HK CA280 - Harman Kardon Car Audio Service Manual (repair manual). Page 12

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1
2
3
4
5
6
A
B
C
D
6
5
4
3
2
1
D
C
B
A
Q7
TL431
R
37
2M
R
38
200K
R7
3K
R10
47K
R19
1K
R
24
6.8K
R
23
6.8K
R21
100K
R8
3K
R
12
10K
R
20
1K
R
18
10K
R34
22K
R
40
36K
R4
15K
Z
D1
5.6V
Z
D6
11V
+
C
20
47
/16V
+
C
34
100
/16
V
 NP
+
C
40
47
/16V
+
C
21
1
/25V
+
C2
22
/25V
+
C1
2.2
/50V
+
C4
22
/50V
D4
4148
D5
4148
D2
4148
D1
4148
D
10
4148
D6
4148
D7
4148
D9
4148
D8
4148
C
22
104
/C
C7
104
/C
C5
104
/C
C6
1
/50V
C
37
682P
1
2
3
J2
CON3
+
C
19
22
00
/2
5V
+
C
18
22
00
/2
5V
+
C
17
22
00
/25
V
L1
5uH
Q8
A56
+
C3
N
P
 22
/25
V
MUTE
-15V
Q5
4401
Q4
4401
Q3
4401
R
32
1.8K
R
33
5.1K
R
15
2.2K
R
29
100
R
39
56K
R
16
2.2K
R
17
2.2K
R
35
2.7K
R
13
1K
R
14
1K
R
31
1
0
K
1
2
3
4
5
6
7
8
T1
6/16 T37
Q9
IR
F
Z
46N
Q
11
IR
F
Z
46N
R
45
22
/1
Ws
R
41
100
R
42
100
C
33
104
/C
C
28
2200
/50V
C
29
2200
/50V
1
2
3
D11
1602CT
2
1
2
3
D12
1620CTA
C
32
104
/C
C
23
681
/C
+VCC
-VCC
+15V
-15V
Q
10
IR
F
Z
46N
R
43
100
R
44
100
Q
13
IR
F
Z
46N
C
31
2200
/50V
C
30
2200
/50V
ac1
C
35
100
/16V
C
36
100
/16V
C
14
104
/C
C
16
104
/C
R47
100/1Ws
R46
100/1Ws
Q12
TIP41
Q14
TIP42
R48
3K
R49
3K
Z
D4
15V
Z
D5
15V
C24
331/C
C25
331/C
C27
331/C
C26
331/C
P
R
O
TE
CT
R5
15K
R2
12K
R3
20K
R6
24K
R11
47K
R
22
100K
PROTECT
DC
2
3
1
IC2A
LM358
6
5
7
IC2B
LM358
8
4
IC2C
LM358
R1
4.7K
R
T
H1
10K
Q2
4403
12V
R
51
3.3K
R
50
5.6K
R
36
2.7K
LE
D1
R
LED
LE
D2
B
LED
ac1
D3
4148
R
25
100
C8
104
/C
1
2
J1
2P
D
14
4148
R
55
56K
R53
2.2K
R
54
10K
R
52
10K
Q
16
IR
F
Z
46N
Q
15
IR
F
Z
46N
R
56
100
R
57
100
d
ia
gno
stic
12V
12V
Q1
4403
12V
Q6
B772
C
15
104
/C
D
15
5402
Z
D7
3V
+
C
41
100
/16V
D17
4148
REM
GND
GENDWIRE
8
4
IC3C
LM358
R
LED
C
47
104
/C
C
48
104
/C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TL
494
IC1
TL494
Q19
4403
Q20
4403
R9
1K
Q22
4401
RJ45GND
R
26
10K
Z
D2
5.6V
+12VB
+12VB
+12VB
Q21
4401
R27
100
1
1
2
2
F1
20A
F2
20A
J6 BOX
1
2
3
4
J3
4P
OUT1
LOUT
OUT2
ROUT
R
158
100K
R
258
100K
DC
2
3
1
IC3A
LM358
6
5
7
IC3B
LM358
R
65
1.8K
R
67
18.7K
R
63
10.5K
R
64
10K
R
66
4.3K
C
45
104P
C
46
104P
Z
D8
5.6V
D18
4148
D19
4148
R
LED
12V
12V
R
68
3.3K
CA280
harman/kardon
2007-10-15
DWG NO:
TITLE:
DRAWN BY:
CHECKED:
APPOVED:
DATE:
DATE:
DATE:
VER:
SHEET:
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