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15.2. SERVO BLOCK DIAGRAM
(LOADING MOTOR DRIVE)
IC2591
TRAY CLOSE
TRAY OPEN
TRAY SET2
TRAY SET1
(OPERATION MICON)
IC6001
28
27
RFENV
49
100
(0.5sec./DIV.)
CLOSE 2.5Vp-p
IC2591-2(UP),IC2591-4(DOWN)
5.0Vp-p(20usec./div.)
IC2501-12
7.2Vp-p(20usec./div.)
IC2511-11,12,13,14
(0.5sec./DIV.)
OPEN 2.5Vp-p
IC2591-2(UP),IC2591-4(DOWN)
RF SIGNAL
SPINDLE MOTOR DRIVE SIGNAL STEPPING MOTOR DRIVE SIGNAL
TRACKING ERROR SIGNAL
FOCUS ERROR SIGNAL
BRK
FIN
RIN
SS
FG
EC
ECR
OPIN2-
OPIN1-
OPIN3-
OPIN4-
BRK
SS
FG
EC
ECR
TRV-SW
FOCUS DRIVE
TRAKING DRIVE
TRSDRV-B
TRSDRV-A
OFTR
BDO
FBAL
FE
TBAL
TE
VIN4
VIN3
VIN2
VIN1
VIN8
VIN7
STNBY
STD1
SCK
SEN
DAT3
DAT2
DAT1
DAT0
SBI1
SBO1
SBT1
CPUIRQ
CPCEN
CPSEN
OUT2
OUT1
A3
A2
A1
H1+
H1-
H2+
H2-
H3+
H3-
VO2-
VO2+
VO1-
VO1+
VO4+
VO4-
VO3+
VO3-
Q
C
D
OPTICAL PICK UP UNIT
PHOTO DETECTOR
B3B4
B2B1
A3
A2
A4
A1
LASER DIODE
AMP
HEAD
Q5201
LD DRIVE
1
2
IC6303
(EEPROM)
112
113
114
115
71
76
46
45
79
72
70
47
2
6
5
IC6201
(CPU)
IC7001
(ODC)
INTERFACE
BALANCE
FOCUS
BALANCE
TRACKING
12
16
15
14
60
59
58
57
55
54
6
23
25
7
29
20
(FEP)
IC5201
79
77
78
80
90
89
88
87
86
85
47
49
44
3
43
2
55
56
53
52
15
59
6
5
42
51
23
26
10
2
3
5
6
8
9
12
18
17
13
9
7
2
4
26
27
28
11
12
13
14
15
16
17
18
6
3
(DSC)
IC2001
29
30
(MOTOR DRIVE)
(SPINDLE MOTOR DRIVE)
IC2501
IC2511
M2601
LOAD M-
LOAD M+
MOTOR
LOADING
S2601
TRAY OPEN
TRAY CLOSE
M3
M2
M1
H1-
HALL1
H1+
H2-
H2+
HALL2
H3+
H3-
TRV-SW
HALL3
TRAVERSE SWITCH
ACT T-
ACT T+
ACT F-
ACT F+
STEPPING MOTOR UNIT
STEPPING MOTOR
LOADING MOTOR UNIT
SPINDLE MOTOR UNIT
OPTICAL PICK UP UNIT
ACTUATOR
COIL
TRACKING
COIL
FOCUS
36