Samsung MAX-870 Service Manual page 71

Block Diagrams
KB9223 : NIC9223
RF– 73
RF Amp
RF Amp
74
RFO
65
PD1
Focus Error Amp
PD2 66
FE-BIAS Adjustment
63
67
F
Tracking Error Amp
E 68
E/F Balance & Gain
Control
EI 79
PD
69
APC Amp
70
LD
71
VR Center Voltage Amp.
78
RF Level AGC
76
ARF
Equalizer
75
IRF
ASY 32
33
EFM
Comparator
77
RFI
2
DCB
Defect Dectection
Circuit
4
5
9-12
59 54 22
&
FS1 to
EFM
15
30 29 31 38 37 36 35
Micom Data
Interface Logic
MICOM TO SERVO CONTROL
AUTO SEQUENCER
ADJUSTMENT-FREE CONTROL
TM to BAL1 to PS1 to
FS4 TM6 BAL5 PS4
Built-in Post Filter Amp (L&R)
16 13 14 19 17 12 11
51 52 58 26 28
Focus Phase
Compensation
& Offset cancel circuit
Tracking Phase
Compensation Block
& Jump Pulse GEN.
Sled Servo Amplifier
& Sled Kick GEN.
GA1 to
GAS
Spindle Servo LPF
(Double Speed)
MIRROR DETECTION
CIRCUIT
FOK DETECTION
CIRCUIT
9 10
27 3
60 FDFCT
47
FE-
48
FEO
57 TDFCT
49
TE-
50 TEO
53
TE2
55
LPFT
62
TG2
61
TGU
43
SLO
44 SL–
SL+
42
46 SPDLO
45 SPDL-
23
SMDP
24 SMON
25
SMEF
FSET
6
MIRROR
39
MCP
1
FOK
40
Samsung Electronics