Panasonic RR-US490PP / RR-US490E Service Manual ▷ View online
6 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.
and product itself.
6.1. Voltage Measurement
Ref No.
MODE
1
2
3
4
5
CD PLAY
0
0
0
0
0
Ref No.
MODE
1
2
3
4
5
CD PLAY
0
0
0
0
0.1
Ref No.
MODE
1
2
3
4
5
CD PLAY
3
0
0
0
0
Ref No.
MODE
1
2
3
4
5
6
7
8
CD PLAY
0
0
0
0
0
0
0
0
Ref No.
MODE
1
2
3
4
5
CD PLAY
0
3
3
3
3
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
0
0
0
0
0
1.5
0.2
1.2
0.7
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Ref No.
MODE
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CD PLAY
0.1
0.1
0.1
0.1
0.1
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
Ref No.
MODE
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
CD PLAY
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0.1
0.1
0
0.1
0.1
0
Ref No.
MODE
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CD PLAY
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1
0
0
0
0
0
0
0
0
0
Ref No.
MODE
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CD PLAY
0
0
0.2
0
0.4
0
0
0.1
0
0.3
0
0
0
0
0.1
0
0
-0.1
0.3
0
Ref No.
MODE
1
2
3
4
CD PLAY
0
0
0
0
IC101
IC101
IC101
IC201
IC4
IC5
IC101
IC101
IC1
IC2
IC3
17
RR-US490PP / RR-US490E
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
1.4
1.4
1.5
1.5
1
1.9
3
3
0
0
3
0
0
3
0
0
0.2
3
3
0.9
Ref No.
MODE
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CD PLAY
1.5
0
3
3
3
3
2.4
3
2.7
0
0.1
3
0
0
0
0
0
0.4
0
0.3
Ref No.
MODE
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
CD PLAY
3
0
0
0
0
0
0
0
2.9
2.8
2.7
0.1
3
0
1.5
1.5
0.3
0
0
0
Ref No.
MODE
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CD PLAY
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0
0
0
0
0
0
0
0
1.5
1.4
1.4
0
Ref No.
MODE
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CD PLAY
1.4
1.4
1.4
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
Ref No.
MODE
1
2
3
4
CD PLAY
3
3
0
0
Ref No.
MODE
1
2
3
4
5
6
7
8
CD PLAY
0
0
0
0
0
0
0
3
Ref No.
MODE
1
2
3
4
CD PLAY
2.9
3
0
0
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
0
0
0
0
0
0.1
0
0
0
0
0
0
0.1
0
0
0
0
0
3
0.1
Ref No.
MODE
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CD PLAY
0
0
0
0
0
0
0
0
3
3
3
3
0
0
0
0
3
0
0
0
Ref No.
MODE
41
42
43
44
45
46
47
48
CD PLAY
3
3
3
3
0
0
0
0
Ref No.
MODE
G
D
S
G
D
S
G
D
S
E
C
B
E
C
B
CD PLAY
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Ref No.
MODE
G
D
S
G
D
S
E
C
B
E
C
B
E
C
B
CD PLAY
0
0
0
0
0
0
0
0.1
0.1
3
0.3
3
3
0
2.5
Ref No.
MODE
G
D
S
E
C
B
E
C
B
E
C
B
E
C
B
CD PLAY
0
2.5
0
0
0
3
0
0
0
0
0
0
3
0
3
RR-US490PP/E MAIN P.C.B.
Q102
Q103
QR1
QR2
QR3
QR201
Q6
Q7
Q8
Q101
IC206
IC206
IC206
Q1
Q2
Q3
Q4
Q5
IC202
IC204
IC205
IC207
IC202
IC202
IC202
IC202
18
RR-US490PP / RR-US490E
6.2. Waveform Chart
IC101 PIN 6
PLAY
47.4Vp-p (10msec.div)
IC101 PIN 7
PLAY
48.4Vp-p (10msec.div)
IC202 PIN 17
PLAY
4.0Vp-p (10msec.div)
IC101 PIN 96
PLAY
31.6Vp-p (10msec.div)
IC202 PIN 18
PLAY
4.44 Vp-p (10msec.div)
IC202 PIN 20
PLAY
4.16Vp-p (10msec.div)
IC202 PIN 21
PLAY
7.52Vp-p (25msec.div)
19
RR-US490PP / RR-US490E
7 Wiring Connection Diagram
JK1
JK101
JK102
P101
S201
QUICK SEARCH DIAL
(ROTARY KNOB)
S204
QUICK SEARCH DIAL
(JOYSTICK)
SIDE A
SIDE B
M1
M2
1 2
ZOOM MIC
TO EXTERNAL MIC
EARPHONE
USB
MIC
MAIN P.C.B
MAIN P.C.B
PbF
PbF
20
RR-US490PP / RR-US490E
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