Block Diagram (1/2) - Sony MDS-EX77 Service Manual

MDS-EX77

6-1. BLOCK DIAGRAM (1/2)

HR901
OVER WRITE
HEAD
OVER WRITE OVER WRITE
HEAD DRIVE HEAD DRIVE
Q181, 182 IC181
Q180
OPTICAL PICK-UP BLOCK 48 47
(KMS-260A/J1N)
I I
1
J J RF AMP
2
VCC
DETECTOR
15
TEMPR
D101
F
TEMPI
TEMP
14
B
AMP
C B
I J
D A
A A
4
B
5
E I-V
C
AMP
6
D
7
C
D
E
E
8
I-V
F
F
9 AMP
LASER
DIODE
AUTOMATIC
ILCC APC
LD/PD
POWER CONTROL 11
AMP
Q162, 163
PD LD
LASER ON
PD PD
10
SWITCH
Q101
M901
M
(SPINDLE)
M902
2-AXIS M
(SLED)
DEVICE
(TRACKING) FCS+
FCS–
(FOCUS)
TRK+
TRK–
WRPWR
HF MODULE
HF MOD
SWITCH
MOD
MODULE
IC103, Q102-104
05
EFMO
100
PCO
58
FILI
59
RF AMP,
FILO
FOCUS/TRACKING
60
ERROR AMP CLTV
61
IC101
ASYO
51
ASYI
52
RFO
AGCI RF RFI
46 40 RF AGC EQ 38 55
WBL EQ
PEAK PEAK
37 62
PEAK &
BOTM BOTM
BOTTOM
36 63
BAND-PASS
AUX AUX1
FILTER
33 66
3T
ABCD ABCD
ABCD AMP 35 64
FE FE
FOCUS
34 65
ERROR AMP
TE TE
26 74
TRACKING
SE SE
ERROR AMP 28 73
WBL
BAND-PASS ADFG
AT AMP 29 30 32 78
FILTER
WBL
V-I F0CNT F0CNT
3T 20 79
CONVERTER
EQ
SWDT DTRF
SERIAL/
16 82
PARALLEL SCLK CKRF
COMMAND 17 81
CONVERTER,
XLAT XLRF
18 80
DECODER
12
BUFFER
IC122
SLED/SPINDLE MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
IC152
OUT4F IN4F
SPINDLE
6 3 1
MOTOR
OUT4R IN4R
8 4 2
DRIVE
OUT2F IN2F
SLED
27 29 3
MOTOR
OUT2R IN2R
25 30 4
DRIVE
OUT1F IN1F
FOCUS
21 19 5
OUT1R COIL IN1R
23 18 6
DRIVE
OUT3F IN3F
TRACKING
12 14 7
COIL
OUT3R IN3R
10 15 8
DRIVE
PSB 16
– 33 –
15
TX
ADDT
DIN
DIGITAL
PLL
AUDIO
DOUT
INTERFACE
SAMPLING RATE
CONVERTER
DADT
COMPA-
RATOR
XINT
SQSY
SUBCODE
DQSY
PROCESSOR
DIGITAL SERVO SIGNAL PROCESSOR,
DIGITAL SIGNAL PROCESSOR,
MNT0
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
MNT1
MONITOR
ATRAC ENCODER/DECODER
MNT2
IC121 CONTROL
MNT3
SENS
SRDT
SWDT
CPU
INTERFACE
SCLK
XLAT
XBCK
LRCK
OSCO
OSCI
ADIP
SPINDLE
DEMODULATOR/
A/D CONVERTER
SERVO
DECODER
SERVO
AUTOMATIC
DIGITAL
POWER
SIGNAL
CONTROL
PROCESS
AUTO
SEQUENCER
PWM GENERATOR
XRST
83 94 93 92 91 88 89 86 85 13 10
1 2 3 4 5 6 7 8
• SIGNAL PATH
: PLAY
: REC
: PLAY (DIGITAL OUT)
: REC (DIGITAL IN)
OPTICAL
INPUT
23
IC301
DIGITAL INPUT
WAVE SHAPER
21 SELECTOR
IC303
IC304
OPTICAL
INPUT
22
IC302
35 CD/VIDEO
89 SCTX
24
14 12 XINT
11 15
SQSY
12 16
DQSY
1 77 FOK
2 33 SHOCK
XBUSY
3 41 MNT2
SLOCK
4 42 MNT3
9 32 SENS
8 69 SRDT
5 68 SWDT
6 67 SCLK
7 90 XLATCH
SWDT, SCLK, LATCH
26 BCK
LRCK, BCK
25 LRCK
17
512FS
512FS
16 BUFFER
IC123
SYSTEM
CONTROLLER
(MECHANISM CONTROL)
IC401(1/2)
PB-P 38
REC-P 37
CHACK-IN 6
7
PACK-IN
PACK-OUT 8
LOADING MOTOR DRIVE
IC311
OUT REV
REFLECT 98
(R) IN
LOADING
10 6 94 LDOUT
M
MOTOR
2 5 95 LDIN
DRIVE
FWD
OUT
(F) IN PROTECT 97
M903
(LOADING) CLAMP
4
LIMIT-IN 96
REFERENCE
VOLTAGE SWITCH 39 LD LOW
Q311, 312
SDA 52 5 SDA
81 DIG-RST
SCL 53 6 SCL
80 WRPWR
86 MOD
75 LDON
– 34 –
ADDT
A
DADT
B
MD DIGITAL
OPTICAL
DIGITAL IN
CD PLAYER
MD DIGITAL
OPTICAL
DIGITAL IN
VIDEO 2
C
D
E
S687
(PB POSITION)
S688
(REC POSITION)
S685
(CHACKING IN)
+5V
S686
(PACK OUT)
S682
(REFLECT)
S683
(PROTECT)
S681
(LIMIT IN)
EEPROM
IC171
MDS-EX77