Table of Contents
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Q Q
3 7 6 3 1 5 1 5 0
7-5.
PRINTED WIRING BOARD - MAIN Board -
1
2
(EC78)
HI AMP
E
BOARD
CN151
MAIN BOARD
(Page 30)
A
D806
CN801
ANTENNA
FM/AM
D805
B
FL803
JW682
C848
T801
C
(EC78)
TB601
L
C603
CF801
L601
SPEAKER
D
HIGH FREQ.
IMPEDANCE
R606
USE 8Ω
JW650
R607
T E
L
1 3 9 4 2 2 9 6 5 1 3
C606
R608
R
L602
JW652
E
JW651
R631
JW662
D601
R639
F
R609
R640
JW654
TB602
R611
L
R610
L603
C609
(EC68)
JW659
SPEAKER
G
IMPEDANCE
USE 6Ω
JW653
JW660
SPEAKER
LOW FREQ.
C610
IMPEDANCE
R612
USE 8Ω
L604
R
(EC78)
H
ET601
w w w
(CHASSIS)
I
HCD-EC68/EC78
• See page 23 for Circuit Boards Location.
3
4
5
M
M601
(FAN)
1
3
JW744
L805
R847
R804
JW743
R801
R831
D802
R803
R810
JW742
R826
R806
C803
JW740
R822
C802
R841
JW741
R827
D803
C838
R811
C840
R807
D804
D801
C837
R838
R843
R812
R837
R809
C823
B E
Q802
C834
L803
B E
TP690
R824
C836
C819
C826
R840
C820
R825
C841
Q801
L804
C835
JW735
C847
C828
C824
R846
L801
R823
R842
JW802
C846
JW737
C806
JW736
JW739
C827
R813
JW733
R829
C821
JW738
R839
C805
R814
R819
C822
C844
R818
JW647
JW729
R805
R817
C804
JW731
R844
JW732
JW728
36
19
IC801
C809
18
C808
1
C807
JR613
X801
R845
JW726
R816
R815
C811
JW804
JW721
C810
R832
C845
JR601
C843
C817
R820
C815
JW730
JW801
JR602
FL801
R821
JW724
R830
C816
JW734
R836
L802
C814
JW725
C830
JW723
C832
JW750
R726
R724
C829
JW751 JW752
JW722
C831
JW803
C833
R725
Q601
CN601
R626
Q602
D622
R629
C850
B E
3
1
C613
C614
JW655
JW779
R603
R627
D621
R630
JW656
R601
R605
Q603
R604
B E
JW649
C602
C605
C601
JR615
C604
D605
CN632
5
1
JW677
R692
C696
JW760
JW781
R634
JW720
C615
R633
D603
R662
R635
RY601
C616
R632
D791
JW663
JW669
R636
R658
JW672
R792
R791
JW657
D610
JW708
JW719
CN633
JW658
R727
R650
R651
D608
JW661
JW673
R728
JW666
(EC78:AEP,RU)
C617
C678
R648
RY602
D604
R638
C618
C626
C607
R641
R649
EC68/EC78:E2,
D607
E3,E51,MX,AR
R642
JW665
C608
R647
B E
Q604
R615
R643
EC68/EC78:E2,
C620
E3,E51,MX,AR
R645
D609
C622
JW684
C677
(EC78:AEP,RU)
C627
C628
JW667
JW670
LOW AMP
RY601,RY602
G
BOARD
CN104
x
a o
(Page 31)
y
.
i
http://www.xiaoyu163.com
•
: Uses unleaded solder.
