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6. Test point Waveforms
2.6Vpp
H
TDA9370 PIN38
95Vpp
H
CRT KR
1Vpp
V
TDA9370 PIN21
TDA9370 PIN22
7. IC voltages
TDA9370
PIN
1
2
3
V
0
3.8
3.6
PIN
17
18
19
V
4
0
4
PIN
33
34
35
V
0.5
0.3
0
PIN
49
50
51
V
1.9
5.0
2.4
TDA8357
PIN
1
2
V
0.8
0.7
AN 7522N
PIN
1
2
V
10
4.4
24C08/PCF8598
PIN
1
2
3
V
0
0
5.1
1.2Vpp
H
TDA9370 PIN40
TDA9370 PIN53
95Vpp
H
CRT KG
CRT KB
0.8Vpp
1.3Vpp
V
TDA9370 PIN59
4
5
6
3.3
3.5
4.4
20
21
22
0.5
0.7
0.8
36
37
38
1.7
2.4
3.4
52
53
54
2.4
2.4
3.1
3
4
5
6
16
6.9
0
43
3
4
5
0
4.4
2.75
4
5
6
0
3.2
0
3.8Vpp
2.5Vpp
H
H
TDA9370 PIN52
0.9Vpp
95Vpp
H
H
TDA9370 PIN33
7
8
9
10
5.1
1.8
0
0.18 0.17
23
24
25
26
1.9
1.9
3.9
3.8
39
40
41
42
8
3.9
0
3.3
55
56
57
58
0
3.2
0
1.8
7
8
7.2
0.3
6
7
8
1.4
0
1.4
7
8
0
5.1
10
2.5Vpp
H
TDA9370 PIN51
5Vpp
H
TDA9370 PIN34
11
12
13
14
0
2.3
8
27
28
29
30
1.6
3.2
2.3
0
43
44
45
46
0
3.6
1.4
2.5
59
60
61
62
1.7
0
3.2
5.1
9
7.2
9
10
11
0.35
4.4
0
15
16
5
3
31
32
2.3
0.2
47
48
2.5
2.5
63
64
3.3
5
12
4.4
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