LG GSA-5163D Service Manual page 31

3. Tracking & Sled Circuit
3-1-1. Block Diagram (Tracking Following)
A1~A4
(F, E)
Disc
Optical
Motor unit
Pick-up
HOP-8541T
TACT- TACT+
A+
A-
B+
B-
SLED MOTOR
Unit
TACT+
TACT-
A-
B-
A+
B+
MPPO
(A+D)-(B+C)
SPPO
DVD : (A1+A4)-(A2+A3)
CD : (EF1+EF2)-(EF3+EF4)-K*(E-F)
TRD
DAC
117
SL2
119
DAC
118
SL1
36
IC601
M63041
37
AFP
SL2N
8
SL1N
10
SL2P
6
SL1P
9
42
REF
IC101
HD153722TF
L
P
G
F
Compensator
Sled
Compensator
TOIN
39
EN1
20
CTL1
EN2
CTL2
21
SL1IN
2
C340
SL2IN
3
C381
1.65V
HAVC
L
LS
P 6
to
F
V14
Tracking
ADC
IC301
R8J32005FP
R348
C339 R347
1.65V 1.65V
R350
R349
R384
R374
TE
TE
R337
C328
GND
103
TE
TRD
SL2
SL1
40