Block Diagrams; Bd Section - Sony MDS-B5 Service Manual

MDS-B5

5-2. BLOCK DIAGRAMS

—BD SECTION—

HR901
OVER
WRITE
HEAD
OPTICAL PICK-UP BLOCK
VC
(KMS-210A/J-N)
IC172
IV-AMP 2
3 1
BUFFER
IV-AMP 6 7
F 5
6
C B
J
I
D A
E
6
VC
RV101
E-F
BALANCE
VC
RV102 D101
LASER
POWER
Q101
LASER ON
PD
SWITCH
HIGH
POWER
4
LD
IC122
2
Q162,163
APC
L.F
MOD
Q164
HF
H.F
MODULE
MOD
SWITCH
SLED MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
TRACKING IC151
2
COIL
TRK -
2
FOCUS
25 29
COIL
DRIVER
TRK +
27 30
FCS +
12 14
FCS - DRIVER
10 15
M101
SLED +
2
SLED
M 21 17
SLED - DRIVER
MOTOR
23 18
SPDL -
6 DRIVER 4
• Signal path
:PB
:REC
PSB
:PB (DIGITAL IN)
16
:REC (DIGITAL OUT)
09
Q181,182
HEAD
DRIVE
+5V
RF AMP
IC101
46 45 44 43 42
RF AGC RF
41
& EQ
J
48
AUX AUX
RF AMP BPF 34
I
SW
47
BOTM
PEAK & 38
PEAK
BOTTOM
39
A
2
B
3 ABCD ABCD
37
C
AMP
4 IV AMP
D
5
E
6
FOCUS
IV AMP
F FE
ERROR
7 35
AMP
FI
8
ADFM
AT
FO 30
AMP
9
ADIN
31
VC +2.5V
1
GENERATOR
33
TEMPR TRACKING TE
16 +5V 26
ERROR
SE
29
AMP
TEMPI TEMP
12
AMP
TLB
27
PD
10 TFIL
SERIAL
APC
APCREF P-P 25
11
PARALLEL
THID
23
DECODER
TENV
22
14 15
17 18 19 20
4
SPINDLE MOTOR
COM
20
W
10
V
TFDR
DRIVER
13
U
TRDR
15
FRDR
FFDR
4 3
M102
SPINDLE MOTOR
SFDR
SRDR
SPFD
7
— 45 —
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER
IC121
14
18
2
11
3
OVER WRITE
14
HEAD DRIVE SUBCODE
9
15 IC181 PROCESSOR,
READER/
17 GENERATOR
1 19
4
2
IC182
EFMO
45 EFM
RFI
MOD/DEMOD
58
CLTV
60
FILI
EFM
62
FILTER TIMING
PCO
61
GENERATOR
FILO
63
5
4
PLL
SPFD
DIGITAL
94
CLV
SPRD
93
PROCESSOR
ADFG
ADIP ADIP
82
DEMOD DECODER
AUX
68
BOTM
65
5
PEAK
64
IC102
ABCD
ANALOG
4 2 66
MUX
FE
67
TE
77
SE
VC
76
VC
VC 69
SWDT
8
SCLK
4 9 CPU
XLAT
IF
10
XRST
16
REC
24
SRDT
11
DIRC SERVO
7
CONTROL
DRIVER
IC201
+5V
SPRD
+ 22 SERVO
AUTO
- 21
SEQUENCER
FG
1
9 16
51 52 49 53 15 21 20
SQSY
DIDT
28
DIGITAL
DIN
AUDIO
PLL
DODT
IN/OUT 27
DTO
AUDIO
30
REGISTER DATA
DTI
CONTROL 29
ECC
C2PO
ENCODER/ 31
DECODER
32K RAM
BCK BCK
TIMING
32 32
GENERATOR LRCK
33 33
&
FS4
90 90
CLOCK
XTAI
GENERATOR
35 35
XTAO
34
X120
22.5792MHz
DFCT
3
FOK
2
A/D 5 SHCK
PROCESSOR 4
CONV
OFTRK
98
COUT
99
WRPWR
6
APC
LDDR
LD
PWM 84
GEN
SERVO DSP/PWM GENERATOR
FOCUS/TRACKING/
SLED SERVO & PWM
6
SENS
CONTROL
12 85 86 87 89 91 92
6
— 46 —
SCTX
SQSY
DOUT
EEP ROM
IC171
SDA 5 SDA
SCL 6 SCL
DATA
A
C2PO
DIGITAL
SECTION
(Page 47)
BCK
LRCK
FOK
SHCK
WRPWR
LIMIT
S101
LIMIT IN
PROTECT
S102-1
-1
PROTECT
S102-2
REFLECT REFLECT
-2
M191 LOUT
M
LOADING MOTOR C
LIN
REMOTE
S192
INSW SECTION
LOAD IN DET
(Page 52)
S191
OUTSW
LOAD OUT DET
S193
CHKIN
CHUCKING IN
DET
LDON
MOD
(Page 49)
DUPLICATION
SECTION
DODT
B
SRDT
XLAT
5
XRST
SENS
SCLK
SWDT
A
DIGITAL
FG
SECTION
REC
(Page 47)