15
A
B
C
D
5
6
7
8
5
6
7
8
: RF SIGNAL ROUTE
: ROM DATA SIGNAL ROUTE
: FOCUS SERVO LOOP LINE
: TRACKING SERVO LOOP LINE
: SLIDER SERVO LOOP LINE
(ROM)
(F)
(T)
(S)
(ROM)
(F)
(F)
(F)
(F)
(F)
(T)
(T)
(T)
(T)
(T)
(S)
(S)
AGCOFF
LD-ON
IC506
TC74VHCT245AFT
VKF1001
TP200
IC501
PD4889A
IC504
TC74VHC20FT
IC505(1/2)
TC74VHC139FT
IC505(2/2)
TC74VHC139FT
SRM2B256SLMX70
IC201
LC78650NE
C271 4700p
R271 150k
R273 220k
R277
100k
R275
33k
R276
150k
2/2
1/2
H
2/3
H
2/3
H
2/3
H
2/3
H
3/3
XRESET,DOUT,SBSY,
PW,SFSY,SBCK,LRSY,
ROMCK,ROMXA,MON,
C2F,FG
LEVEL SHIFT
1/3
H