Da Section - Sony SDP-EP70 Service Manual

SDP-EP70/EP90ES
4-2. BLOCK DIAGRAMS
– DA SECTION –
DIGITAL 1
DIGITAL DIGITAL AUDIO
INPUT SELECTOR INTERFACE RECEIVER
IC306 IC302
DIN2
OUT 3 5 7
2
D1
Y
1
DIN1
DIGITAL 2
DIGITAL
INPUT
IC305
INPUT
OUT 3 4
D2
DIGITAL 3
DIGITAL
INPUT
IC304
OUT 3 3
D3
DOLBY
AC-3
SECTION
C
DAO 6
D0
A0 A1
(Page 20)
14 2
DSELA0
D
DSELA1
CONTROL
SECTION
3
J301 2
(Page 23)
INPUT 4
BUFFER
IC307
DIRCLK 14 SCLK
DIRLAT 15 XLAT
DIWDAT SWDT
16
E
DIRDAT 17 SRDT
DIRERR 24
EROR
CONTROL
SECTION
DIRRST 10 XMODE
(Page 23)
ANADIG
EXTAL
SRCINI
ATT
DF-DAT
SHIFT
DF-CLK
LATCH
DF-LAT
INIT
DF-INI
ST
DA-LAT
CK
DA-CLK
DT
DA-DAT
F
F. 8DB
CONTROL
R. 8DB
SECTION
C/S.8DB
(Page 24)
F. 4DB
R. 4DB
C/S. 4DB
MUT
09 RY-OFF
(Page 23)
CONTROL
SELECTOR
SECTION
IC404
IC301
(1/2) A
DATAO
23 10 B2 Y2 9 1
DATA
BCKO 2
LRCKO 3
3 1
VIN (Page 24)
E/D OUT
CONTROL
SECTION
DIGITAL
7
OUTPUT
B
IC303
REC OUT SOA
OUTPUT
SOB
SOC
CENTER
SUPER WOOFER
DATA
128FS
LRCK
BCK
J
DECODER
SECTION
(Page 21)
SELECTOR
IC404 (2/2)
AVOCK 11
BCK
LRCK 22 3 B0 Y0 4
LRCK
BCK 21 6 B1 Y1 7
128FS
FS128 20 13 Y2 12
B3
S A0 A1
1 2 5
– 17 –
SAMPLING RATE
CONVERTER DIGITAL FILTER, D/A CONVERTER
IC401 IC405
DATAI DATAI
DATAO
30 40
SAMPLING
LRCKI LRCKO
RATE LRCKI DIGITAL
32
39
FILTER
CONVERTER
BCKI BCKO BCKI
31 38
SAMPLING
FI128
MODE
RATE
COUNTER
XI
FLAME 512FSO CLOCK
13 45
COUNTER GENERATOR
10 10
FILTER
F404
IC425
8
9
13
BUFFER
2
IC408
12
1
1
2
13
FILTER
F401
12
10 11
49.152MHz
3
6 5
4
FILTER
9
F402
8
SAMPLING RATE
CONVERTER DIGITAL FILTER, D/A CONVERTER
IC403 IC407
DATAI DATAO DATAI
1 30 40
SAMPLING
LRCKI
LRCKO LRCKI
DIGITAL
RATE 32 39
2 CONVERTER
FILTER
BCKI
BCKO BCKI
CONVERTER
3 31
38
SAMPLING
FI128
MODE
7 RATE
COUNTER
XI 512FSO
FLAME CLOCK
13 45
COUNTER
GENERATOR
10
DIGITAL VOLUME
IC410
R1(+) IN1+
IO1-
+
21 25
4
R1(-) IN1- IO2+
D/A
23 24 5
ECL
R2(+) IO2-
CONVERTER IN2+ +
SW
18 27
2
IO1+
R2(-) IN2-
16 28 1
VOLUME
CONTROL
12
15
MUT
34 35 36 37 1
D/A
RY-OFF
CONVERTER
SHIFT
REGISTER
REAR L-CH
LEVEL
SHIFT
D/A
CONVERTER
IC421
1 3
2
MUT
RY-OFF
X401
CENTER
MUT
R1(+)
21
R1(-)
D/A
23 REAR RY-OFF
R2(+)
L-CH
18
R2(-)
16
XIN
10
34 35 36 37
•
R-CH, SUPER WOOFER is omitted.
• REAR L-CH and CENTER part was omitted.
(Same as FRONT L-CH)
• Signal path
– 18 –
IC416 IC602 IC607
L.P.F.
MIX
H.P.F. BUFFER
AMP
L.P.F.
RY608
RY607
5
3 5 J601
4
3
4
F
FRONT
1
L
1
RY610
RY609
8
J601
6 8
7 6
7
R
REAR OUT
1
PUT
L
1
RY612
RY611
8
6 8 J602
6
7
C CENTER
1
1
J603
F
FRONT
L
R
REAR BYPASS
L
C
CENTER
:Digital in
:Digital out
:RF (AC-3)