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SCHEMATIC DIAGRAM-1
NOTE:
The number which noted at the connectors
on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located
on the left corner in the schematic diagram.
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
(LOADING MOTOR)
(TRAVERSE MOTOR)
B
SWITCH CIRCUIT
S1
S2
S4
S5
(LOAD PLAY/REC)
S6
S8
S7
S3
A
MD SERVO CIRCUIT
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
L
22
22
GND
23
23
LD
24
24
LD-GND
25
25
HFMV
26
26
TP110
CN8
6
5
L700
4
(MAGNETIC HEAD)
3
2
1
TP111
M3
M
M2
M
M1
M
(SPINDLE MOTOR)
(PROTECT)
CN6
CP6
10
10
(REFLECT)
9
9
8
8
(DISC IN)
7
7
6
6
(LOAD PLAY)
5
5
4
4
(TV SW)
3
3
(LOAD TRG)
2
2
(LOAD OPEN)
1
1
LASER
POWER ADJ.
R3
VR1
4.7K
10K(B)
A
B
C
D
R1
4.7K
E
C1
220P
F
G
H
I
R4
0
TP35
J
C8
TP37
0.22
K
L
C7
TP44
0.22
M
N
O
R8
P
R6
270
4.7K
1.8V
2.6V
C5
(1.8V)
0.22
2.5V
0V
(1.9.V)
Q1
1.9V
2SB1295-6-TB
LASER POWER DRIVE
R22
R29
2.4V
0
47K
2.6V
(2.4V)
0V
Q3
3.3V
2SB1462STX
(1.8.V)
1.8V
POWER SUPPLY
D5
R13
SC80209TE12R
3.3
5V
(5V)
0V
D
Q11
5V (0V) 0V
2SK1764KYTR
G
HEAD DRIVE
0V
S
Q
5
R
S
T
6
U
V
W
A
F
G
C
B
H
D9
MA728TX
D
E
:POSITIVE VOLTAGE LINE
:MD PLAYBACK SIGNAL LINE
:MD RECORDING SIGNAL LINE
2.6V
IC11
TC74HCT00AFL
C123
NAND GATE
0.1
7
6
5
4
3
2
1
GND
Vcc
8
9
10
11
12
13
14
0V
(0V)
G
5V
D
S
5V (5V) 0V
5V
Q10
2SJ278MYTR
HEAD DRIVE
C117
6.3V330
5V
4
3
2
1
IC92
LB1830MS-TLM
LOADING
MOTOR DRIVE
7
8
9
10
I
L
K
J
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