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Manuals
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Sony Manuals
Receiver
HCD-EA20
Service manual
Audio Section - Sony HCD-EA20 Service Manual
Cd/dvd receiver
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Q Q
– AUDIO SECTION –
3 7 6 3 1 5 1 5 0
VIDEO
F
SECTION
VIDEO
H
SECTION
• R-ch is omitted due
to same as L-ch.
• SIGNAL PATH
: AUDIO
: AUX IN
: TUNER
T E
L
1 3 9 4 2 2 9 6 5 1 3
J102 (2/2)
L
VIDEO
AUDIO IN
R-CH
R
J171
L
AUDIO IN
R
R-CH
FM/AM TUNER PACK
COAXIAL
FM ANT
L-CH
FM
75Ω
GND
R-CH
R-CH
AM ANT
AM
TUDI
GND
DI
TUDO
DO
TUCLK
CK
TCE
CE
TUNED
TUNED
Q291
FM-DET
DET AMP
w w w
AV SEL0 – AV SEL2
VIDEO
J
SECTION
.
http://www.xiaoyu163.com
IC302
D/A CONVERTER
DATA0
FL
31 DATA4
VOUT1
14
DATA1
45 DATA1
DATA2
46 DATA2
FR
DATA3
47 DATA3
13
VOUT2
LRCK-ZIVA
41 LRCK
BCK-ZIVA
40 BCK
XCK
38 SCKI
MDI
34 MDI
MC
35 MC
C
ML
VOUT5
10
36 ML
SL
12
VOUT3
SR
11
VOUT4
SW
VOUT6
9
DM-L
16
VOUT7
DM-R
VOUT8
20
Q121
ATT
IC121
AUDIO INPUT
SELECTOR
IC352
A/D CONVERTER
2 Y2
IC101
4 Y3
Y
3
1 VINL
DOUT
15
AMP
Q103
5 Y1
AMP
BCK
14
A B
LRCK
13
10 9
R-CH
5 VINR
SYSCK
16
Q123
Q122
RDSD
RDATA
2
4
MUX
RDSC
RCLK
16
XI
XO
IC291
13
14
RDS DECODER
X291
4.332MHz
x
a o
u 1 6 3
y
i
http://www.xiaoyu163.com
8
IC522
ELECTRONIC
IC521
VOLUME
LPF
5
7
FL
1 VIN1
3
1
FR
8
VIN2
4 5
DATA3
CLK
IC552
ELECTRONIC
IC551
VOLUME
LPF
C
5
7
1 VIN1
SL
3
1
8
VIN2
4 5
DATA2
CLK
IC502
ELECTRONIC
IC501
VOLUME
LPF
SR
5
7
1 VIN1
SW
3
1
8
VIN2
4 5
DATA1
CLK
Q
Q
3
7
6
3
1
IC111
LOW-PASS
FILTER
ADC_DATA
BCK
LRCK
XCK
31
39 40 41 42
TUDI
82 PLL_DO
TUDO
84 PLL_DI
TUCLK
81 PLL_CLK
TCE
83 PLL_CE
TUNED
80 TUNED
RDSD
61 RDS_DATA
RDSC
60 RDS_CLK
SYSTEM CONTROLLER
AV SEL0
76 AV SEL0
c o
AV SEL1
77 AV SEL1
AV SEL2
78 AV SEL2
AV SEL3
.
79 AV SEL3
31
31
2
4
9
9
8
VO1
2
7
VO2
Q521, 522
MUTING
2
VO1
VO2
7
Q551, 552
MUTING
VO1
2
7
VO2
Q511, 512
MUTING
5
1
5
0
8
9
2
4
9
Q112, 212
MUTING
ADC_DATA, BCK, LRCK, XCK
Q507
Q972
MUTING
MUTING
CONTROL
CONTROL
69
34
m
IC501 (1/3)
HCD-EA20
2
9
9
FL
FR
C
AMP
K
SECTION
SL
SR
SW
8
2
9
9
L
J101 (2/2)
VIDEO
AUDIO OUT
R
VIDEO
E
SECTION
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