Focus/Tracking/Sled Servo Circuit - LG CED-8042B Manual

3. Focus/Tracking/Sled Servo Circuit

3-1. Focus, Tracking & Sled Servo Process
Focus, Tracking Serve
Pick up
E
F
C B
D A
G
H
Focus, Tracking
Actuator
_
T+ T F+
Level shift
Level shift
Sled control
Sled Motor
M
Hall sensor
4
H1 +
H1 -
H2 +
H2 -
A,B,C,D,E,F,G,H
A,B,C,D
8
A,B,C,D
E,F,G,H
F _
IC901
Diver
LA6543M
IC901 Driver LA6543M
SLD+
SLD-
IC903, IC910
NJM3403V
Speed
Detector
Sled Clock
IC904
NJM2903V
IC601 AK8563
FE
Focus Error
Detector
TE
Track Error
Detector
IC501
Servo control
CXD3011R-1
FAO
FAO
D/A
TAO
TAO
Sled control
signal
XOR
TC7SH86
IC905
TE
FE
TE FE
A/D
Digital EQ
Auto Adj. Circuit
SAO
SLED -MOVE
IC202
m -com
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