LG GSA-4040B Service Manual page 42

3-1-2. Block Diagram (Seek)
Disc
Optical
Motor unit
Pick-up
HOP-8511T
TACT- TACT+
A+
A-
B+
B-
SLED MOTOR
Unit
GND
C708
TE
R706
TE1
IP2MIRR
MIRR
TZC
44
(A+D)-(B+C)
(EF1~EF4)
A1~A4
(F, E)
K*{(F+H)-(E+G)}
(A+D)-(B+C)
K*{(F+H)-(E+G)}
L
P
F
76
SUMF
EQ
AGC
78
RFIP
33
Track Counter
and Timer
100
M A
24
U D
X C
IC101
HD153721
MPPO
-
L
SPPO
P
+
F
-
+
HAVC
LS
G
to
V14
TOP
HOLD
MIRRTOPH
C118
GND
IC701
HD62604
Short
Seek
Algorithm
Loog
Seek
Algorithm
HAVC
L
LS
G P
to
F
V14
VREF1
L
+
P
-
F
VREF1
MIRR
DET
BOTTOM
HOLD
60 59
MIRRBOTH
C117
GND
Tracking
Compensator
Sled
Compensator
5
TE1
C102
7
TEIN
39
TZC
48
MIRR
TRD
D
A 41
C
TVDN
P
19
W
M
18
TVDP