Block Diagram - Tuner/Audio Section - Sony STR-DE997 Service Manual

4-2. BLOCK DIAGRAM — TUNER/AUDIO SECTION —
VIDEO 3
INPUT
AUDIO
AUDIO
IN
L R L R
-2 -3 -5 -6
J2702
(2/2)
TN1
FM/AM TUNER UNIT
L-CH
FM 75Ω
COAXIAL R-CH
R-CH
STEREO 28
TUNED 29
ANTENNA
30
MUTING
CE 34
AM
DO 31
DATA 33 T.DATA
CLOCK 32 T.SERIAL_CLK
TU+10V
22
SUB
WOOFER
J303
-1 -2 -3 -4 -5 -6 -1
L R L R
FRONT SURROUND
CENTER
MULTI CH IN 2
STR-DE997
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VIDEO 1 VIDEO 2 DVD TV/SAT
AUDIO AUDIO AUDIO AUDIO AUDIO
ZONE
OUT IN OUT IN IN
L R L R L R L R L R
-3 -4 -1 -2 -5 -6 -3 -4 -1 -2
J2553 J2552
2ND ROOM RY 41
006_LAT
3 13 11
TUNER_STEREO
7.1_DAT 1 1 3
BUFFER
TUNER_AUTO_STOP
7.1_CLK 2 5 6
IC1142
TUNER_MUTE
011_LAT 4 9 8
T.LAT
TUNER_DO
116
VOL_IC.DATA
VOL_IC.CLK 117
VOL_LATCH 118
SYSTEM
WOOFER_RY
CONTROL
IC1101 (1/5)
J305
SURR BACK
(1/2)
-1 -2
L R
-2 -3 -4 -5 -6
SUB
CENTER
WOOFER
L R L R J304
FRONT SURROUND
MULTI CH IN 1
RY300
RELAY
DRIVER
Q300
PRE AMP
IC300
J305 (2/2)
-3
L 1 3
2ND
OUT
-4
R
R-CH
61
AUDIO
TV/SAT IN
23 18 4
DVD/LD
24
VIDEO 2 OUT
AUDIO
19
VIDEO 2 SELECT
25
VIDEO 1 OUT IC2560
20
VIDEO 1
26
COM
VIDEO 3
21 22 2
SEL
SW
16 15 14
80
18
MCU
20
I/F
19
16 15 14
AUDIO
SELECT
IC402
L OUT
6.1L
27 25 57
6.1SL
24
SL OUT
6.1C
22 54
20
7.1IL
26
C OUT
7.1SL
23 18 55
7.1L
19
SW
7.1SW OUT
10 11 56
SR OUT
6.1SW
9 7 53
R-CH
R OUT
R-CH 4 58 R-CH
SBL
52
SEL
51 R-CH
15
SBL OUT
SW OUT
DIGITAL
C
C OUT
SECTION
SL OUT
(Page 14)
L OUT
13 13
3.3V
MD/TAPE
REG +7V
Q652
OUT IN
L R L
DIR -7V +7V
-1 -2 -3 -4
FUNCTION SELECT
IC401
21 24 22
DVDD AVEE AVCC
63
R-CH 62
74
R-CH 73
78
76
6
R-CH 7
L
46
SEL
R-CH 47
MUTE
Q541,591
SL
40
SEL
R-CH 41
MUTE
Q641,691
35
MUTE
C
Q791
SEL
SW
34
SEL
MUTE
Q391
28
29
R-CH
MUTE
Q441,491
11 12 13 10
Q410
SYSTEM MUTE
STR-DE997
PHONO SA-CD/CD
IN IN
R L R L R
-1 -2 -3 -4
J301
J302
EQ AMP
IC301
1 3
L-CH
DIGITAL
A
SECTION
R-CH
(Page 14)
FL-CH
FR-CH
SL-CH
SR-CH POWER
D
SECTION
(Page 18)
C-CH
SBL-CH
SBR-CH
J2551
PRE SUB
5 7
OUT WOOFER
SUB WOOFER RY351
AMP
IC604
DIGITAL
RELAY
B
DRIVER
SECTION
Q351
(Page 14)
• Signal path
: TUNER (FM/AM)
: VIDEO (AUDIO)
: CD (ANALOG)
• R-ch is omitted due to
same as L-ch.