Block Diagram - Tuner/Audio Section - Sony STR-DE897 Service Manual

STR-DE897
Q Q
3 7 6 3 1 5 1 5 0
4-3. BLOCK DIAGRAM — TUNER/AUDIO SECTION —
VIDEO 3
VIDEO 1
INPUT
AUDIO AUDIO
AUDIO
IN
L R L R L
-2 -3 -5 -6 -3
J2052
(2/2)
TN1
FM/AM TUNER UNIT
L-CH
FM 75Ω
COAXIAL
R-CH R-CH
STEREO 76 STEREO
TUNED 75 TUNED
ANTENNA
MUTING 78 MUTE
CE 74 SLATCH
AM
73 DO
DO
DATA
70 SW RY
CLOCK
T E
L 1 3 9 4 2 2 9 6 5 1 3
TU+10V
SUB
WOOFER
J303
-1 -2 -3 -4 -5 -6 -1 -2
L R L R L
FRONT SURROUND FRONT
CENTER
MULTI CH IN 2
w w w
RELAY
DRIVER
Q300
VIDEO 2 DVD TV/SAT
2ND
AUDIO AUDIO AUDIO AUDIO
OUT
ZONE
OUT IN OUT IN IN
R L R L R L R L R
-4 -1 -2 -5 -6 -3 -4 -1 -2
J2553 J2552
TV/SAT
23
DVD/LD
24
VIDEO 2 OUT
19
VIDEO 2
25
VIDEO 1 OUT
20
VIDEO 1
26
VIDEO 3
21
16 15 14
2ND ROOM RY 43
006_LAT
44 13 11
1 3
BUFFER
5 IC1142 6
011_LAT 47 9 8
IC.DATA 17
IC.CLK 16
SYSTEM VOL LATCH 22
CONTROL
IC1101 (1/4)
16 15 14
6.1L
27
6.1SL
24
6.1C
20
7.1IL
26
7.1SL
23
7.1L
19
7.1SW
10
6.1SW
9
J305
SURR BACK
(1/2)
-1 -2
L R
-3 -4 -5 -6
CENTER SUB
WOOFER
R L R J304
SURROUND
MULTI CH IN1
x a o
y
. i
http://www.xiaoyu163.com
RY300
PRE AMP
IC300
J305 (2/2)
-3
L
1 3
-4
R R-CH
DIR
FUNCTION SELECT
IC401
61
AUDIO
IN
18 4
AUDIO
SELECT
IC2560
COM
22 2
SEL
SW
80
18
MCU
20
I/F
Q Q 19
3 7 6
AUDIO
SELECT
IC402
L OUT
25 57
SL OUT
22
54
C OUT
C
18 55
SEL
SW
OUT
SW
11 56
SR OUT SEL
7 53 R-CH
R OUT
R-CH 4 58 R-CH
SBL
52
SEL
51 R-CH
15 11 12
SBL OUT
SW OUT
DIGITAL
C
C OUT
SECTION
SL OUT
(Page 17)
L OUT
u 1 6 3
16 16
http://www.xiaoyu163.com
2 4
8 9 9
3.3V
MD/TAPE
REG +7V
Q652
OUT IN
L R L R
-7V +7V
-1 -2 -3 -4
21 24 22 J302
DVDD AVEE AVCC
EQ AMP
63
IC301
R-CH 62
1
74
73
R-CH
78
76
6
R-CH 7
L
46
SEL
R-CH 47
MUTE
Q541,591
SL
3 1 5 1 5 0 8 9 2
40
SEL
R-CH 41
MUTE
Q641,691
35
MUTE
Q791
34
MUTE
Q391
28
R-CH 29
MUTE
5
Q441,491
13 10
SUB WOOFER
AMP
Q410
IC604
DIGITAL
B
SYSTEM MUTE
SECTION
(Page 17)
• Signal path
: TUNER (FM/AM)
m
: VIDEO (AUDIO)
: CD (ANALOG)
c o
• R-ch is omitted due to
same as L-ch.
.
2
8 9 9
PHONO SA-CD/CD
IN IN
L R L R
-1 -2 -3 -4
J301
3
L-CH
DIGITAL
A
SECTION
R-CH
(Page 17)
FL-CH
FR-CH
4 9 8 2 9 9
SL-CH
SR-CH POWER
D
SECTION
(Page 21)
C-CH
SBL-CH
SBR-CH
J2551
PRE SUB
7
OUT WOOFER
RY351
RELAY
DRIVER
Q351