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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
FIL
SGND
EMPSET ADPVCC
44
43
42
41
1
OVP
2
BATT
RSTOUT
3
4
DEDSET
5
BDSW
ERRO
6
7
ERRI
SCP
8
OVER
VOLTAGE
PROTECTION
9
COSC
TRIANGLE
WAVE
NC
10
NC
SIGNAL VCC
OPIN(-)
11
12
13
14
15
SVCC1
OPOUT OPIN(+)
SVCC2
58
53
21
29
MICOM TO SERVO CONTROL
LDON
AUTO SEQUENCER
ADJUSTMENT-FREE CONTROL
FS1-
FS4
Built-in Post Filter Amp ( L&R )
14 15 12 13 18 16 11 10
EMP
STOP
START
CLKIN
PWM
DVCC
40
39
38
37
36
35
STARTER
MAXIMUM
DETECTOIN
MUTE34
MUTE2
16
17
18
19
20
21
MUTE34
DI3
DI4
DI2
MUTE2
VREF
28
30
37
36
35
34
50
51
MICOM Data
Interface Logic
TM1-
BAL1-
PS1-
GA1-
TM6
BAL5
PS4
GA5
8
9
- 3 -
RST
34
33
CHGSET
32
DO1(-)
31
DO1(+)
2
!
30
DO2(-)
2
!
29
DO2(+)
2
!
28
PGND
2
!
27
2
DO3(+)
!
26
DO3(-)
2
!
DO4(+)
25
2
!
24
DO4(-)
2
!
23
BRAKE
22
DI1
57
25
27
26
2
Focus Phase
Compensation
& Offset cancel
circuit
Tracking Phase
Compensation Block
& Jump Pulse GEN.
Sled Servo Amplifier
& Sled Kick GEN.
Spindle Servo LPF
( Double Speed )
Mirror Detection
Circuit
FOK Detection
Circuit
FDFCT
59
FE-
46
FEO
47
TDFCT
56
TE-
48
TEO
49
TE2
52
LPFT
54
TG2
61
TGU
60
SLO
42
SL-
43
SL+
41
SPDLO
45
SPDL-
44
SMDP
22
SMON
23
SMEF
24
FSET
5
MIRROR
38
MCP
80
FOK
39
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