Sony HCD-EC50 Service Manual ▷ View online
25
25
HCD-EC50
HCD-EC50
6-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) —
D111
D113
R106
R103
R119
R120
R181
R182
R151
R152
R104
R105
R101
R154
R156
R158
R159
R157
D156
R171
R170
R162
R127
R128
R129
R132
R133
R124
R142
R163
R174
R175
R176
R113
R114
D132
Q133
R184
R183
R107
R118
R117
R111
R112
R178
R179
R180
Q102
Q151
Q153
Q152
R155
L102
L101
IC101
D131
D154
RY131
Q135
Q137
Q138
Q121
Q122
Q134
W172
Q154
Q131
Q132
C181
C183
C182
C184
C132
C133
C134
C114
C116
C121
C118
C119
C139
C101
C102
D110
D109
D108
D107
C112
R130
R116
R131
C131
R115
R172
R153
C151
R160
C153
C152
R161
R177
R168
R169
R167
R166
R164
R165
C156
C155
C111
R123
R121
R125
C142
C141
C140
L106
L105
C106
C105
J101
R200
R186
R185
R199
C113
R110
R109
JR105
R108
JR103
JR101
WH171
CNP171
WH203
WH103
L104
L103
J102
J105
EP102
CNP202
CNP201
CNP151
10EDB40
10EDB40
22k
47k
47
47
10
10
4.7k
4.7k
47k
47k
2.2k
220k
10k
10k
10k
2.2k
MC2836
10k
10k
100
47
1/4W
47
1/4W
47
1/4W
4.7k
4.7k
100
100k
10k
100
47k
47k
100
100
MC2836
RT1P441C
10
10
22k
100 1/4W
100
1/4W
100
100
4.7k
0
0
2SC3052F
2SC3052F
2SC3052F
2SA1235F
47k
TA7809S
10EDB40
MC2838
RELAY
12V
2SC3052F
2SC5938
2SC5938
2SC3052F
2SC3052F
RT1N441C
WIRE-EARTH
HP
2SA1235F
2SC5938
2SC5938
0.1
25V
25V
0.1
25V
25V
0.1
25V
25V
0.1
25V
25V
0.1
50V
0.01
0.01
0.1
0.022
0.47
0.1
0.1
0.1
2200
50V
2200
50V
1N5402
1N5402
1N5402
1N5402
2200
25V
4.7k
100 1/4W
47k
0.022
100 1/4W
10k
220k
100
16V
16V
2.2k
0.1
0.1
2.2k
4.7k
10k
10k
10k
22k
22k
10k
0.1
25V
0.1
25V
100
16V
16V
470k
220k
22k
0.01
0.01
0.1
0
0
0.1
50V
0.1
50V
100
1/4W
100
1/4W
100
1/4W
100
1/4W
1000 25V
2.2
2.2
0
2.2k
0
0
8P
8P
3P
3P
BLM21A102
BLM21A102
EARTH PLATE
5P
5P
8P
26
26
HCD-EC50
HCD-EC50
6-9. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) —
•
See page 17 for Waveforms.
•
See page 32 for IC Block Diagram.
R843
Q801
R805
R807
R808
R809
R822
R827
R833
R836
R840
R842
R848
R853
R863
R813
JW803
JW806
JW804
R814
JW802
JW805
R830
R835
R846
Q802
R811
R851
R812
R815
R837
R838
R860
R829
R816
CNP802
R859
R844
R845
R852
R855
D812
D813
D814
D803
C824
X801
C825
C823
R818
C807
C821
C822
C815
C834
C801
C839
R841
R834
R820
C826
C828
C847
C848
C830
C829
CF803
C832
C831
C812
CF802
C813
C811
C802
L804
C806
D802
R804
C820
C817
R803
C804
R839
C809
C803
R850
L805
R802
R806
C819
L852
C855
C856
C854
D851
C851
C853
C852
R801
L851
JR801
C818
R832
C840
C816
C833
C810
C835
C836
C838
C827
R819
L803
JR803
L806
IC801
JW851
C841
R817
R849
C843
470k
2SC3052F
100k
100k
10k
1k
2.2k
100
10k
10k
22k
47k
1k
100k
22k
10k
100
47k
4.7k
2.2k
2SC3052F
4.7k
22k
470
4.7k
100k
10k
10
22
22
470k
1PS226
1PS226
1PS226
SVC230
18p
0.1
18p
47k
2200p
0.047
470p
100p
220
10V
10V
100
16V
0.1
100
22k
1k
100p
100p
0.01
0.01
450KHz
(X55)
0.47
0.47
0.1
SFELA10M7
JAA0-BO
220
10V
0.1
0.1
COIL4.5T
FM-RF
1000p
SVC230
0
1000p
0.1
10
0.1
100
0.1
0.01
2.2k
COIL3.5T
FM-LO
10
0
1000p
COIL-LO
AM
470p
5p
10p
SVC347A
0.047
0.022
10p
2.2k
COIL-RF AM
0
0
0.22
0.47
0.22
0.22
0.22
0.1
100p
10k
AM-IFT
0
FM-DET
23003
LV23003VA
22
50V
10k
22k
220p
4.7k
4.7k
4.7k
PLUG CONECTOR
2.5MM 3P
4.7k
75KHz
4700p
4700p
0
0.47
27
27
HCD-EC50
HCD-EC50
6-10. PRINTED WIRING BOARD — PANEL SECTION —
•
See page 17 for Circuit Boards Location.
