Appendix Information Of Schematic Diagram; Voltage Measurement & Waveform Chart - Panasonic SC-NA30GN Service Manual

Wireless speaker system
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15 Appendix Information of Schematic Diagram

15.1. Voltage Measurement & Waveform Chart
Note:
• Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
• Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point because it
may differ from actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
15.1.1. MAIN P.C.B. (1/3)
REF NO.
MODE
1
2
POWER ON
3.3
3.3
STANDBY
3.3
3.3
REF NO.
MODE
21
22
POWER ON
3.3
0
STANDBY
3.3
0
REF NO.
MODE
41
42
POWER ON
3.3
0
STANDBY
3.3
0
REF NO.
MODE
61
62
POWER ON
1.7
3.3
STANDBY
1.7
3.3
REF NO.
MODE
1
2
POWER ON
0
0
STANDBY
0
0
REF NO.
MODE
1
2
POWER ON
0
3.3
STANDBY
0
3.3
REF NO.
MODE
1
2
POWER ON 1.77
0
STANDBY
1.77
0
REF NO.
MODE
21
22
POWER ON
3.2
3.3
STANDBY
3.2
3.3
REF NO.
MODE
41
42
POWER ON
1.6
0
STANDBY
1.6
0
REF NO.
MODE
1
2
POWER ON
3.4
0
STANDBY
3.4
0
3
4
5
6
7
0
3.3
3.3
3.3
3.3
0
3.3
3.3
3.3
3.3
23
24
25
26
27
0
3.3
0
3.3
3.3
0
3.3
0
3.3
3.3
43
44
45
46
47
0
3.3
0
0
3.3
0
3.3
0
0
3.3
63
64
3.3
0
3.3
0
3
4
5
6
7
0
0
3.3
3.3
3.3
0
0
3.3
3.3
3.3
3
4
5
6
7
3.3
0
0
3.3
0.3
3.3
0
0
3.3
0.3
3
4
5
6
7
0
0
0
1.2
0
0
0
0
1.2
0
23
24
25
26
27
3.3
0
0.8
11.9
2.0
3.3
0
0.8
11.9
2.0
43
44
45
46
47
0
1.6
1.6
0
0.6
0
1.6
1.6
0
0.6
3
4
5
6
7
0
0
1.6
0.6
1.6
0
0
1.6
0.6
1.6
IC1001
8
9
10
11
12
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
IC1001
28
29
30
31
32
0
0
0
0
0
0
0
0
0
0
IC1001
48
49
50
51
52
0
0
0
1.4
1.4
0
0
0
1.4
1.4
IC1001
IC1002
8
3.3
3.3
IC1004
8
0
0
IC1401
8
9
10
11
12
1.4
1.6
1.7
3.0
0
1.4
1.6
1.7
3.0
0
IC1401
28
29
30
31
32
0
2.0
2.0
2.0
2.2
0
2.0
2.0
2.0
2.2
IC1401
48
1.6
1.6
IC1402
8
9
10
11
12
1.6
11.8
1.3
0
0
1.6
11.8
1.3
0
0
57
13
14
15
16
17
3.3
3.3
3.3
0
1.8
3.3
3.3
3.3
0
1.8
33
34
35
36
37
3.3
3.3
3.3
3.3
2.1
3.3
3.3
3.3
3.3
2.1
53
54
55
56
57
1.4
3.3
0
0
3.3
1.4
3.3
0
0
3.3
13
14
15
16
17
0
1.5
3.3
2.5
3.3
0
1.5
3.3
2.5
3.3
33
34
35
36
37
0
2.2
2.2
0.8
0
0
2.2
2.2
0.8
0
13
14
15
16
17
0
0
1.3
0.2
3.3
0
0
1.3
0.2
3.3
SC-NA30P/PC/GN MAIN P.C.B.
18
19
20
3.3
3.3
3.3
3.3
3.3
3.3
38
39
40
2.1
0.1
3.3
2.1
0.1
3.3
58
59
60
3.3
0
3.3
3.3
0
3.3
18
19
20
1.9
0
14
1.9
0
14
38
39
40
0
3.4
0
0
3.4
0
18
19
20
3.3
3.3
1.1
3.3
3.3
1.1

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