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IC BLOCK DIAGRAM & DESCRIPTION
IC101A FAN8038B (Power & Driver)
IC201A SIL9223B02 (RF AMP. & Servo Signal Processor)
RF-
72
RF Amp
RFO
73
PD1
64
Focus Error Amp
PD2
65
FE-BIAS Adjustment
FEBIAS
62
F
66
Tracking Error Amp
E
E/F Balance & Gain
67
Control
EI
78
PD
68
APC Amp
LD
69
VR
70
Center Voltage Amp.
EQC
77
RF Level AGC
EQO
75
& Equalizer
IRF
74
ASY
31
EFM
EFM
32
Comparator
RFI
76
DCB
1
Defect Detection
Circuit
DCC2
3
4
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FIL
SGND
EMPSET ADPVCC
44
43
42
41
1
OVP
2
BATT
RSTOUT
3
4
DEDSET
BDSW
5
ERRO
6
7
ERRI
SCP
8
OVER
VOLTAGE
PROTECTION
COSC
9
TRIANGLE
WAVE
NC
10
NC
SIGNAL VCC
OPIN(-)
11
12
13
14
15
SVCC1
OPOUT OPIN(+)
SVCC2
58
53
21
29
28
MICOM TO SERVO CONTROL
LDON
AUTO SEQUENCER
ADJUSTMENT-FREE CONTROL
FS1-
TM1-
FS4
TM6
Built-in Post Filter Amp ( L&R )
14 15 12 13 18 16 11 10
EMP
START
CLKIN
DVCC
STOP
PWM
RST
40
39
38
37
36
35
34
STARTER
MAXIMUM
DETECTOIN
2
!
2
!
2
!
2
!
2
!
2
!
2
!
2
!
MUTE34
MUTE2
16
17
18
19
20
21
22
MUTE34
DI2
MUTE2
DI1
VREF
DI3
DI4
30
37
36
35
34
50
51
MICOM Data
Interface Logic
BAL1-
PS1-
GA1-
BAL5
PS4
GA5
8
9
- 3 -
33
CHGSET
32
DO1(-)
31
DO1(+)
30
DO2(-)
29
DO2(+)
28
PGND
27
DO3(+)
DO3(-)
26
DO4(+)
25
24
DO4(-)
23
BRAKE
57
25
27
26
2
FDFCT
59
Focus Phase
Compensation
FE-
46
& Offset cancel
circuit
FEO
47
TDFCT
56
TE-
48
Tracking Phase
TEO
49
Compensation Block
TE2
52
& Jump Pulse GEN.
LPFT
54
TG2
61
TGU
60
SLO
42
Sled Servo Amplifier
SL-
43
& Sled Kick GEN.
SL+
41
SPDLO
45
SPDL-
44
Spindle Servo LPF
( Double Speed )
SMDP
22
SMON
23
SMEF
24
FSET
5
MIRROR
38
Mirror Detection
Circuit
MCP
80
FOK Detection
FOK
39
Circuit
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