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SCHEMATIC DIAGRAM 1 : POSITIVE VOLTAGE LINE
Note: : PLAYBACK SIGNAL LINE
The number which noted at the connectors on the schematic A MD SERVO CIRCUIT : RECORDING SIGNAL LINE
diagram as "SCHEMATIC DIAGRAM 1" or
"SCHEMATIC DIAGRAM 2" indicates the schematic diagram
serial number located on the left corner in the schematic
diagram. 2.6V
LASER
MD OPTICAL PICKUP POWER ADJ.

R3 VR1
FOCUS TRACKING 4.7K 10K(B)
COIL COIL

FCS+ CN1
1 1 A
TRK+
2 2 B
TRK
3 3 C
FCS
4 4 D
F PD GND R1
5 5
PD A 4.7K
6 6 E
PD C
7 7 C1 220P
GND
8 8
A
A 9 9 F
H G I J K L F B
B 10 10 G
APC
1 0.1 C 11 11
F2
D 12 12 H
F1
E 13 13 I
GND
14 14 TP35
Vcc
1 2 3 4 5 6 7 F 15 15
G 16
VREF
16 J
IC11
VREF

RF2

RF1



C

Vcc
D
PD GND




H 17
PD GND
17
C8 C123 TC74HCT00AFL
TP37 0.22 0.1 NAND GATE
RF2
I 18 18 K
RF1
LD GND




J 19 19 L
GND




0V




5V

5V




5V

5V
20 20 C7
APC




TP44
D 0.22
LD
F2

F1




21 21 M 7 6 5 4 3 2 1
B




A




K
C
14 13 12 11 10 9 8 L 22 22 N GND
GND R8
23 23 270
LD C4
24 24 1 O
C B D E A LD GND
0.022 25 25 P
HFMV R6
26 26 4.7K
R5
1
1.9V
(1.9V) C5 Vcc
2.6V 0.22
8 7 6 5 2.5V 8 9 10 11 12 13 14




0V (0V) 5V


3.3V (3.3V) 0V

3.3V

0V (0V) 5V


3.3V (3.3V) 0V

3.3V

5V
NC

GND

LD

LD GND




0V
Q1




R30
1K
(1.8V)
1 H


300




1.8V 2SB1295 6 TB
LASER POWER DRIVE
IDC IN

HFMW
GND




R22 2.4V R29
NC




0 (2.4V) 0V 2.6V 47K
1 2 3 4
Q3




R71
C6




R72




22
1




22
2SB1462STX




5V
3.3V (1.8V) 1.8V
POWER SUPPLY
(0V)
G 5V
TP110 R13
3.3 D5
CN8 D S
6
5V (5V) 0V 5V
C81
56P




5
D6




L700 4 D5,6 Q10
(MAGNETIC HEAD) SC80209TE12R 2SJ278MYTR
3
C120
56P




C133
5V HEAD DRIVE




1
2 (5V)
D
1 Q11 0V
5V (0V) 0V
2SK1764KYTR
C118




G C117
1




TP111 HEAD DRIVE 0V 6.3V330
S
16V10
C60



M3
M
10 H




(LOADING MOTOR)
L11




5V


0V


0V


0V


5V




Q 5 4 3 2 1
OUT1




OUT2
GND




Vcc
VS




R
C48




IC92
0.1




M2
M
5V




(TRAVERSE MOTOR) LB1830MS TLM
VC OUT




S LOADING
VREF




T MOTOR DRIVE
IN1


IN2
VM




U 6 7 8 9 10
(1.7V)




(3.3V)


(3.3V)
1.7V

0V

R74 (2V)




3.3V


3.3V
8.2K 0V



0V




M1
2V




0V




M
0V




I
(SPINDLE MOTOR)
L
V K
B SWITCH CIRCUIT W J
1000P
C106


R73




R75


R77
39K




22K


22K




S1 (PROTECT) CN6 CP6
10 10 A
S2 (REFLECT)
9 9 F
8 8
S4 (DISC IN)
7 7 G
S5 (LOAD PLAY/REC)
6 6 C
S6 (LOAD PLAY)
5 5 B
4 4
S8 (TV SW)
3 3 H
S7 (LOAD TRG) D9 MA728TX
2 2 D
S3 (LOAD OPEN)
1 1 E
SCHEMATIC DIAGRAM 2
: POSITIVE VOLTAGE LINE : PLAYBACK SIGNAL LINE : RECORDING SIGNAL LINE




C110
L1




0.1
10 H
2.6V




PLAY
P Q R S T U V W
0.9V TP150
P P
TP149
0.5 s. 0.1V/DIV.