:Uses unleaded solder.
IC703
IC701
MAIN BOARD
CNS111
(Page 23)
D
(BACK-LIGHT)
E
E
E
E
E
E
K
K
A
E
36
(LIQUID CRYSTAL DISPLAY)
1
1
1
9
10
2
3
E
E
E
E
E
E
E
E
E
E
E
E
K
A
A/K
B
A
C
27
1
2
26
1-868-529-
11
(11)
+
–
DISPLAY
FUNCTION
TUNER/BAND
ROTARY ENCODER
VOLUME
TUNING +
L M
TUNING –
l m
l m
CD u
1
STANDBY
DSGX
STOP
x
DISC 2
DISC 3
DISC 1
CD
MECHNISM
DECK
PLAY MODE
TUNING MODE
DISC SKIP/
EX-CHANGE
EQ
SW719 – 721
SW708 – 716,
SW701 – 706,
for
CHECK
PANEL BOARD
1
2
A
B
C
D
E
G
F
3
4
5
6
7
Q707
Q705
C705
R728
R759
R753
R786
R714
C702
C707
C724
C716
R784
R713
R750
R745
R747
R675
R674
R673
R679
R696
R697
R668
R695
R698
R678
C720
R689
R683
R685
R657
R681
R687
R686
R688
R684
R715
JW717
R769
JW702
R702
JW704
JW703
R760
R761
R764
R763
R692
R691
R694
R693
R667
R671
R670
R669
CNS671
C726
C725
R677
JW700
R672
R676
JW738
JW739
JW740
JW741
JW742
JW743
JW744
JW745
JW746
JW747
R722
C703
C704
C711
JW788
JW787
C701
JW786
Q701
R731
JW610
JW611
JW609
R767
JW789
R719
R787
JW607
C722
JW769
JR703
C742
C719
R788
D701
Q702
Q703
L702
D702
R711
Q704
R730
R721
LED701
Q706
JW606
R779
JW608
C731
JR701
X702
R755
R723
C706
JR702
LCD702
JW605
JW604
R768
JW600
R736
R777
R727
C715
JW603
JW602
JW601
R785
R718
SW705
SW714
R746
JW774
JW719
SW713
JW764
SW704
SW703
SW702
R743
JW735
Q669
Q671
Q666
Q665
SW710
R774
R773
C727
JR704
C671
Q668
SW708
Q667
SW719
JW730
JW701
JW732
R666
R665
JW731
JW734
JW733
JW749
JW748
JW754
JW753
JW760
JW759
JW758
JW757
JW756
JW755
SW712
SW716
R742
SW711
JW762
JW763
JW761
JW776
JW775
JW773
R744
C723
R754
R664
C728
R733
R738
R770
R739
R663
C729
R662
JW772
R765
C733
C739
C737
C738
C709
JW784
C712
R734
C730
R661
SW715
R762
R652
R653
R653
X701
C732
R651
C734
C735
C741
JW799
R757
JW795
JW794
C710
JW798
CN799
JW793
C743
R781
JW783
R726
JW771
JW782
L701
C713
R751
C717
C708
C718
C714
JW785
JW820
JW819
JW721
JW752
JW797
JW751
JW750
SW700
JW728
JW765
JW612
JW727
JW726
JW725
JW780
JW779
JW791
JW790
JW792
JW781
LED702
R748
JW778
JW777
JW770
SW701
JW769
JW768
JW767
JW766
JW724
JW723
JW800
JW722
JW720
R780
SW721
JW718
JW716
JW715
JW712
JW707
JW737
JW711
JW706
JW710
JW714
JW713
JW705
JW709
D703
Q664
Q662
C672
R682
R710
R725
R705
R704
R706
R703
R709
R724
R756
R776
R772
R758
R778
R771
R717
R707
R707
R716
R749
SW706
JW729
R712
R701
R708
R735
SW720
R775
R766
SW709
Q661
JW708
Q663
Q670
Q672
JW736
• Semiconductor
Location
Ref. No.
