Voltage Measurement And Waveform Chart; Voltage Measurement - Panasonic SB-WA935EE Service Manual

SB-WA935EE

7 Voltage Measurement and 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.
7.1.

Voltage Measurement

7.1.1. Power P.C.B.
Ref No.
MODE 1
CD PLAY 32.9 32.9
STANDBY 0
Ref No.
MODE 21
CD PLAY -67.9
STANDBY 0.3
Q501
Ref No.
MODE E
CD PLAY 0
STANDBY 0
Q511
Ref No.
MODE E
CD PLAY 5.2 33.9
STANDBY 0.3 -0.2
Q554
Ref No.
MODE E
CD PLAY 5.2
STANDBY 0.3
7.1.2. Amplifier P.C.B.
Ref No.
MODE 1
CD PLAY 68.0 -67.8
STANDBY 0.9 -0.3
Ref No.
MODE 21
CD PLAY 0
STANDBY 0
Q601
Ref No.
MODE E
CD PLAY 49.7 68.0
STANDBY 0.3
7.1.3. AC Inlet P.C.B.
Ref No.
Q515
MODE E
CD PLAY 0
STANDBY -0.1
2 3 4 5 6
68.0 -67.9 0 33.6 -33.6
0 15.1 0.3 0 -0.1
22 23 24 25 26
0 0 0 0 0
0 0 0 0 0
Q502
C B E C
4.9 0 0 4.9
0.6 0 0 0.6
Q512
C B E C
5.9 -11.2 -33.9 -11.8
-0.2 0.3 0
Q555
C B E C
- 4.7 4.8 5.2
0 0 0.4 0.3
2 3 4 5 6
0 33.7 -33.6 0
0 1.2 -0.7 0
22
0
0
Q602
C B E C
50.2 -50.7 -67.8 -51.4
0.9 0.9 -0.1 -0.3 -0.3
Q516
C B E C
0.1 0.8 0 3.5 -0.2
5.9 0 -0.1 3.2 -0.3
POWER P.C.B.
IC501
7 8 9 10 11 12
0 0 0 0 0
0 0 0 0 0 0
IC501
Q503
B 1 2 3
0 0 0 -0.7
0 0 0 0
Q520
B E C B
0 -0.8 0
0 0 0 0
Q556
B E C B
- 0 0.4 -0.2
0 0 0.3 0
AMPLIFIER P.C.B.
IC601
7 8 9 10 11 12
0 0 -12.3 0 0 -0.2
0 0 0.2 0 0 0
IC601
Q603
B E C B
0 50.3 0.5
0 0.9 0.3
AC INLET P.C.B.
Q517
B E C B
6.0 12.3 6.6
5.9 10.0 6.5
14
13 14 15 16 17
0 -0.2 33.9 -33.9 -10.5
0 0 -0.1 0 0
Q505 Q506
E C B E
0 0.8 0 0.8
0 -0.2 0 -0.2
Q552 Q553
E C B E
0 -11.2 0.2 -11.2
0 0.3 0 0.3
Q557
E C B
0.4 4.9 0
0.3 0.6 0
13 14 15 16 17
33.9 -33.9 -10.2 0 0 49.7
1.2 -0.6 0 0 0
Q519
E C B
0 0.8 0
-0.1 0 0
18 19 20
0 0 68.0
0 0 15.1
C B
0 0.8
0 -0.2
C B
5.1 -11.2
0.3 0.3
18 19 20
-50.8 0
0.5 0.1 0