Diagrams; Block Diagram - Servo Section - Sony MDS-DRE1 Service Manual

6-1. BLOCK DIAGRAM – SERVO Section –
OVER WRITE HEAD
I
I-V AMP
J
IC172
F
B
C
B
J
I
D A
A
E
DETECTOR
C
D
E
F
RV101
E-F BALANCE
OPTICAL PICK-UP
(KMS-210A/J-N)
RV102
LASER
POWER
LASER ON
PD
SWITCH
Q101
LASER DIODE
AUTOMATIC
ILCC
POWER CONTROL
Q162, 163
PD LD
SPINDLE/SLED MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
IC151
OE
FO4 RI4
22
M102 SPINDLE
M
RO4 F/R4
(SPINDLE) MOTOR DRIVE
24
FO2 FI2
15
M101 SLED
M
RO2
RI2
(SLED) MOTOR DRIVE
13
2-AXIS
DEVICE TRK+
FO3 FI3
29
TRACKING
RO3 RI3
COIL DRIVE
26
TRK–
FO1
FCS+ FI1
8
FOCUS
FCS– RO1 RI1
COIL DRIVE
11
CLK
WRPWR
HF
MOD
MODULE
HF MODULE SWITCH
Q164
05
SECTION 6

DIAGRAMS

OVER WRITE
HEAD DRIVE
IC181, Q181, 182
HR901
4 2
IC182
RF AMP, FOCUS/TRACKING
ERROR AMP
IC101
MORFI
45
I MORFO
47 RF 46
AGCI
J RFO RF RF
AMP
48 44 43 41
AGC & EQ
AUX AUX
B.P.F. 34
SWITCH
PEAK
39
PEAK &
BOTM
BOTTOM
38
A AT ADFM
2 30 31 33
AMP
B
3 I-V TLB 27
C
AMP
4
D
ABCD ABCD
5
37
AMP
E
6 I-V
FE
FOCUS
F
35
AMP
7
ERROR AMP
TE
26
FI
TRACKING
8
SE
ERROR AMP
29
FO
9
PD
10
SWDT
18
SCLK
19
AAPC
14 APC XLAT
20
XRST
17
11
4
Q151 IC122
DIGITAL SERVO SIGNAL
2
PROCESSOR
IC121 (2/2)
6 67 77 76
33
SPFD
19
ANALOG MUX
SPRD
APC
20
APC PWM
84 COMP./
GENERATOR
FILTER
A/D CONVERTER
SFDR
17 92
SRDR
18 91
TFDR
31 86
TRDR
32 85
COUT/SHCK/
PROCESSOR
FFDR
6 87
FRDR
5 89
SERVO
AUTO
3
SEQUENCER
– 21 –
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER
IC121 (1/2)
EFMO EFM
45 REGISTER
MODULATOR
FILI SUBCODE
62
P TO W
PROCESSOR
CLTV
60
34MHz
PCO
PLL
61
SUBCODE Q
FILO
READER/
63
GENERATOR
RFI EFM
58 REGISTER
COMPARATOR
DEMODULATOR
ASYI
56
ASYO
32K
55
RAM
EFM
DIGITAL
PLL
XPLCK
44
WFCK
41
EFM-SYNC
GTOP
42 DETECTOR/
GFS
PROTECTOR
43
4 2
IC102 FMCK
22
ADIP
ADFG
ADIP
82 DEMODU-
DIGITAL
DECODER
LATOR
CLV
PROCESSOR
23 13
71 79
66 64 65 68 78
68 69 70 76 66
S101
(LIMIT)
OFTRK
98
DFCT
OFTRK/ 3
FOK
DFCT/FOK/
2
COUT (PLAY POSITION)
99
FS256 SHCK
4
FS256
1
SENS
SENS
12
CONTROL
DODT
27
PEAK
DETECT
DIDT
28
DIGITAL
AUDIO
DIN
IN/OUT
21
DOUT
20
DIFO
53
DICV
51
DIN PLL
DIPD
(22MHz)
49
DIFI
52
DTI
29
AUDIO
DATA
DTO
CONTROL
30
ECC
C2PO
ENCODER/ 31
DECODER
LRCK
33
BCK
32
MCLK
36
XBCK
TIMING
37
GENERATOR WDCK
39
RFCK
40
FS4
90
XTAI
35
CLOCK
XTAO
GENERATOR
34
CPU INTERFACE
93 94 14 15
8 9 10 11 16 24
5 65
SYSTEM CONTROLLER
IC101 (1/4)
80 58 57 59 77 78
S191 S192 S193 S102
S191 S192 S193
(PACK OUT) (REC POSITION)
S102
(REFLECT/PROTECT DETECT)
LOW REFELECT RATE/ HIGH REFELECT RATE/
UN-PROTECT WRITE PROTECT
– 22 –
MDS-DRE1
SCTX
A (Page 23)
DODT
B
(Page 23)
DATA
C
(Page 23)
BCK, LRCK, C2PO
D
(Page 23)
512FS
E (Page 24)
SWDT, SCLK, XLAT, SRDT
F
(Page 23)
XRST
G (Page 24)
SCL
H
(Page 23)
SCL 75 6 SCL
SDA
SDA 74 5
EEPROM
IC171
61 60
LOADING MOTOR DRIVE
IC901
IN1 OUT1
9 4
MOTOR M191
M
IN2 OUT2
DRIVE (LOADING)
10 2
• SIGNAL PATH
: PLAY
: REC