Page 1
A
B
C
1
2
3
4
5
2
1
TC9490FA
g
m
Block Dia
Tracking actuator
Spindle motor
Feed motor
Feed motor
Focus actuator
FAN8037
Focus
driver
Tracking
driver
Feed
driver
TA2147F-X
RF amp. AGC amp.
servo
signal
interface
Focus
eror
amp.
Tracking
error
amp.
Focus
servo
amp.
Tracking
servo
amp.
Data
slicer
VCO
PLL
TMAX
A/D
PWM
D/A
Synchronous
signal
EFM
demodulator
CLV
servo
Digital
equalizer
auto
adjustment
Correction
circuit
RAM
Sub code
decording
Servo
control
D/A
converter
Micon
interface
LPF LPF Mute Audio output
Microprocessor
control
Mecha.detect
switch
Eject switch
Bus
buffer
J-BUS
ra
Spindle
driver
Positioning
motor driver
Tray motor
driver
CH-X460
-
Page 2
CH-X460
< MEMO >
2-2
Page 3
3
L
Standard schematic diagrams
Main circuit 1/2
CH-X460
SIGNA
2-
Page 4
Main circuit 2/2
CH-X460CH-X460
SIGNAL
-
Page 5
CH-X460
5
Printed circuit boards
Main board(Forward side)
F941
C913
D912
C914
Q943
C912
Q922
Q942
C943
R911
R923
R941
R912
C944
C915
Q941
R943
R942
Q944
Q911
CN504
C945
S601
R913
D921
D941
C942
C983
C946
D913
Q921
C609
Q602
C941
R921
R621
R981
R620
Q902
L901
R627
X601
R603
C610
C601
L601
D583
R901
D911
D584
D585
R593
R592
R902
C901
C582
R609
R655 R656
C550
Q582
R591
R590
R625
R626
R617
Q583
C602
IC604
C902
D901
R904
R905
Q901
R903
R926
R924R925
C581
R619
R618
C585
S606
R604
C605
R601
IC602
C606
C611
C604
C603
R605
R660
R657R658
C651
L522
C522
R588
R586
R587
IC581
C551
IC601
R522
IC651
R535
R536
R521
R585
C552
C524
L524
R537
R599
C612
Q581
C523
C521
C525
R544
C584
R602
R534
R524
R610
R538
C526
R596
R612
R523
C540
R597
R595
R614
IC521
C583
R623
R611
C553
R624
C549
C107
C548
R622
R583
R584
R582
R581
Q971
C101
L523
C528
R972
R525
R652
R653
R661
R651
R659
R654
R973
R543
C207
C546
C530
C529
Q972
C544
R607
C539
D951
C543
R971
R539
C541
R532
R531
R530
R529
R526
R528
R527
R606
C201
R954
R205
R951
C542
C538
C537
C536
C535
C531
C534
C533
C545
C547
R517
C509
C104
C204
C105
C507
R516
C205
R101
R982
R509
IC501
R103
R102
C103
C102
R104
C512
R204
C505
Q501
Q201
R513
R519
D101
C513
R507
R511
R108
R208
C111
Q101
C511
C504
C502
R514
C906
R508
R515
C514
CN601
CN904
R512
R506
C907
R505
CN503
R504
R503
C501
IC101
C202
C203
R202
R203
R201
R106
C106
R107
R105
R206
C206
R207
Q981
D981
C982
R542
R541
L521
R540
X521
C503
R518
C508
R510
C510
C527
CN502
B505 B506
CN501
B504
B501
B503
B502
D902
L902
C952
CN903
C951
C112
R112
CN901
C1121
R1121
F901
C9511
CN902
2-
Page 6
6
Main board(Reverse side)
C605
CH-X460
F941
L901
Q941
CN601
CN904
CN503
Q501
C505
Q981
C503
Q942
C943
C912
C983
Q911
C913
C550
C901
C601
D584
C941
L601
S601
D901
D911
C946
D583
D585
C581
X601
C104
C547
C548
C105
C205
C204
C545
L521
X521
C509
C539
C201
C101
L523
C551
L522
C522
L524
C583
C529
Q581
CN902
CN901
C609
C585
S606
D902
L902
C952
F901
CN504
2-
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