Sony HCD-MD555 Service Manual page 53

7-1. BLOCK DIAGRAMS
— MD SECTION —
HR901
OVER WRITE HEAD
OPTICAL PICK-UP BLOCK
FOCUS/TRACKING ERROR AMP
(KMS-260A/JIN)
48 47
VCC
VC
I I
1 RFO
RF
J
J
AMP
2
F
C
B
C B B
I J
D A
A A A
4
D B
5
I-V
AMP
C
AMP
E 6
D
7
DETECTOR
E
E
8
I-V
F
F
9 AMP
Q162,163 Q162,163
ILCC APC APC LD/PD
11
DRIVE AMP
LD
LASER
DIODE
PD
Q101
PD
LASER ON
10
SWITCH
LD
POWER
12
Q102-104,IC103
MOD
HF HF MOD
MODULE SWITCH
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
IC152
TRK+
12 OUT3F IN3F 14
TRACKING
COIL
TRK-
10 OUT3R IN3R 15
FCS+
21 OUT1F IN1F 19
FOCUS
COIL
FCS-
23
OUT1R IN1R 18
16
27 OUT2F IN2F 29
M102
SLED M
MOTOR
25 OUT2R IN2R 30
SPFD
6 OUT4F IN4F 4
M681
SPINDLE M
MOTOR SPDR
8 OUT4R IN4R 3
PSB 16
• RCH is omitted
• Signal Path
: MD PLAY
: MD REC(ANALOG)
: MD REC(DIGITAL)
SECTION 7
DIAGRAMS
IC181,Q181,182
EFMO
OVER WRITE
100
HEAD DRIVE
RF AMP
IC101
AGCI
RF AGC RF RFIN
46 40 38 57
EQ AMP
ASYI
54
ASYO ASYO
AUX 53
B.P.F 33
PEAK
37 FILI
PEAK &
60
BOTM
BOTTOM 36
FILO
61
CLTV
FOCNT 62
V-I
20 PCO
CONV. 59
AT ADFM ADFM ADIN ADFG ADFG
B.P.F 29 30 32 78
ABCD
FCONT
ABCD
35 79
AMP
FE
FOCUS
34
ERROR AMP
TE
26
TRACKING
SE
ERROR AMP 28
COMMAND
SERIAL/PARALLEL
CONV. DECODER
16 17 18
82 81 80 67 63 64 65 66 75 74
APCREF FROM CPU
AUTO ANALOG
83
SEQENCER INTERFACE
MUX
TFDR
86
DIGITAL
TRDR SERVO A/D
85
SIGNAL CONV.
PROCESSOR
FFDR
88
FRDR
89
AUTOMATIC
POWER RECP
13
CONTROL
SFDR
92
DIGITAL SERVO
SIGNAL PROCESSOR
SRDR
91
IC121(2/2)
— 53 —
DSP
IC121(1/2)
ADDT
25
DADT
COMP. 26
SAMPLING
RATE
CONV.
D IN
DIGITAL
PLL 19
AUDIO D OUT
21
INTERFACE
ADIP DEMO/ SUBCODE
DECODER PROC.
XBCK
28
CLOCK LRCK
DRAM
27
SPINDLE
GEN.
FS256
SERVO
29
INTERNAL BUS
XOE
43
XWE
47
DIGITAL MONITOR XRAS
46
SIGNAL SW CONTROL
XCAS
44
94 93 10 11 12 14 15 9 8 7 6 5 4 3 2 1
PH570
ELEVATOR
POSITION
SENSOR
PH571
ELEVATOR
POSITION
SENSOR
G
(PAGE 59)
A/D,D/A CONV.
IC201
18 SDTO
19 SDTI
XBCK
16 SCLK
LRCK
17 LRCK
FS256
12 MCLK
L3 DATA
15 L3 DATA
L3 CLK
14 L3 CLK
L3 MODE
13
L3 MODE
IC401
OPTICAL
DIGITAL IN
IC402
IC401
DIGITAL
SIGNAL SW
XBCK
LRCK
FS256
MD MECHANISM CONT.
IC316
L3 DATA
L3 DATA 22
L3 CLK
DRAM
L3 CLK 21
L3 MODE
IC124
L3 MODE 69
Q400
WM OUT 1
IC401
Q404
WM IN 100
WM SYNC 19
IC2000 Q402
5 88 SDA INV./NON INV.
EEPROM NC
WM CLK 2
IC171 6 87 SCL SWITCH
WM INV 45
82 MNT0
81 MNT1 DISK 1 85 S1
80 MNT2
S2
DISK 2 86
79 MNT3
DISK 3 90 S3
35 SWDT
37 SCLK DISK 4 89 S4
66 XLAT
DISK 5 S5
84
36 SRDT
78 SENS HEAD UP SW 92 S6
72 SCTX HEAD DOWN SW 91 S7
73
XINT
S681
LIMIT IN SW 63
75 DQSY
REFLECT SW 58 S682
27
SQSY
PROTECT SW 59 S683
57 LD ON
HOME SW 52 S570
65 MOD
67 WRPWR
S571
RESET SW 28
MOTOR DRIVE
IC172
HEAD UP 42 4 FIN OUT1 1
M OVER WRITE HEAD
UP/DOWN MOTOR
HEAD DOWN 41 5 RIN OUT2 7
MOTOR DRIVE
IC551
LD IN 54 5 RIN OUT2 7
LOADING
M
15 X IN MOTOR
X302 LD OUT 55 4 FIN OUT1 1
10MHz
13 X OUT
CHACK IN SW 51
MOTOR DRIVE
IC550
77 DIG RST
ELE UP 24 5 RIN OUT2 7
M
UP/DOWN MOTOR
ELE DOWN 26 4 FIN OUT1 1
IC570 IC570
83
SENSOR SW
CHACK OUT SW 53
IC570
39 SENSOR
IC570
40 SENSOR2
RESET
MD BACKUP
SYSTEM RESET 12
IC400 +3.3V
I2C DATA
30 PWR DWN
I2C DATA 18
I2C CLK
29 I2C CLK
I2C BUSY
20 I2C BUSY LEVEL L 3
OUT SEL1 47
— 54 —
HCD-MD555
MD REC L
C
VIN L1 2 (PAGE 57)
VIN R1 4 R-CH
VIN L2 6
VIN R2 8 R-CH
MD PLAY L
D
(PAGE 57)
VOUT L 26
VOUT R 24 R-CH
DIGITAL OUT
A
(PAGE 56)
OPT SELECT
H
(PAGE 57)
R-CH
L-CH J1
WM I/O
Q403
DATA
REMOTE
PHOTO
Q401
COUPLER
IC403-405
M4
ELEVATOR
AC DET
I
(PAGE 59)
LEVEL L
J
(PAGE 57)