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3. Tracking & Sled Circuit
3-1-1. Block Diagram (Tracking Following)
Disc
Optical
Motor unit
Pick-up
KRS-340B
TRK-
TRK+
A+
A-
B+
B-
SLED MOTOR
Unit
TRK+
TRK-
A+
A-
B+
B-
MPPO
(A+D)-(B+C)
A,B,C,D
E,F,G,H
SPPO
K*{(F+H)-(E+G)}
TRO
23
FMO
26
27
FMO2
46
IC501
45
SLO1+
BD7907
46
SL01-
45
SLO2+
46
SLO2-
45
27
MT1516
L
P
F
DAC
Sled
PWM
Compensator
C561
R561
TRKIN
52
CTL1
22
MUTE2
CTL2
23
MUTE1
SLIN1
28
SLIN2
29
VC
1.4V
IC401
HAVC
L
LS
P
G
to
F
V14
Tracking
Compensator
IC505
R567
C156
C154
MUTE2
101
MUTE1
102
45
TEO
TEI
40
ADC
IC101
MT1518
R148
TRO
C187
1.4V
R148
FMO
R148
FMO2
29
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