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SCHEMATIC DIAGRAM-1
MD OPTICAL PICKUP
FOCUS
TRACKING
COIL
COIL
H
G
I
J
K
L
F
1
0.1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
C
B
D
E
A
0.022
8
7
6
5
1
2
3
4
(TRAVERSE MOTOR)
MD SWITCH CIRCUIT
S1
S4
S5
S6
S8
S7
S3
FCS+
CN1
1
1
TRK+
2
2
TRK-
3
3
FCS-
4
4
GND
F-PD
5
5
PD-A
6
6
PD-C
7
7
GND
8
8
A
A
9
9
B
B
10
10
APC
C
11
11
F2
D
12
12
F1
E
13
13
GND
14
14
Vcc
F
15
15
VREF
G
16
16
PD-GND
H
17
17
RF2
I
18
18
RF1
J
19
19
GND
20
20
D
21
21
K
C
22
22
L
GND
23
23
LD
24
24
LD-GND
25
25
HFMV
26
26
2SD2216STX
POWER SUPPLY
M21
M
M11
M
(SPINDLE MOTOR)
TP103
CN8
6
5
L700
4
(MAGNETIC HEAD)
3
2
1
C118
1
M31
M
(LOADING MOTOR)
(PROTECT)
CN6
CP1
10
10
9
9
8
8
(DISC IN)
7
7
(LOAD PLAY/REC)
6
6
(LOAD PLAY)
5
5
4
4
(TRAVERSE)
3
3
(LOAD TRG)
2
2
(LOAD OPEN)
1
1
SIDE A
MD SERVO CIRCUIT
TP65
TP68
<2.5V>
<3.3V>
3.3V
Q1
Q3
<3.3V>
2SB1462STX
<3.3V>
LASER POWER
DRIVE
R2
<1.8V>
220
R22
4.7K
R
S
T
U
V
D6
SC80209TE12R
D
<-1.1V>
5V
2SK1764KYTR
D5
C120
C81
SC80209TE12R
180P
180P
TP105
TP106
IC92
LB1830MS-TLM
MOTOR DRIVE
A
B
C
D
E
F
D9
MA728TX
C106
G
1000P
H
SIDE B
: +B SIGNAL LINE
C8
0.22
C7
0.22
TP108
TP1
R5
4.7
R6
C5
4.7K
0.22
R8
270
<2.6V>
IC11
TC74HCT00AFL
NAND GATE
7
6
5
4
3
2
1
GND
Vcc
8
9
10
11
12
13
14
R72
22
<5V>
0V
G
S
R71
22
Q11
<5V>
0V
G
HEAD DRIVE
D
S
<0V>
<5V>
5V
C133
C123
Q10
0.1
0.1
2SJ278MYTR
HEAD DRIVE
C60
0.1
<5V>
<0V>
<0V>
<5V>
5
4
3
2
1
6
7
8
9
10
<1.7V>
<2.1V>
<3.3V>
<3.3V>
R74
8.2K
R73
R75
R77
39K
22K
22K
: MD SIGNAL LINE
: MD RECORD SIGNAL LINE
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
L11
10
H
I
J
K
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