Block Diagram - Tuner/Audio Section - Sony STR-DE895 Service Manual

4-2. BLOCK DIAGRAM — TUNER/AUDIO SECTION —
DE895 DE995
VIDEO 3 VIDEO 3
VIDEO 1
INPUT INPUT
AUDIO AUDIO
AUDIO AUDIO IN OUT
L R L R L R L R L
-5 -6 -3 -4 -1
J2001 J2052
(2/2) (2/2)
TM301
FM/AM TUNER UNIT
L-CH
FM 75Ω
COAXIAL
41 2ND_ROOM_RY
R-CH
R-CH
STEREO 28 TUNER_STEREO
ANTENNA
TUNED 29 TUNER_AUTO_STOP
30
MUTING TUNER_MUTE
AM
CE 34 T.LAT
DO 31 TUNER_DO
TU+10V DATA 33 T.DATA
CLOCK
32 T.SERIAL_CLK
3.3V
22 WOOFER_RELAY
(STBY)
DE895
CENTER
SUB
WOOFER
J303
-1 -2 -3 -4 -5 -6 -1 -2 -3 -4
L R L R L R L R
FRONT SURROUND FRONT SURROUND
CENTER
MULTI CH IN 2
MULTI CH IN1
RELAY
DRIVER
Q300
J305 (2/2)
VIDEO 2 DVD TV/SAT
-3
L
2ND
AUDIO AUDIO AUDIO AUDIO
OUT
ZONE -4
IN OUT IN IN
R
R L R L R L R
-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
006_LAT 3 13 11
7.1_DAT 1 1 3
BUFFER
7.1_CLK 2 5 6
IC1142
011_LAT 4 9 8
116
VOL_IC.DATA
117
VOL_IC.CLK
VOL_IC.LAT 118
SYSTEM
16 15 14
CONTROL
IC1101 (1/4)
6.1L
27
6.1SL
24
6.1C
20
7.1IL
26
7.1SL
23
7.1L
19
SURR
DE895
7.1SW
BACK
10
6.1SW
9
J305
SURR BACK
(1/2) R-CH
L R
DE995
-5 -6
SUB
CENTER
WOOFER
DE995
J304
DE895 DE895
RY300
PRE AMP
IC300
1 3
R-CH
DIR
FUNCTION SELECT
DE995
IC401
61 21
DVDD
AUDIO
IN
18 4
AUDIO
SELECT
IC2560
COM
22 2
SEL
SW
80
L
SEL
18
MCU
20
I/F
19
SL
SEL
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
4 58 R-CH
SBL
52
SEL
R-CH
51
(SBR)
15 11 12 13 10
SBL OUT
SW OUT
DIGITAL
C
C OUT
SECTION
SL OUT
(Page 20)
L OUT
19 19
3.3V
MD/TAPE
REG +7V
Q652
OUT IN
L R L R
+7V +7V
-1 -2 -3 -4
J302
24 22
AVCC
63
R-CH 62
74
R-CH 73
6 L-CH
DIGITAL
A
SECTION
R-CH 7 R-CH
(Page 20)
46 FL-CH
R-CH
47 FR-CH
MUTE
Q541,591
40 SL-CH
R-CH 41 SR-CH
POWER
D
SECTION
MUTE
Q641,691 (Page 24)
35
C-CH
MUTE
Q441
SBL-CH
SBR-CH
34
MUTE
Q391
28
R-CH 29
MUTE
5 7
Q491,791
SUB WOOFER
RY351
AMP
Q410
IC604
DIGITAL
RELAY
B
SYSTEM MUTE DRIVER
SECTION
Q351
(Page 20)
• Signal path
: TUNER (FM/AM)
: VIDEO (AUDIO)
• R-ch is omitted due to
same as L-ch.
STR-DE895/DE995
J2551
SUB PRE
WOOFER OUT