6
7
8
(EC78)
HI AMP
(Page 31)
F
H
LOW AMP
BOARD
BOARD
CN152
CN102
(Page 30)
(EXCEPT EC68:UK)
(EC68:UK)
R802
JW607
C652
R701
JW608
C657
JR605
CN602
C658
JR606
R702
R704
R808
JW609
R695
R683
C647
C648
R700
C654
R694
C636
R682
C655
C646
JW606
JW605
C635
C649
R696
JR607
R667
C645
C644
C656
R697
C639
C650
R709
C665
C643
JR608
Q608
D614
JW611
JW610
R787
C666
C651
JW613
B E
C640
C700
CN603
R708
R788
C653
(EXCEPT EC68:UK)
14
1
IC602
R666
R681
28
R684
15
JW619
C667
C637
C633
R731
JW787
C638
C634
C662
R732
JW621
TP619
R751
C684
C788
JW612
JR610
R749
R715
R752
C663
C685
C659
R754
C674
JW625
C789
R750
C713
JR609
JW640
C660
R753
R707
C664
C687
C661
C630
C686
R706
R672
JW630
JW674
JW627
JW628
JW620
R676
JW629
R673
JW631
JW703
R677
C675
C676
JW641
JW632
JW678
JW706
C641
C632
JR614
R729
R689
JW702
R670
JR618
Q618
JW773
R687
B E
C694
R637
D617
Q611
R678
C693
B E
JW769
R685
B E
JW783
Q612
JW784
R690
R686
C629
JW701
JW768
C619
D628
JW705
JW675
R669
JW771
R628
JW685
D615
JR611
JW767
Q
Q
B E
B E
JW718
JW782
3
7
6
D618
R716
Q606
Q605
Q622
JW717
R652
E
B
R646
R720
R614
R719
JW775
C695
R613
C669
JW765
R718
D606
R722
R717
D631
JW764
CN608
JW711
C704
2
D602
1
Q624
JW780
D619
C612
D620
R619
JW777
C631
JW710
JW774
R621
JW770
C611
R625
JW704
C680
R620
JW712
1
3
JW766
C682
C621
JW715
JW762
JW761
JW716
R617
JR612
JW690
R622
R623
JW683
CN604
JR617
JR616
C642
JW763
JW689
Q619
R691
B E
(EC68)
D629
D630
C623
JW686
JW639
D611 D612
ET602
(EC78)
REG
D
BOARD
W610
PT
J
(Page 34)
BOARD
(CHASSIS)
CN051
u 1 6 3
(Page 35)
27
27
2
4
8
9
9
• Semiconductor
Location
9
Ref. No. Location
D601
E-2
D602
E-6
D603
E-3
D604
G-3
JW601
D605
D-5
JR603
D606
E-6
JR604
JW604
(EXCEPT EC68:UK)
D607
G-5
D608
F-5
R679
JW602
D609
G-5
E
B
E
B
D610
F-5
JW603
Q616
Q617
R680
D611
H-6
(Page
D612
H-6
26)
JW615
D614
B-6
K
D615
D-7
CN606
JW616
D617
D-6
DECK
BOARD
D618
E-6
D619
E-6
JW617
D620
E-7
JW618
D621
D-5
JW624
D622
D-5
JW622
JW626
D628
D-7
TP657
(SUFFIX-12)
D629
H-6
R660
L1
D630
H-6
JW623
PANEL
D631
E-7
BOARD
D791
E-5
CN304
(Page 32)
C714
D801
B-3
D802
A-4
L2
D803
B-4
JW633
PANEL
D804
B-3
JW634
BOARD
D805
B-2
CN304
JW785
JW635
(Page 32)
JW786
D806
A-2
(SUFFIX-13)
JW636
IC602
B-7
3
1
JW637
5
1
5
0
8
9
IC801
C-4
JW638
Q601
D-4
JW697
Q602
D-5
JW713
Q603
D-5
Q604
G-3
20
21
Q605
D-6
C689
Q606
D-5
C673
C691
Q608
B-6
M
C703
Q611
D-5
JW709
C671
Q612
D-6
CD BOARD
CN201
Q616
B-9
(Page 24)
CN605
Q617
B-9
Q618
D-7
JW680
R675
R674
Q619
G-6
C
Q622
E-6
JW681
JACK
R663
Q624
E-7
BOARD
(Page 34)
Q801
B-5
JW664
Q802
B-5
JW679
JW676
JW668
JW699
12, 13
R644
JW700
1-875-488-
(12, 13)
m
c o
.
Note: Refer to "SUFFIX-12/SUFFIX-13 DISCRIMINATION
OF PANEL BOARD" (page 3) of the servicing notes
for suffi x-12 and suffi x-13.
HCD-EC68/EC78
2
8
9
9
2
4
9
8
2
9
9
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