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3. Focus/Tracking/Sled Servo Circuit
3-1. FOCUS, TRACKING & SLED SERVO PROCESS
FOCUS & TRACKING SERVO PROCESS
Pick - Up
E
A
C
B
F
F
D
C
B
A
E
FOCUS &
TRACKING
ACTUATOR
T+
T-
F+
LEVEL SHIFT
SLED(Feed) SERVO PROCESS
SLED MOTOR
M
Hall Sensor
CD
(A. B. C. E. F)
5
DVD (A. B. C. D.)
6
F-
IC501
DRIVE
BA5983FM
FEED. MOTOR+
FEED. MOTOR-
PHO - C
Q501
KTD1304
PHO - A
IC301
RF AMP
SSI3723
(A. B. C)
FOCUS
ERROR
(A. B. C.D)
DETECTOR
E-F
Generating
TE
Generating
DPD TE
(A
. B
. C
.D
)
2
2
2
2
Control
FAO
TAO
IC501
DRIVE
BA5983FM
SLED CLK
FE
TE/
DPD TE
SELECTOR
TE
IC701
TE
CD/DVD SERVO & DSP
CXD3030R
SLED
A/D
Signal
DIGITAL
EQUALIZER
D/A
(AUTO ADJUSTMENT
CIRCUIT)
FE
SAO
+
SLGNCHG
IC201
u-COM
15
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