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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)
Summary of Contents for HCD-EC68P
Page 65: ...MEMO HCD EC68P EC78P 65 ...