6-10. Schematic Diagram - 2Ch-4Ch Amp Board - Sony HCD-EC69i Service Manual
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HCD-EC69i/EC79i/EC99i
Q Q
3 7 6 3 1 5 1 5 0
6-10. SCHEMATIC DIAGRAM - 2CH-4CH AMP Board -
1
2
3
2CH-4CH AMP BOARD
A
(EC99i)
IC103
STK433-090-E
1
2
3
4
5
IC103
POWER AMP
B
C
D
(EC79i)
R153
22k
R155
D152
2.2k
MC2838-T112-1
T E
L
1 3 9 4 2 2 9 6 5 1 3
E
R154
22k
R156
2.2k
R143
22k
F
R145
D141
2.2k
MC2838-T112-1
R144
22k
R146
2.2k
G
(EC79i)
CN101
7P
TP107
H
HI-OUT-L
7
TP106
LOW-L/SW-OUT
6
TP105
MAIN
-VH
5
BOARD
TP104
+VH
4
(1/2)
TP103
CN632
LOW-R/SW-OUT
3
(Page
TP102
HI-OUT-R
2
30)
TP101
JW109
H
PA-GND
1
(EC69i/EC99i)
CN102
5P
MA2J1110GLS0
LOW-OUT-L
5
J
-VH
4
+VH
3
MAIN
BOARD
I
LOW-OUT-R
2
(1/2)
CN633
PA-GND
1
(Page 30)
w w w
HCD-EC69i/EC79i/EC99i
4
5
6
(EC79i)
IC101
STK433-890-E
+PRE SUB GND
6
7
8
9
10
11
12
13
14
15
1
2
IC101
POWER AMP
R151
1.2k
-0.8
0
C151
0.1
Q151
0
2SA2026
R152
1.2k
-0.8
0
C152
0.1
Q152
0
2SA2026
R141
1.2k
-0.8
0
C141
0.1
Q141
0
2SA2026
R142
1.2k
-0.8
0
C142
0.1
Q142
0
2SA2026
Q141, 142, 151, 152
OVER LOAD DETECT
R160
220
R162
220
R164
220
R166
220
C160
0.1
∗C162, 163
D140
C164
100 50V (EC69i)
0.1
220 63V (EC79i)
100 63V (EC99i)
C167
C162
∗
10
63V
x
a o
.
i
http://www.xiaoyu163.com
7
8
9
+PRE SUB GND
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
R111
R112
C105
C106
C125
C126
0.22
0.22
100p
100p
100p
100p
2W
2W
R109
470
Q
Q
3
7
C107
3p
R113
47k
R114
R135
47k
1.5k
C108
R116
3p
1.5k
R136
R115
1.5k
1.5k
C129
1
50V
C109
C110
C130
47
47
1
25V
25V
50V
R119
C111
100
4700p
C103
C104
C123
C124
470p
470p
470p
470p
R161
220
R127
R128
R107
R108
R163
47k
47k
47k
47k
220
C101
C102
C121
1
R165
1
1
50V
50V
50V
220
(EC79i)
R105
R106
R125
R126
R167
∗R105, 106
∗
∗
4.7k
4.7k
220
2.2k (EC69i)
4.7k (EC79i/EC99i)
R123
R103
R104
C161
∗
820
∗
0.1
C165
R120
C119
0.1
1k
0.01
∗R103, 104
2.2k (EC69i)
820 (EC79i)
C166
C163
1.2k (EC99i)
10
(EC79i)
∗
63V
u 1 6 3
y
34
34
2
4
8
9
9
10
11
12
13
(EC69i)
IC102
STK433-040
+PRE SUB GND
20
21
22
23
1
2
3
4
5
6
7
8
IC102
POWER AMP
R131
R132
0.22
0.22
2W
2W
6
3
1
5
1
5
0
8
9
C127
3p
JW110
R133
47k
R134
47k
C128
3p
C122
1
50V
R124
820
C120
C112
0.01
0.1
m
c o
.
2
8
9
9
14
15
9
10
11
12
13
14
15
2
4
9
8
2
9
9
CN100
5P
TP112
5
IN-R
K
TP111
4
A-GND
TP110
3
IN-L
MAIN
TP109
BOARD
2
AMP-STBY
(1/2)
TP108
1
OVERLOAD
CN603
(Page 30)
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