Sony HCD-MD555 Service Manual ▷ View online
HCD-MD555
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAMS
— MD SECTION —
— 53 —
— 54 —
F
E
C
D
B
A
Q162,163
LASER
DIODE
DETECTOR
OPTICAL PICK-UP BLOCK
(KMS-260A/JIN)
LD
POWER
PD
LD
E
F
M
M
TRACKING
COIL
FOCUS
COIL
SLED
MOTOR
M682
SPINDLE
MOTOR
M681
TRK+
TRK-
FCS+
FCS-
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
16
VCC
VC
• Signal Path
• RCH is omitted
IC152
J
I
A
B
B
C
D
I
J
RF
AMP
2
ILCC
APC
DRIVE
1
4
5
6
7
8
9
11
46
ADIN
40
I-V
AMP
AT
AMP
B.P.F
B.P.F
29
ADFM
30
ADFM
ADFG
32
RF AGC
EQ AMP
38
33
PEAK &
BOTTOM
37
36
V-I
CONV.
20
47
48
MORFO
MORFI
I-V
AMP
ABCD
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
LASER ON
SWITCH
Q162,163
Q101
LD/PD
AMP
10
35
34
28
SERIAL/PARALLEL
CONV. DECODER
12
17
16
18
RF AMP
FOCUS/TRACKING ERROR AMP
IC101
I
J
C
B
A
A
D
E
F
RFO
AGCI
RF
AUX
PEAK
BOTM
FOCNT
ABCD
FE
SE
26
TE
APC
PD
APC REF
SWDT
SCLK
XLA
T
COMMAND
OUT3F
12
OUT3R
10
OUT1F
21
OUT1R
23
OUT2F
27
OUT2R
25
OUT4F
6
OUT4R
8
14
IN3F
15
IN3R
19
IN1F
18
IN1R
29
IN2F
30
IN2R
4
IN4F
3
IN4R
16
PSB
HF
MODULE
MOD
SPFD
SPDR
86
85
88
89
92
91
83
PWM GENERA
TOR
AUTO
SEQENCER
82 81 80
DTRF
CKRF
XLRF
APCREF
FROM CPU
INTERFACE
DIGITAL
SERVO
SIGNAL
PROCESSOR
AUTOMATIC
POWER
CONTROL
A/D
CONV.
67 63 64 65 66 75 74
ANALOG
MUX
AUX
PEAK
BOTM
ABCD
FE
TE
SE
HF MOD
SWITCH
Q102-104,IC103
13
RECP
DIGITAL SERVO
SIGNAL PROCESSOR
IC121(2/2)
57
78
54
53
COMP.
RFIN
ASYI
ASYO
ADFG
ADIP DEMO/
DECODER
62
59
61
60
FIL
TER
PLL
SPINDLE
SERVO
ASYO
FILI
FILO
CLTV
PCO
79
FCONT
SUBCODE
PROC.
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMOR
Y CONTROLLER
A
TRAC
ENCODER/DECODER
OVER WRITE
HEAD DRIVE
HEAD DRIVE
IC181,Q181,182
DIGITAL
AUDIO
INTERFACE
SAMPLING
RATE
CONV.
19
21
D IN
D OUT
IC401
DIGITAL
SIGNAL SW
IC402
OPTICAL
DIGITAL IN
IC401
100
EFMO
CLOCK
GEN.
27
28
29
XBCK
LRCK
FS256
DIGITAL
SIGNAL SW
MONITOR
CONTROL
INTERNAL BUS
DRAM
DRAM
43
47
46
44
XOE
XWE
XRAS
XCAS
25
ADDT
IC124
1
2
3
4
5
6
7
8
9
15
14
12
11
93
94
SPFD
SPRD
SQSY
DQSY
XINT
TX
SENS
SRDT
XLA
T
SCLK
SWDT
MNT0
MNT1
MNT2
MNT3
26
DADT
MD MECHANISM CONT.
IC316
MNT0
82
MNT1
81
MNT2
80
MNT3
79
SWDT
35
SCLK
37
XLAT
66
SRDT
36
SENS
78
SCTX
72
XINT
73
DQSY
75
SQSY
27
LD ON
57
MOD
65
WRPWR
67
DIG RST
77
10
XRST
SPFD
SPRD
5
6
EEPROM
IC171
X302
10MHz
SDA
88
SCL
87
X IN
15
X OUT
13
S5
S4
S3
S2
85
DISK 1
S1
DSP
IC121(1/2)
A
H
DIGITAL OUT
OPT SELECT
: MD PLAY
: MD REC(ANALOG)
: MD REC(DIGITAL)
HR901
OVER WRITE HEAD
RESET
IC400
PHOTO
COUPLER
IC403-405
22
L3 DATA
21
L3 CLK
69
L3 MODE
L3 DATA
L3 CLK
L3 MODE
XBCK
LRCK
FS256
A/D,D/A CONV.
