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3-1-2. Block Diagram (Seek)
41
Disc
Motor unit
Optical
Pick-up
HOP-8541T
A1~A4
SUMF
RFIP
RFIN
(EF1~EF4)
(F, E)
C114
TACT+
TACT-
IC101
HD153722TF
MPPO
(A+D)-(B+C)
G
HAVC
LS
to
V14
6
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
47
76
77
75
EQ
MIRR
DET
AGC
TOP
HOLD
60
59
BOTTOM
HOLD
-
+
-
-
+
+
TE1
MIRRTOPH
MIRRBOTH
C118
GND
39
TZC
MIRR
TEIN
VREF1
VREF1
SL2
D
A
C
Tracking
Compensator
IC301
R8J32005FP
103
Sled
Compensator
A
D
C
55
58
M
U
X
Short
Seek
Algorithm
Loog
Seek
Algorithm
D
A
C
118
117
119
TRD
SL1
Track Counter
and Timer
R337
C328
GND
MIRR
TE1
TZC
TE
IP2MIRR
C117
GND
7