Diagrams; Block Diagram - Md Servo Section - Sony MDS-JA20ES Service Manual

6-1. BLOCK DIAGRAM – MD SERVO Section –
HR901
OVER WRITE HEAD
I I
1
J J
2
F
B
C B
I J
D A
A
A
4
B
5
E C
AMP
6
DETECTOR D
7
C
D
E
E
8
F F
AMP
9
LASER DIODE
AUTOMATIC
APC
ILCC
POWER LD/PD
11
CONTROL AMP
Q162, 163
PD LD
LASER ON
PD
PD
SWITCH 10
Q101
OPTICAL PICK-UP
(KMS-260A/J1N)
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC152
PSB 16
6 OUT4F IN4R 3
M101
M
(SPINDLE)
8 OUT4R IN4F 4
27 OUT2F IN2F 29
M102
M
(SLED)
25 OUT2R IN2R 30
2-AXIS
DEVICE
FCS+
21 OUT1F IN1F 19
23 OUT1R IN1R 18
FCS–
TRK+
12 OUT3F IN3F 14
TRK–
10 OUT3R IN3R 15
MOD
HF MODULE
05
SECTION 6

DIAGRAMS

OVER WRITE
HEAD DRIVE
IC181, Q181, 182
SCTX
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
48 47
RFO AGCI RF
RF AGC
RF AMP 46 40 38
& EQ
EQ
B.P.F. AUX
33
WBL
3T TEMP
PEAK
37
PEAK &
BOTM
BOTTOM
36
WBL
ADFM ADIN
ADFG
AT
29 30 32
B.P.F.
AMP
I-V
ABCD
ABCD
35
AMP
FE
FOCUS
34
ERROR AMP
TE
26
I-V TRACKING
SE
ERROR AMP
28
COMMAND
SERIAL/
PARALLEL
V-I CONVERTER,
CONVERTER DECODER
12 20 16 17 18
SPFD
SPRD
65 75 74
13 67 66 63
RECP
APCREF AUTOMATIC
83
POWER
CONTROL
SFDR ANALOG MUX
92
SRDR
91
A/D CONVERTER
DIGITAL
SERVO
SIGNAL
FROM CPU
PROCESS
FFDR
88 INTERFACE
FRDR
89
AUTO
SEQUENCER
TFDR
86
DIGITAL SERVO
TRDR
85
SIGNAL PROCESSOR
IC121 (2/2)
– 35 –
15
TX
EFMO
100
FILI
60
PCO
59
PLL
CLTV
62
FILO
61
ASYO
53
ASYI
54
COMPA-
RFI
RATOR
57
SUBCODE
ADIP PROCESSOR
78 DEMODULATOR/
DECODER
CPU
F0CNT SPINDLE
INTERFACE
79
SERVO
94 93 10 12 11 14 9 8
18 5 20 55 32
56 LDON
53 DIG-RST
59
WR-PWR
69 MOD
78 79
64
5 6
IN1 IN2
LOADING
MOTOR DRIVE
IC400
OUT1 OUT2
2 10
M
M10
(LOADING)
XLRF XLAT
80
CKRF SCLK
81
DTRF SWDT
82
HF MODULE
SWITCH
IC103, Q102 – 104
IC121 (1/2)
ADDT
25
DATAI
22
DIGITAL SIGNAL PROCESSOR,
SAMPLING
XBCKI EFM/ACIRC ENCODER/DECODER,
RATE
24
SHOCK PROOF MEMORY CONTROLLER,
CONVERTER
LRCKI
ATRAC ENCODER/DECODER
23
IC121 (1/2)
DIGITAL IN
DIN0
19
DIGITAL
DIN1
20
AUDIO
DOUT DIGITAL OUT
INTERFACE
21
DADT
26
DADT, BCK, LRCK
28 27 29
512FS
OSCI
16 OSC
CLOCK
OSCO IC123
GENERATOR
17
INTERNAL BUS
MONITOR
CONTROL
5 6 7 1 2 3 4
XOE
43
XWE
47
SWDT
XRAS
46
SCLK
XCAS
44
SWDT, SCLK
31 33 70 67 54 52 60
SCTX 65
SYSTEM CONTROLLER
IC800 (1/2)
LIMIT-IN 68
PLAY2
77
REFERENCE
B+ REC 76
VZ 4 VOLTAGE SWITCH
Q400, 401
PLAY1 75
80 LD-LOW
OPEN 74
REFLECT 57
PROTECT 58
– 36 –
MDS-JA20ES
ADDT
A (Page 37)
B (Page 38)
C
(Page 38)
D
(Page 37)
512FS
E (Page 37)
D-RAM
IC124
16 XOE
3 XWE
4 XRAS
XCAS
17
F (Page 37)
• SIGNAL PATH
: PLAY (ANALOG OUT)
: PLAY (DIGITAL OUT)
: REC (ANALOG IN)
: REC (DIGITAL IN)
S101
(LIMIT IN)
S13
(PLAY POSITION)
S12
(REC POSITION)
S11
(CHUCKING IN)
S10
(TRAY OPEN)
S102
(REFLECT/PROTECT DETECT)
HIGH REFELECT RATE/
WRITE PROTECT
LOW REFELECT RATE/
UN-PROTECT