IC201
SDTO
18
SDTI
19
SCLK
16
LRCK
17
MCLK
12
L3 DATA
15
L3 CLK
14
L3 MODE
13
2
VIN L1
4
VIN R1
6
VIN L2
8
VIN R2
26
VOUT L
24
VOUT R
R-CH
L3 DATA
L3 CLK
L3 MODE
XBCK
LRCK
FS256
R-CH
R-CH
D
MD PLAY L
C
(PAGE 57)
MD REC L
1
WM OUT
100
WM IN
19
WM SYNC
2
WM CLK
45
WM INV
IC2000
IC401
REMOTE
DATA
L-CH
R-CH
WM I/O
J1
59
PROTECT SW
S683
58
REFLECT SW
S682
63
LIMIT IN SW
S681
91
HEAD DOWN SW
S7
92
HEAD UP SW
S6
86
DISK 2
90
DISK 3
89
DISK 4
84
DISK 5
28
RESET SW
S571
52
HOME SW
S570
42
HEAD UP
41
HEAD DOWN
1
OUT1
7
OUT2
FIN
4
RIN
5
M
MOTOR DRIVE
IC172
M4
OVER WRITE HEAD
UP/DOWN MOTOR
24
ELE UP
26
ELE DOWN
7
OUT2
1
OUT1
RIN
5
FIN
4
M
MOTOR DRIVE
IC550
ELEVATOR
UP/DOWN MOTOR
54
LD IN
55
LD OUT
7
OUT2
1
OUT1
RIN
5
FIN
4
M
MOTOR DRIVE
IC551
LOADING
MOTOR
IC570
IC570
ELEVATOR
POSITION
SENSOR
SENSOR SW
83
SENSOR
39
PH570
ELEVATOR
POSITION
SENSOR
PH571
IC570
IC570
SENSOR2
40
12
SYSTEM RESET
18
PWR DWN
3
LEVEL L
47
OUT SEL1
I2C DATA
30
I2C CLK
29
I2C BUSY
20
I
AC DET
J
(PAGE 57)
LEVEL L
MD BACKUP
+3.3V
G
(PAGE 59)
I2C DATA
I2C CLK
I2C BUSY
(PAGE 59)
(PAGE 57)
(PAGE 56)
(PAGE 57)
Q403
Q400
Q402
Q401
Q404
NC
INV./NON INV.
SWITCH
51
CHACK IN SW
53
CHACK OUT SW
HCD-MD555
— CD SECTION —
— 55 —
— 56—
E
F
A
B
C
D
DRIVE
Q101
LD
RF EQ
AMP
5
7
8
6
SUMMING
AMP
RF
ERROR
AMP
FOCUS
ERROR
AMP
TRACKING
11
10
APC LD
AMP
3
4
22
13
VC
BUFFER
VC
12
16
14
RF AMP
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
LASER
DIODE
DETECTOR
OPTICAL PICK-UP BLOCK
(KSS-213BA/F-NP)
A
C
D
B
E
F
LD
POWER
PD
LD
PD
LD
A
C
D
B
E
F
TE
FE
RF
INTEG-
RATOR
INTEG-
RATOR
LD ON
5
6
2
3
23
24
12
11
14
13
17
18
25
15
16
M
M
TRACKING
COIL
FOCUS
COIL
SLED
MOTOR
M102
SPINDLE
MOTOR
M101
T+
T-
F+
F-
SD+
SD-
SP+
SP-
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
21
HOLD SW
16
VCC
VC
: MD REC(DIGITAL)
• Signal Path
• RCH is omitted
: CD PLAY
20
MUTE
IC102
IC103
IC101
60
D OUT
RF AC
51
ASYI
49
ASYO
48
RF DC
43
FE
39
TE
41
SE
40
TFDR
30
TRDR
31
FFDR
32
FRDR
33
SRDR
29
SFDR
28
MDP
26
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
XLON
14
VC
38
72
L OUT
75
R OUT
5
DATA
R-CH
DATA
29
6
XLAT
XLT
31
7
CLOK
CLK
30
1
SQSO
SUBQ
68
2
SQCK
SQCK
70
9
SCLK
8
SENS
SENS
74
20
SCOR
SCOR
46
XTAI
66
XTAO
67
SSTP
27
X101
16.9344MHz
S101
LIMIT
LIMIT
3
XRST
BDRST
10
XMODE
71
CD MECHANISM CONT.