Location
D701
B-3
D702
B-3
D703
F-5
IC701
B-5
IC703
B-6
LED701
B-3
LED702
B-7
Q661
G-5
Q662
G-5
Q663
G-5
Q664
G-5
Q665
G-3
Q666
G-3
Q667
G-3
Q668
G-3
Q669
F-3
Q670
F-3
Q671
F-3
Q672
F-3
Q701
C-3
Q702
C-3
Q703
C-3
Q704
B-3
Q705
B-3
Q706
B-3
Q707
B-3
28
28
HCD-EC50
HCD-EC50
6-11. SCHEMATIC DIAGRAM — PANEL SECTION —
•
See page 17 for Waveforms.
•
See page 36 for IC Pin Function Description.
R767
Q707
R719
R718
R681
R683
R662
R652
R661
R651
R733
R770
R685
R689
R671
R668
R678
R667
R695
R696
R697
R698
R694
R693
R691
R692
R665
R666
R670
R669
Q664
Q663
Q706
Q703
Q702
R722
R713
R682
R657
Q704
R684
R688
R653
R736
R727
R664
R663
R
6
75
R
674
R
6
73
R
6
77
R
6
79
R
6
72
R
6
7
6
R768
R726
R734
R731
R738
IC703
LED701
R703
R704
R705
R706
R710
R712
R725
R742
R743
R744
R745
R746
R747
R750
R756
R762
R765
R773
R774
R775
R777
R780
R766
R769
R
7
6
0
R
7
61
R
7
63
R
7
6
4
JW700
R721
Q701
R
7
23
R786
R784
R779
R781
R709
R724
R778
R776
R771
R717
R758
R707
R735
R716
R708
R749
R715
R701
R702
R772
R686
D702
D703
C705
C
7
03
C702
L702
C704
C731
R755
C707
X701
C724
C713
C712
C
7
1
4
C
7
1
5
C
7
0
9
C
7
0
8
C
7
3
5
C723
C728
C729
C730
C739
C738
C737
C743
C742
C722
C
7
34
C
7
4
1
C710
JR704
C725
C726
C
72
7
C672
C671
C719
C
7
16
C
7
1
7
C7
1
8
R757
R754
R739
R748
SW702
SW703
SW704
SW706
SW709
SW710
SW719
SW721
SW701
SW705
SW711
SW712
SW713
SW714
SW715
SW716
SW708
SW720
C733
C732
C706
R751
Q672
Q671
Q669
Q670
Q668
Q667
Q665
Q666
Q662
Q661
R687
R728
L701
C711
R785
Q705
R753
R759
C720
R788
LCD702
SW700
D
70
1
R787
LED702
R711
C701
X702
IC701
CN799
JR703
R730
R714
CNS701
JR701
JR702
CNS671
220k
2SC3052F
1k
1k
22k
47k
47k
47k
47k
47k
47k
47k
22k
10k
47k
470
470
47k
47k
470
470
47k
470
47k
47k
470
47k
470
470
47k
2SA1235F
2SC3052F
2SC3052F
2SC3052F
2SC3052F
220k
10k
220k
470k
RT1N441C
2.2
2.2
47k
10k
10k
47k
47k
22
k
22
k
22
k
22
k
22
k
22
k
2
2
k
10k
100k
470
10k
10k
RPM7240-H18
SELU2B10A-S
(BACK-LIGHT)
4.7k
1k
1k
1k
4.7k
4.7k
1k
1k
1k
2.2k
2.2k
2.2k
2.2k
1k
1k
10k
4.7k
10k
22k
47k
470
47k
22k
4.7k
10
0
k
47
k
2
2
k
2
2
k
470
2SA1235F
2
.2
k
10
100k
100
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
470
4.7k
MC2836
1PS226
0.01
10
0
1
6V
0.01
0
470 10V
0.1
0
1000p
32768Hz
47p
47p
0.1
1
0
00
p
1
0
00
p
1
0
00
p
4
7
p
1
0
00
p
1000p
1000p
1000p
1000p
1000p
1000p
1000p
220p
220p
4700p
10
0
0
p
2
20
p
0.22
0
0.1
0.1
0
.1
0.1
22
50V
0.047
0
.1
1
0
00
p
1
0
00
p
100k
10k
10k
47k
22p
22p
0.1
100k
2SC3440F
2SA1365EF
2SA1365EF
2SC3440F
2SC3440F
2SA1365EF
2SA1365EF
2SC3440F
KTA1273Y
RT1N441C
4.7k
10k
0
0.1
10k
2SC3052F
100
100
0.1
0
U
D
ZS
T
E-1
73
.6B
47
L-34HD
22k
0.1
4.19MHz
MB90802
-108
10P
0
10k
10k
27P
0
0
13P
10k
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