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SCHEMATIC DIAGRAM-5
MD SERVO CIRCUIT
R110
1K
Q
R
S
T
A
R67
1K
D
K
J
Q
<0V>
R
<0V>
S
<0V>
T
<3.3V>
<3.3V>
H
<3.3V>
G
<0V> 3.3V
C
0V
<3.3V>
D
R104
R126
3.3K
22K
U
C141
0.1
R28
TP26
TP27
TP28
TP29
TP30
TP31
TP32
L13
10
H
TP33
TP34
CN4
: CD SIGNAL LINE
: +B SIGNAL LINE
H
I
G
1000P
40
39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
EE P CK
41
42
EE P DATA O
EE P DATA I
43
ADDATA O
44
ADCS
45
46
ADCLK
MD PLAY
MD PLAY
SLOCK
3.3V
47
TLOCK
48
0V
FLOCK
49
T
6.8ms.
T
18ms.
50
ERROR
IC10
BUSY
51
MN101CF61GAA
SBPRETRY
52
SYSTEM CONTROL
SRVRETRY
53
54
TOC OK
TDATA
55
TCLK
56
LOADSW0
57
LOADSW1
58
LOADSW2
59
LOAD
60
SW3
61
62
63
64
65
66
67
68
69
70
71
72
R130
3.3K
3.3V
B
A E
G H I
K J L M
E F S D A T Q R
1K
1
2
3
4 5 6 7 8 9 10 11 12 13
14
15
TO
MAIN CIRCUIT
(CN731) ON
SCHEMATIC
DIAGRAM-10
: MD SIGNAL LINE
: MD RECORD SIGNAL LINE
C
D
F
E
C34
FCK
20
<3.3V>
RXD
19
MD PLAY
TXD
18
3.3V
MMOD
17
X2
16
0V
0.5
s. 1V/DIV.
X1
15
3.3V
Vss
14
<1.6V>
OSC1
13
1.4V
0V
<1.6V>
P-P
OSC2
12
<3.3V>
V DD
11
F=10MHz
<3.3V>
VREF+
10
<3.3V>
(VDD)NC
9
2.4V
P-P
NC
8
TEST KEY IN
7
F=10MHz
NOLOAD
6
<0V>
SEL ADDA
5
<1.9V>
TEMP
4
<3.3V>
KEY2
3
<3.3V>
KEY1
2
VREF-
1
73
74
75
76
77
78
79
80
O I
L
N
N
O P C
B
R44
R68
100
100
16
17
18
19 20 21 22 23 24
25 26 27 28 29
30
R100
47K
R125
47K
X1
(10MHz)
3
2
1
R106
22K
C143
1
R53
0
R115
10K
R114
10K
C114
R111
C115
R112
1000P
220
1000P
220
Q4
2SB1121ST-TD
M
REGULATOR
C3
R9
47
10K
F
P V
L9
R7
470
C42
6.3V47
5
4
RN5RG33AA
TP51
REGULATOR
TP53
1
2
3
B
R56
22K
IC5
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