IC300
SRAM
IC302
5
RE
6
OE
20
MID OUT SW
21
MID IN SW
19
IN SW
18
OUT SW
32
LID OUT SW
26
INIT SW
60
CNT SW
S701
S703
S704
S708
S702
S705
S706
23
ENCODER 0
DISC SENS
59
ROTARY
ENCODER
S707
16
CLP POS
17
CLP ENG
3
6
7
2
M
M701
CLAMP
MOTOR
MOTOR
DRIVER
DRIVER
IC701
15
LODENG
14
LOD POS
3
6
7
2
M
M702
LOADING
MOTOR
MOTOR
DRIVER
DRIVER
IC702
24
ENCODER 1
25
ENCODER 2
DISC
SENSOR
Q703,D702
Q701
A
B
DIGITAL OUT
CD L OUT
X1
39
X2
38
X300
12.5MHz
48
AC CUT
43
RESET
CE
Q300
E
(PAGE 59)
F
AC CUT
RESET
I2C DATA
73
I2C CLK
75
I2C BUSY
44
BUFFER
Q506
BUFFER
Q507
BUFFER
Q508
LY
7
6
SY
LX
2
3
SX
1
CN502
4
5
CONTROL1
6
3
2
IIC BUS BUFFER
IC504
G
(PAGE 59)
I2C DATA
I2C CLK
I2C BUSY
43
BD PWR
N
BD PWR
(PAGE 59)
(PAGE 59)
(PAGE 54)
(PAGE 57)
HCD-MD555
— AUDIO SECTION —
— 57 —
— 58 —
TUNER UNIT
MD REC L
C
(PAGE 54)
MD PLAY L
D
CD PLAY L
B
L
R
L
R
L
R
DVD/
VIDEO IN
TAPE IN
TAPE OUT
J100
J101
R-CH
R-CH
R-CH
FM 75
Ω
AM
FM
AM
L OUT
COMP
R OUT
D OUT
D IN
CLK
CE
ST MUTE
STEREO
TUNED
ANTENNA
64
69
68
67
66
65
INF2
INA2
INB2
INC2
IND2
INE2
INPUT
SELECT
LPF O
61
62
LPF 1
SOUND
CONTROL
GRAPHIC
0dB/5dB
AMP
EQUALIZER
57
RECB2
58
RECA2
F OUT2
42
41
VOL IN2
VOLUME
CONTROL
BASS BOOST
CONTROL
CPU
INTERFACE
32 34
39 38
33
D
ATA
CLOCK
LA
TCH
BB A2
BB B2
BUF OUT2
AUDIO
CONTROL
IC100
36
FEED BACK
SWITCH
Q100
MUTE
Q101
MUTE
CONT
CONT
MUTE
CONT
CONT
POWER
AMP
IC801
Q101
Q510,511
Q505
D151
OVER LOAD
DETECT
Q801
OVER LOAD
DETECT
SWITCH
Q833
DC IN
DETECT
Q831,832
RELAY
DRIVE
Q830,834,835
RY800
J20
PHONES
TB800
R CH
SPEAKER
R CH
31
TUNED
30
STEREO
29
ST MUTE
32
ST CE
35
ST CLK
33
ST DOUT
34
ST DIN
RDS
AEP, UK MODEL
IC630,631
X630
4.332MHz
R-CH
SPEANA
IC502
17 16 15 14
4
3
SYSTEM CONTROL
IC500 (1/2)
18
RDS DA
TA
17
RDS CLK
56
SPEANA 1
OPT SEL
H
(PAGE 54)
Q509
60
REC LEVEL
78
SPEANA SW
LEVEL L
J
IC503
16
57
SPEANA 2
58
SPEANA 3
59
SPEANA 4
69
AMP DA
TA
70
AMP CLK
77
AMP CE
98
LINE MUTE
94
STK MUTE
93
SP RELA
Y
6
OPT SELECT
: TUNER
: CD PLAY
• Signal Path
• RCH is omitted
: MD PLAY
: MD REC(ANALOG)
(PAGE 54)
(PAGE 56)
(PAGE 54)
MD CD POWER
M
(PAGE 59)
R
L
HCD-MD555
— POWER SECTION —
— 59 —
— 60 —
RESET
91
CD RESET CHECK
F
(PAGE 56)
SYSTEM CONTROL
IC500(2/2)
66
FL DATA
ENC VOL A
23
VOL
ENCODER
S701
KEY 1
53
FUNCTION
KEY
S703-717,748
ENC VOL B
24
ENC JOG A
25
JOG
ENCODER
S702
ENC JOG B
26
STANDBY LED
7
KEY 2
54
FUNCTION
KEY
S718-733
KEY 3
55
FUNCTION
KEY
S737-747
FUNCTION
KEY
S734-736
SIRCS
47
SIRCS
IC705
IC705
LED
DRIVE
Q706
LED
DRIVE
Q707-708
STANBY
POWER ON
MD
ELEVATOR
D701
TIMER LED
8
LED
DRIVE
Q705
TIMER SELECT
D725
D702
X1
39
X2
38
XT1
42
XT2
41
X500
12.5MHz
X501
G
(PAGE 54,56)
I2C DATA
73
I2C CLK
75
I2C BUSY
72
67
FL CLK
62
FL CS1
SDATA
16
SCK
15
CS
14
RST
13
62
61
12
1
64
63
.
