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SCHEMATIC DIAGRAM-3
A
MD SERVO CIRCUIT
TP74
C113
0.1
C143
4V10
R2
1K
A
B
C
D
E
R78
1K
F
R87
1K
1
2
3
X1
(10.02MHz)
:POSITIVE VOLTAGE LINE
A B
C
D E F G H
R135
2.7K
R104
2.7K
R105
2.7K
R121
2.7K
R122
2.7K
R134
2.7K
R132
2.7K
R130
2.7K
20
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
3.3V
RST
21
UNIT TEST
22
CS2
23
0V
SCTSY
24
0V
MDISY
25
2.8V
PLAY
PANEL REQ
26
0V
( 0V)
3.3V
LED OUT1
27
3.3V
(3.3V)
0V
LED OUT2
28
T
3.3V
( 0V )
0V
LED OUT3
29
PLAY
TEST02
30
3.2V
3.3V
V
2(3V)
31
DD
1.6V
0V
OSC1
32
T
23ms.
1.5V
OSC2
33
0V
Vss
34
0V
XI
35
F=10.02MHz
XO
36
0V
Vss
37
TEST03
38
EEPCS
39
F=10.02MHz
EEPCK
40
41
42
43
44
45
46
47
A
B
C
C99
1000P
C121
1000P
3.3V
2.6V
3.3V
I J K L
5V
SPMWE
ARDSKIP
IC10
SRVRETRY
MN101D03DAA1
SBPRETRY
SYSTEM CONTROL
BUSY
ERROR
3.2V
FLOCK
0V
TLOCK
13.3ms.
SLOCK
PLAY
3.2V
SEL ADDA
Vcc5V
0V
Vcc3V
0.5 s. 1V/DIV.
SRV LOAD
TEST KEY IN
1.9V
PLAY
P-P
3.2V
LOAD P
SRV TEST
0V
MO LOAD
5 s. 1V/DIV.
2.5V
KEY2
P-P
KEY1
TEMP
48
49
50
51
52
53
54
55
56
57
58
59
60
G H I J K L M N O
P
Q R
S
T
U
V
80
79
78
77
76
75
C142
74
0.1
73
72
C112
71
16V10
5V
C141
70
0.1
3.3V
69
68
TP77
67
66
65
C115
64
560P
3.3V
63
3.3V
C114
62
1.3V
61
C119
1000P
R113
0
560P
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