Voltage And Waveform Measurement; Voltage Measurement - Panasonic SA-PM250EB Service Manual

15 Voltage and Waveform Measurement

15.1. Voltage Measurement

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
CD PLAY 3.3 0
STANDBY 3.3 0
REF NO.
MODE 21 22
CD PLAY 0 3.3
STANDBY 0 3.3
REF NO.
MODE 41 42
CD PLAY 0 0
STANDBY 0 0
REF NO.
MODE 1 2
POWER 5 5
STANDBY 5 5
REF NO.
MODE 1 2
POWER 0 3.3
STANDBY 0 3.3
REF NO.
MODE 1 2
POWER 9.3 0 16.7
STANDBY 9.3 0 16.7
REF NO.
MODE 1 2
POWER 3 0
STANDBY 3 0
REF NO.
MODE 1 2
POWER 16.7 0
STANDBY 16.7 0
REF NO.
MODE 1 2
CD PLAY 1.7 5.2
STANDBY 1.7 5.2
REF NO.
MODE 21 22
CD PLAY 1.5 0
STANDBY 1.5 0
3 4 5 6 7
1.7 1.7 0.9 0 3.3
1.7 1.7 0.9 0 3.3
23 24 25 26 27
3.3 13.3 8.4 16.7 0
3.3 13.3 8.4 16.7 0
43 44 45 46 47
3.3 3.3 3.3 3.3 1.7
3.3 3.3 3.3 3.3 1.7
3 4 5 6 7
3.3 1 0 0 0
3.3 1 0 0 0
3
5.3
5.3
3 4 5
2.5 2.9
2.5 2.9
3 4
1.6 3
1.6 3
3
5.0
5.0
3 4 5 6 7
2.9 1.7 2.9 0 0
2.9 1.7 2.9 0 0
23 24 25 26 27
1.8 5.2 5.2 1.7 1.7
1.8 5.2 5.2 1.7 1.7
IC400
8 9 10 11 12
3.3 3.3 3.3 0 1.5
3.3 3.3 3.3 0 1.5
IC400
28 29 30 31 32
0 13.3 8.4 8.4 13.3
0 13.3 8.4 8.4 13.3
IC400
48
1.7
1.7
IC1102
8
0
0
IC1103
IC1104
IC1106
IC1108
IC5001
8 9 10 11 12
5.3 0 0 2.8 2.6
5.3 0 0 2.8 2.6
IC5001
28 29 30
3.3 0 0
3.3 0 0
61
13 14 15 16 17
3.3 0 0 1.4 1.4
3.3 0 0 1.4 1.4
33 34 35 36 37
0 0 16.7 8.4 13.3
0 0 16.7 8.4 13.3
13 14 15 16 17
2.5 2.8 2.7 2.6 3.2
2.5 2.8 2.7 2.6 3.2
SA-PM250EG/EC/EF/EB/EE MAIN P.C.B.
18 19 20
0 1.1 3.3
0 1.1 3.3
38 39 40
5.6 0 0
5.6 0 0
18 19 20
2.1 5.2 2.9
2.1 5.2 2.9