59
33
31
23
.
SEG0
SEG35
.
.
DIG14
DIG15
DIG0
DIG13
GRID
DRIVER
Q701,702
FL DRIVER
(UPPER)
IC701
20
X OUT
21
X IN
OSC
C705
R706
SDATA
16
SCK
15
CS
14
RST
13
12
11
10
1
64
61
.
59
33
31
23
.
SEG0
SEG35
.
DIG0
DIG1
DIG2
DIG15
GRID
DRIVER
Q703,704
FL DRIVER
(LOWER)
IC702
21
X IN
76
FL CLEAR
63
FL CS2
FLUORESCENT
DISPLAY
IC701
FL701
LED DRIVER
IC703
79
LED DATA
DATA
15
CLK
16
STB
17
80
LED CLK
81
LED CS1
CLR
18
82
LED CS2
LED DRIVER
IC704
DATA
15
CLK
16
STB
17
CLR
18
83
LED CLEAR
UPPER/
LOWER
SWITCH
Q914-917,920,921
Q919
Q918
-33V
SWITCH
Q960,961
VF COM
VF LOWER
VF UPPER
VG(-33V)
FL DRIVER
Q918
Q963
POWER
CONTROL
Q504
+5V
REG
IC960
1
3
D500
D501
RESET
IC501
1
3
SUB +5V
SYSCON
D966-969
D960-963
T961
+5V
REG
IC901
1
3
BACKUP
SWITCH
+5V
REG
IC902
1
3
+B
SWITCH
Q911,912,913
Q501-503
Q505-507
Q505-507
MD +5V
CD +5V
HEAD +5V
+5V
REG
Q908,909
D302
+3.3V
REG
Q910
D911
D910
D+5V
SYSCON
D +5V
FL DRIVER
+3.3V
MD BACKUP
MD +3.3V
+3V
REG
IC191
D +3V
+7.6V
REG
+5.6V
D900-903
D908
Q990-994
T960
+5.6V
REG
IC900
1
3
D915
-7V
REG
IC903
2
3
+10V
REG
+7V
REG
Q900,901
Q903
LED +5.6V
D +7.6V
MD M +5.6V
FL D+5V
TUNER +10V
AU +7V
AU -7V
RELAY
DRIVE
DRIVE
Q964
RY960
AC IN
92
MAIN TR RELAY
RESET
SWITCH
Q500
99
VG POWER
46
AC CUT
D502
43
RESET
96
MD CD POWER
95
MD CD POWER
RESET
IC301
1
3
D303
RESET
SWITCH
Q301
D308
D305
D306
AC CUT
E
AC DET
I
BD POWER
N
VP
32
VG
VP
32
VG
(PAGE 54)
(PAGE 56)
(PAGE 56)
MD CD POWER
M
(PAGE 58)
16
D703-705,707
D712-714
D718-720
D718-720
D708-711
D715-717
D721-724
D715-717
D721-724
REG
RY961
JW964
JW960
JW963
F960
S960
JW965
US, AEP, UK MODEL
US, AEP, UK MODEL
US, AEP, UK MODEL
EXCEPT
US MODEL
US MODEL
US, AEP, UK MODEL
JE, HK,
SP, MY
SP, MY
MODEL
F964
F961
SP, MY MODEL
US, AEP,
UK, JE,
UK, JE,
HK MODEL
JW901
VOLTAGE
SELECTOR
US MODEL
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