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
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CD PLAY
32.9
32.9
68.0
-67.9
0
33.6
-33.6
0
0
0
0
0
0
-0.2
33.9
-33.9
-10.5
0
0
68.0
STANDBY
0
0
15.1
0.3
0
-0.1
0
0
0
0
0
0
0
0
-0.1
0
0
0
0
15.1
Ref No.
MODE
21
22
23
24
25
26
CD PLAY
-67.9
0
0
0
0
0
STANDBY
0.3
0
0
0
0
0
Ref No.
MODE
E
C
B
E
C
B
1
2
3
E
C
B
E
C
B
CD PLAY
0
4.9
0
0
4.9
0
0
0
-0.7
0
0.8
0
0.8
0
0.8
STANDBY
0
0.6
0
0
0.6
0
0
0
0
0
-0.2
0
-0.2
0
-0.2
Ref No.
MODE
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
CD PLAY
5.2
33.9
5.9
-11.2
-33.9
-11.8
0
-0.8
0
0
-11.2
0.2
-11.2
5.1
-11.2
STANDBY
0.3
-0.2
-0.2
0.3
0
0
0
0
0
0
0.3
0
0.3
0.3
0.3
Ref No.
MODE
E
C
B
E
C
B
E
C
B
E
C
B
CD PLAY
5.2
-
4.7
4.8
5.2
-
0
0.4
-0.2
0.4
4.9
0
STANDBY
0.3
0
0
0.4
0.3
0
0
0.3
0
0.3
0.6
0
Q501
Q511
POWER P.C.B.
IC501
IC501
Q502
Q505
Q506
Q557
Q554
Q555
Q520
Q552
Q503
Q512
Q553
Q556
7.1.2. Amplifier P.C.B.
Ref No.
MODE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CD PLAY
68.0
-67.8
0
33.7
-33.6
0
0
0
-12.3
0
0
-0.2
33.9
-33.9
-10.2
0
0
49.7
-50.8
0
STANDBY
0.9
-0.3
0
1.2
-0.7
0
0
0
0.2
0
0
0
1.2
-0.6
0
0
0
0.5
0.1
0
Ref No.
MODE
21
22
CD PLAY
0
0
STANDBY
0
0
Ref No.
MODE
E
C
B
E
C
B
E
C
B
CD PLAY
49.7
68.0
50.2
-50.7
-67.8
-51.4
0
50.3
0.5
STANDBY
0.3
0.9
0.9
-0.1
-0.3
-0.3
0
0.9
0.3
AMPLIFIER P.C.B.
IC601
IC601
Q601
Q602
Q603
7.1.3. AC Inlet P.C.B.
Ref No.
MODE
E
C
B
E
C
B
E
C
B
E
C
B
CD PLAY
0
0.1
0.8
0
3.5
-0.2
6.0
12.3
6.6
0
0.8
0
STANDBY
-0.1
5.9
0
-0.1
3.2
-0.3
5.9
10.0
6.5
-0.1
0
0
Q519
Q517
Q516
AC INLET P.C.B.
Q515
14
SB-WA935EE