1000P
C14
TP148

R43 TP52 TP123 TP122
2.2K


C13




R17
22K
0.039


C122




0.47
1




4V22
C28
C23
0.1
TP36




C12
3300P
C29
PLAY
0.2V




1.8V (1.3V) 1.3V




1.3V (0.5V) 0.5V
P P




1.1V (0V) 0V
0.5 s. 50mV/DIV.




R44
22K
PLAY
2.6V
1.3V
1.3V

1.4V
3.3V
3.3V
3.3V
3.3V

2.6V
0.45V




0.082
C66
P P
36 35 34 33 32 31 30 29 28 27 26 25




0.082
0.5 s. 50mV/DIV.




C59
RF DATA

NRFDET/OFTR
SVREF




OUT RF




Vcc
OFT IN
NRFSTBY
CRF AGC
EQ IN




RFCK

NRFLD
ARFO
4V10
C20
C19
0.1




TP38 TP43
1.3V 0V
J 37 VREF GND 24
1.3V 1.7V (0V) 0V C30
L 38 RF1 OFT O 23 0.012
1.3V PLAY 0.8V (1V) 1V TP56
K 39 RF2 3.3V CBD O 22
1.3V 2.5V (0V) 0V
I 40 F1 BDO/TRCRS 21 H
1.3V 0V 1.5V
H 41 F2 CEA 20 TP57
C64 0.015 1.3V 2ms. 1V/DIV. 1.3V (1.6V) 1.7V
42 CLPF1 PLAY AS/MON3T 19 I
R18 10K 0.3V 50mV 1.3V R24 47K
43 CLPF2 FBAL 18 J
1.3V P P 1.3V R26 47K
F 44 A AS GAIN 17 K
1.3V IC1 2ms. 50mV/DIV. 1.3V
G 45 B FE 16 L
1.3V AN8772FHQ PLAY 1.3V R32 47K
N 46 C RF AMP AB GAIN 15 M
1.3V 0.1V 1.3V R45 33K
M 47 D P P LNP 14 N
1.3V 1.3V R28 47K
48 CENVC 2ms. 50mV/DIV. TGAIN 13 O
APC REF
TEMP IN
APC PD




C16
CENVD




CRS IN
TEMP

TOFS




180P TP41 TP39 TP40 TP42
LD IN




TBAL
ADIP
LDO




TE




8200P



3300P
1000P
1000P
1000P



1000P
1 2 3 4 5 6 7 8 9 10 11 12




5600P
C18
1.9V (1.9V) 2.5V
0V (0V) 2V
0V
0V
1.3V




1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V




C21



C53
C57
C35
C31



C32


C37 C55
180P 1000P
C56 1000P
E
O
0.022




0.039




C17
470K




C25
C11




P
R10




3300P
R14 R16
10K 100K
2.7K
R34
100K


C129
100P
R25




TP55
TH1
10K




C
2.7K



0.33
C61
47K




C24 TP54 R84
0.1
1K




1000P 15K
R23
R20
R19




0V
C65




R82
47K




Q2 47K
DTC114YETL 3.3V
A
REC DRIVE 10K
0V C67
C86 3900P
0.015
R15
22K




C26
4700P




B




A B C D E F G
SCHEMATIC DIAGRAM 3
A MD SERVO CIRCUIT : POSITIVE VOLTAGE LINE




2.6V
3.3V


10 H
L12


A B C D E F G H I J K L

R135 2.7K 5V
R104 2.7K




10 H
R105 2.7K




L15
R121 2.7K
R122 2.7K
R134 2.7K
R132 2.7K
R130 2.7K


S




1K
T




1K

1K
1K
1K
1K
1K
1K




22K