Panasonic SJ-MD150 Servise Manual page 79

Mini disc deck
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SCHEMATIC DIAGRAM-8
:POSITIVE VOLTAGE LINE
4.9V
-27.6V
S
-27.6V
T
-27.6V
U
-28.5V
X
-28.5V
W
-28.5V
V
-27.7V
R
-27.7V
Q
-30.6V
A
B
C
C911
50V2.2
A
B
C
:NEGATIVE VOLTAGE LINE
P O
N M L K J I H G F E D C B
80
79
78
77
76
75
74
73
72
71
70
81
P67
82
P66
4V
83
P65
0V
84
P64
-32V
85
P63
T
7.2ms.
86
P62
87
P61
88
P60
89
-VP
90
P107/AN7
91
P106/AN6
4.9V
92
P105/AN5
4.9V
93
P104/AN4
94
P103/AN3
95
P102/AN2
96
P101/AN1
97
AV
SS
98
P100/AN0
F=10MHz
4.9V
99
VREF
4.9V
100
AV
CC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
2
X901
(10MHz)
A
B
C D E
4.8V
Q913
0V
10K
DTC114ESATP
10K
RESET
B
A
C D E F G I
4.9V
4.9V
-30.6V
CN901
20
19
18
17
16
15
14
13
12
11
10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
E
To
MAIN CIRCUIT(CN401) on SCHEMATIC DIAGRAM-9
A
Z
Y
X
W
V
U
T
S
R
Q
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
4V
0V
-32V
T
7.2ms.
IC901
M30218MAA102
SYSTEM CONTROL /
FL DRIVE
3V
2.4V
P-P
P-P
F=10MHz
1
3
F
G H
I
A B C D E F G H
H
C
B
D
A E
W901
9
8
7
6
5
4
3
2
1
1 2 3
G
To
OPERATION(1)
CIRCUIT(W901) on
SCHEMATIC DIAGRAM-12
P
O
52
51
-23.3V
P24
50
-28.3V
P25
49
-28.2V
P26
48
-25.9V
P27
47
-19.3V
P30
46
-17.7V
P31
45
-12.9V
P32
44
-29.1V
P33
43
-23.6V
P34
42
-26V
P35
41
-30.6V
P36
40
-8.2V
P37
39
-21.5V
P40
38
-25.4V
P41
37
0V
R902
10K
P42
36
P43
35
0V
R944
10K
P44
34
0V
R943
10K
P45
33
0V
R942
10K
P46
32
0V
R941
10K
P47
31
R912
10K
R911
10K
R910
10K
R909
10K
R908
10K
H G F
W903
1 2 3 4
F
To
OPERATION(2)
CIRCUIT(W903) on
SCHEMATIC DIAGRAM-12
N
M
L
K
J
I
H
G
F
E
D
C
B
A

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