Block Diagram - Md Section - Sony HCD-MD1EX - System Service Manual

HCD-MD1EX
7-2. BLOCK DIAGRAM – MD Section –
OVER WRITE
HEAD DRIVE
IC181, Q181, 182
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
6
DETECTOR D
7
C
D
E
E
8
F F
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
M901
M
(SPINDLE)
8 OUT4R IN4F 4
27 OUT2F IN2F 29
M902
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
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER, 2M BIT D-RAM
IC121 (1/2)
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
AMP 35
AMP
FE
FOCUS
34
ERROR AMP
TE
26
I-V TRACKING
SE
AMP ERROR AMP
28
COMMAND
SERIAL/
PARALLEL
V-I CONVERTER,
CONVERTER DECODER
12 20 16 17 18
+3.3V
SPFD
SPRD
64 74 73
13 75 66 65
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
IC121 (1/2)
TX
EFMO
100
FILI
59
PCO
58
PLL
CLTV
61
FILO
60
ASYO
51
ASYI
52
COMPA-
RFI
RATOR
55
SUBCODE
ADIP PROCESSOR
78 DEMODULATOR/
DECODER
CPU
F0CNT SPINDLE
INTERFACE
79
SERVO
94 93 10 12 11 14 9 8
20 5 23 41 36
49 LDON
40
DIG-RST
44
WRPWR
50 MOD
51 52
63
62
10
9
IN1 IN2
VREF
LOADING
MOTOR DRIVE
IC153 VC1
OUT1 OUT2
4 2
M
M903
XLRF XLAT
(LOADING)
80
CKRF SCLK
81
DTRF SWDT
82
HF MODULE
SWITCH
IC103, Q102 – 104
ADDT
23
SAMPLING
RATE
CONVERTER
DIN
WAVE SHAPER
DIGITAL
21
IC401
AUDIO DOUT
22
INTERFACE
DADT
24
26 25 27
D-RAM
OSCI
16
CLOCK
OSCO
GENERATOR
17
22.5792MHz
INTERNAL BUS
MONITOR
CONTROL
5 6 7 1 2 3 4
XOE
41
XWE
45
XRAS
44
XCAS
42
35 37 38 48 47 46 45
SCTX 42
MD MECHANISM CONTROLLER
IC316 (1/2)
LIMIT-IN 59
PB-P 61
REC-P 60
7
REFLECT 55
6
PROTECT 54
53
LD-LOW
CHUCK-IN 58
REFERENCE
VOLTAGE SWITCH
PACK-OUT 57
Q350
– 36 –
(Page 37)
ADDT
C
DOUT
B
(Page 34)
DADT, BCK, LRCK, FS256
D
(Page 37)
X101
D-RAM
IC124
16 XOE
3 XWE
4 XRAS
XCAS
17
S681
(LIMIT IN)
S687
(PB POSITION)
S688
(REC POSITION)
S682
(REFLECT)
S683
(PROTECT)
S685
(CHUCKING IN)
S686
(PACK OUT)
SIGNAL PATH
: MD PLAY
: MD REC
: CD PLAY (DIGITAL OUT)