3-1-2. Block Diagram (Seek)
44
Disc
Motor unit
Optical
Pick-up
HOP-8521T
A1~A4
SUMF
RFIP
(EF1~EF4)
(F, E)
C102
TACT+
TACT-
IC101
HD153721
MPPO
(A+D)-(B+C)
G
HAVC
LS
to
V14
5
L
P
F
L
P
F
SPPO
K*{(F+H)-(E+G)}
A+
A-
B+
B-
SLED MOTOR
Unit
(A+D)-(B+C)
K*{(F+H)-(E+G)}
G
HAVC
LS
to
V14
L
P
F
L
P
F
48
76
78
EQ
MIRR
DET
AGC
TOP
HOLD
60
59
BOTTOM
HOLD
-
+
-
-
+
+
TE1
MIRRTOPH
MIRRBOTH
C118
GND
39
TZC
MIRR
TEIN
VREF1
VREF1
TVDN
D
A
C
Tracking
Compensator
IC701
HD62604
33
Sled
Compensator
A
D
C
100
24
M
U
X
Short
Seek
Algorithm
Loog
Seek
Algorithm
P
W
M
18
41
19
TRD
TVDP
Track Counter
and Timer
R706
C708
GND
MIRR
TE1
TZC
TE
IP2MIRR
C117
GND
7