE
EVOL_CLK
TUNER_SD
TUNER_MISO
97
96
96
41
57
58
58
12
8
10
62
11
59
60
60
75
14
13
18
17
SBR-CH
R-CH
19
SW-CH
16
71
66
70
68
69
SR OUT
FR OUT
72
73
67
48
47
52
51
42
41
46
45
47
52
51
42
41
46
45
SBL-CH
20
15
76
25
26
L
SEL
5
1
OP AMP
IC4121
5
3
1
2
2
61
7
6
6
1OUT
2+
AM
TN1
FM/AM TUNER UNIT
L-CH
US, CND
SD
CE
DO
DI
CLK
TU+9V
FM 75ȍ
COAXIAL
ANTENNA
R-CH
J401 (1/2)
J409
-1
-2
-4
-5
-4
-5
-7
-8
J4100
AUTO CAL
MIC
J401 (2/2)
-1
-2
SA-CD/CD
AUDIO IN
L
R
TV
AUDIO IN
L
R
J101 (1/2)
VIDEO 2 IN
AUDIO
L
R
L
R
VIDEO 1
AUDIO IN
L
R
SAT/CATV
AUDIO IN
L
R
VIDEO 1
AUDIO OUT
11 TUNER_RDS_CLK
22 TUNER_RDSDATA
ECE
AM
TN1
FM/AM TUNER UNIT
L-CH
SD
CE
DO
DI
CLK
TU+9V
FM 75ȍ
COAXIAL
ANTENNA
R-CH
RDS INT
RDS DATA
6LJQDOSDWK
: TUNER (FM/AM)
: VIDEO (AUDIO)
: CD (ANALOG)
: TUNER
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: VIDEO (AUDIO)
: CD (ANALOG)
: TUNER
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DIGITAL
SECTION
(Page 14)
(Page 14)
DIGITAL
SECTION
(Page 14)
(Page 14)
POWER KEY
SECTION
(Page 18)
(Page 18)
MIC MUTE
DRIVER
Q4121 - Q4123
A
B
C
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