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Hitachi C43-FD2000 Service Manual page 46

Dp2m chassis, projection color television

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Video Chroma Circuit
Description
Cir# Pin Voltage (V)
Description
Cir# Pin
Voltage (V)
TB1274AF
I501
1
2.23
BA055FP-E2
I503
1
2
1.93
2
3
1.20
3
4
4.60
4
5
2.20
5
6
4.96
7
2.45
8
0.00
9
0.31
10
4.00
11
2.23
12
5.00
13
4.20
14
3.73
15
0.00
16
0.00
17
0.00
18
0.00
19
1.58
20
1.76
21
1.70
22
1.70
23
1.70
24
0.00
25
2.43
26
2.43
27
2.43
28
0.00
29
2.21
30
2.16
31
1.35
32
4.85
33
2.04
34
2.30
35
2.32
36
0.00
37
4.85
38
3.83
39
1.64
40
2.73
41
1.87
42
4.85
43
1.67
44
2.11
45
4.61
46
5.01
47
3.72
48
1.63
TB1274AF
I502
1
2.86
2
1.93
3
1.20
4
4.95
5
2.87
6
4.97
7
2.40
8
0.00
9
0.31
10
4.00
11
2.23
12
5.00
13
5.00
14
4.80
15
0.00
16
0.00
17
0.00
18
0.00
19
1.40
20
2.40
21
1.58
22
1.75
23
1.77
24
0.00
25
2.43
26
2.43
27
2.43
28
0.00
29
2.20
30
2.18
31
1.38
32
4.85
33
2.20
34
2.30
35
2.31
36
0.00
37
4.85
38
3.83
39
1.66
40
3.34
41
2.24
42
2.60
43
1.50
44
2.12
45
4.95
46
2.21
47
3.73
48
1.46
Teletext Circuit
Cir#
Pin
Voltage(V)
Description
Cir# Pin Voltage (V)
3.20
Q503
C
0.00
AT24C04
IT03
1
7.00
B
1.59
2
0.00
E
2.23
3
5.00
Q504
C
0.00
4
0.00
B
1.76
5
E
2.40
6
Q505
C
0.00
7
B
1.71
8
E
2.40
SAA5264
IT05
1
Q506
C
0.00
2
B
4.54
3
E
5.19
4
Q507
C
6.40
5
B
0.00
6
E
0.00
7
Q511
C
0.00
8
B
1.58
9
E
2.23
10
Q512
C
0.00
11
B
1.77
12
E
2.40
13
Q513
C
0.00
14
B
1.78
15
E
2.42
16
Q514
C
0.00
17
B
2.13
18
E
2.79
19
Q516
C
6.35
20
B
0.00
21
E
0.00
22
Q517
C
0.00
23
B
1.65
24
E
2.31
25
Q518
C
0.00
26
B
2.30
27
E
2.14
28
Q519
C
4.70
29
B
0.00
30
E
0.00
31
Q520
C
5.06
32
B
3.60
33
E
2.94
34
Q521
C
5.06
35
B
3.59
36
E
2.93
37
Q522
C
0.00
38
B
2.31
39
E
2.13
40
Q523
C
4.67
41
B
0.06
42
E
0.00
43
Q524
C
8.93
44
B
3.50
45
E
4.03
46
Q525
C
8.93
47
B
6.39
48
E
5.72
49
Q526
C
5.01
50
B
3.61
51
E
2.90
52
Q527
C
0.00
B
2.15
Cir# Pin
E
1.48
QT02
C
Q528
C
5.01
B
B
3.61
E
E
2.97
QT09
C
Q529
C
0.00
B
B
1.49
E
E
2.15
QT10
C
Q530
C
5.00
B
B
2.48
E
E
1.80
QT11
C
Q531
C
0.00
B
B
0.93
E
E
1.58
Q532
C
5.01
B
3.71
E
3.08
Q533
C
0.00
B
1.54
E
2.19
Q534
C
5.01
B
3.50
E
2.86
Q535
C
0.00
B
1.44
E
2.09
Q536
C
8.94
B
4.05
E
4.13
Q537
C
8.94
B
6.34
E
5.66
Headphone Amplifier Circuit
Focus Circuit
Description
Cir# Pin Voltage (V)
Cir#
Pin Voltage(V)
0.00
BA35BOFS
IA01
1
0.00
QF02
C
0.00
2
2.70
B
0.00
3
5.07
E
0.00
4
2.70
QF03
C
3.30
5
0.00
B
3.30
6
0.00
E
0.00
7
2.70
3.30
8
0.00
4.67
9
9.00
4.70
10
2.72
4.73
11
0.00
4.70
12
5.55
4.60
13
2.70
4.54
14
5.08
4.54
15
2.70
4.50
16
2.72
4.46
4.50
4.55
4.48
0.00
3.30
3.30
4.48
4.50
4.48
4.46
4.58
4.70
0.00
1.10
0.00
0.67
1.62
0.00
0.00
4.46
4.44
3.25
0.00
0.00
0.00
2.80
2.00
2.50
0.00
3.25
0.00
1.70
1.60
0.00
3.25
4.62
4.60
4.60
4.53
4.83
4.70
4.20
4.20
Voltage(V)
0.00
1.47
2.11
0.00
0.00
5.00
0.00
0.00
5.00
0.00
0.00
5.00
Sensor Distribution Circuit
Cir#
Pin Voltage(V)
10.70
QL10
C
0.40
11.20
B
4.70
643.00
E
0.00
3.00
QL11
C
0.40
3.50
B
4.70
8.90
E
0.00
QL12
C
0.40
B
4.70
E
0.00
QL13
C
0.40
B
4.70
E
0.00
QL14
C
0.40
B
4.70
E
0.00
QL15
C
0.40
B
4.70
E
0.00
QL16
C
0.40
B
4.70
E
0.00
QL17
C
0.40
B
4.70
E
0.00

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This manual is also suitable for:

C50-fd2000