Sony HCD-EC68P Service Manual - Page 33

Schematic, Diagram, Main

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6-8. SCHEMATIC DIAGRAM - MAIN Section (3/3) - • See page 42 for IC Block Diagrams. 1 2 3 4 5 6 7 8 MAIN BOARD (3/3) A IC B/D 12345 IC701 +5V REGULATOR IC701 IC BD9701CP-V5 18 VCC 5.1 OUT GND 1 INV 3.2 STBY B 36 7 MAIN BOARD (1/3) (Page 31) JW788 R759 47 R769 47 C787 1 C786 1 5V-ON/TP-REC-MUTE DMP-R DMP-L R775 22k R772 22k R771 22k C771 1 50V C772 1 50V 2 4 5 MAIN BOARD (2/3) (Page 32) 4.3 V- 4.3 4.3 8.6 C V+ 8765 +- IC770 CN609 11P 1 PGND R781 33k R779 4.7k R777 22k R767 0.47 R768 10k LINE AMP IC770 TP706 2 VBUS(5V) 2W NJM4558V-TE2 3 VBUS(5V) -+ DMP-RXD 4 DMP-RXD R761 4.7k R762 33k D701 RK36LF-A4 D L701 100uH Q761 ISA1235AC1TP-1EF 5.1 4.3 4.3 1234 4.3 DMP-TXD DMP-DET/USB-RST DMP-5V-DET 5 DMP-TXD 6 DMP-DET 7 DGND TP712 5 0 Q761, 762 VOLTAGE DETECT R773 22k C773 1 50V R783 100k TP713 TP714 TP715 8 L+ 9 L10 R+ 11 R- C762 100 10V R782 56k C776 22 25V 3.2 0 R776 22k R778 22k R774 22k C774 1 50V R785 100k R770 0 E C760 100 25V C761 470 16V R763 1k Q762 DTC114EKA C775 47 10V R780 4.7k C791 0.01 R786 100k R784 100k HCD-EC68P/EC78P 9 10 11 12 DMP BOARD CN902 11P R- 11 R+ 10 L- 9 L+ 8 DGND 7 DMP-DET 6 DMP-TXD 5 DMP-RXD 4 VBUS(5V) 3 VBUS(5V) 2 PGND 1 R906 0 R905 0 R904 0 R908 0 R907 0 CN901 18P DMPORT TP913 TP912 TP911 TP910 TP909 TP908 TP907 TP906 TP905 TP904 TP903 TP902 18 VGND 17 VIDEO 16 WM TX 15 WM AX 14 R+ 13 L+ 12 R11 L10 NC 9 WM DET 8 DGND 7 DET 6 TXD 5 RXD 4 VBUS(5V) 3 NC 2 VBUS(5V) 1 PGND HCD-EC68P/EC78P 33 33

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HCD-EC68P/EC78P
HCD-EC68P/EC78P
33
33
IC B/D
(2/3)
BOARD
2
MAIN
3
BOARD
(1/3)
MAIN
18
5.1
1
3.2
5.1
5
0
0
3.2
8.6
4.3
4.3
4.3
4.3
4.3
4.3
100uH
L701
16V
470
C761
25V
100
C760
4.7k
R761
33k
R762
1k
R763
50V
1
C771
50V
1
C772
50V
1
C773
50V
1
C774
0.01
C791
10V
47
C775
25V
22
C776
4.7k
R779
4.7k
R780
TP706
TP712
TP713
TP714
TP715
1
C786
1
C787
33k
R781
56k
R782
1
2
3
4
5
6
7
8
9
10
11
11P
CN609
PGND
VBUS(5V)
VBUS(5V)
DMP-RXD
DMP-TXD
DMP-DET
DGND
L+
L-
R+
R-
8
7
6
5
4
3
2
1
NJM4558V-TE2
IC770
V-
V+
100k
R783
100k
R784
100k
R785
100k
R786
22k
R771
22k
R772
22k
R773
22k
R774
22k
R776
22k
R775
22k
R777
22k
R778
ISA1235AC1TP-1EF
Q761
10V
100
C762
DTC114EKA
Q762
R767
2W
0.47
47
R769
47
R759
RK36LF-A4
D701
10k
R768
1
2
3
4
5
IC BD9701CP-V5
IC701
VCC
OUT
GND
INV
STBY
R770
0
JW788
4
5
7
6
DMP-DET/USB-RST
DMP-TXD
DMP-RXD
DMP-L
5V-ON/TP-REC-MUTE
DMP-R
DMP-5V-DET
-
+
+
-
LINE AMP
IC770
IC701
+5V REGULATOR
VOLTAGE DETECT
Q761, 762
MAIN BOARD
(3/3)
7
11
D
B
6
9
10
5
3
1
12
C
E
8
4
A
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18P
CN901
PGND
VBUS(5V)
NC
VBUS(5V)
RXD
TXD
DET
DGND
WM DET
NC
L-
R-
L+
R+
WM AX
WM TX
VIDEO
VGND
TP902
TP903
TP904
TP905
TP906
TP907
TP908
TP909
TP910
TP911
TP912
TP913
0
R906
0
R905
0
R904
1
2
3
4
5
6
7
8
9
10
11
11P
CN902
PGND
VBUS(5V)
VBUS(5V)
DMP-RXD
DMP-TXD
DMP-DET
DGND
L+
L-
R+
R-
0
R908
0
R907
DMP BOARD
DMPORT
6-8.
SCHEMATIC
DIAGRAM
- MAIN Section (3/3) -
(Page 31)
• See page 42 for IC Block Diagrams.
(Page 32)