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3. Tracking & Sled Circuit
3-1-1. Block Diagram (Tracking Following)
Disc
Motor unit
Optical
Pick-up
HOP-8511T
A1~A4
(F, E)
TEI
R706
C708
GND
ENC1
SLIN2
SLIN1
TVN
TVP
TE
ADC
Tracking
Compensator
DAC
TRD
TACT+
TACT-
IC101
HD153721
IC701
IC602
HD62604
BU2507
S-DAC
MPPO
(A+D)-(B+C)
G
HAVC
LS
to
V14
5
33
41
L
P
F
L
P
F
SPPO
DVD : (A1+A4)-(A2+A3)
CD : (EF1+EF2)-(EF3+EF4)-K*(E-F)
Sled
Compensator
PWM
TVN
19
TVP
ENC1
18
15
A+
A-
B+
B-
SLED MOTOR
Unit
TRD
R624
IC501
BD7907
TACT+
TACT-
CTL1
CTL2
MUTE2
MUTE1
VC
1.65V
TRKIN
52
27
22
23
48
47
SLIN1
28
SLIN2
29
SLIN1
SLIN2
A-
B-
37
36
A+
B+
35
34
SLO1+
SL01-
SLO2+
SLO2-
C627
GND
C619
C618
R635
R630
2
13