Sony DHC-MD777 / HMC-MD777 Service Manual ▷ View online
HMC-MD777
– 41 –
– 42 –
6-1.
BLOCK DIAGRAM – CD SERVO Section –
SECTION 6
DIAGRAMS
SQSO
SQCK
A/D
CONVERTER
CH1OUTF
CH1OUTR
5
4
7
2
1
5
10
6
6
7
8
16
14
13
10
11
22
4
3
51
49
48
43
24
41
40
39
64 15
28
29
30
31
32
33
24
25
23
5
6
2
3
17
18
15
16
E
B
C
D
A
D+5V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
RF EQ
AMP
TRACKING
ERROR AMP
RFO
FE
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
E
F
F I-V AMP
E I-V AMP
AUTOMATIC
POWER
CONTROL
Q101
APC LD
AMP
APC PD
AMP
LD
LD
PD
LASER DIODE
RFAC
ASYO
ASYI
ASYMMETRY
CORRECTION
CORRECTION
DIGITAL
PLL
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC101 (1/2)
DATA
XLAT
CLOK
14
5 6
MDP
26
7
8
XLON
3
XRST
DIGITAL
CLV
D/A
INTERFACE
SE
TE
FE
RFDC
FOCUS/TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4SIN
CH3RIN
CH3OUTF
CH3OUTR
CH2FIN
CH2RIN
CH1FIN
CH1RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
S101
(LIMIT)
IC304
CD DIGITAL OUT
SWITCH
IC405
(1/3)
IC405
CD DIGITAL OUT/
OPTICAL INPUT SIGNAL
SELECTOR
Q405
Q406
SWITCH
+5V
EMPH
WFCK
GFS
MIRR/DFCT/
FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
18
63
62
61
19
19
SENS
20
29
71
31
30
74 46
SCOR
SUBQ
SQCLK
DATA
XLT
CLK
SENSE
SCOR
1 2
68 70
SCLK
COUT
9 21
SSTP
27
FOK
22
23
MIRR
DFCT
TO SERVO INTERFACE
CH4OUTF
CH4OUTR
M101
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
CH2OUTF
CH2OUTR
COIL
DRIVE
M
M
M102
(SLED)
05
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
DIGITAL SERVO
PROCESSOR
IC101 (2/2)
OPTICAL PICK-UP
(KSS-213B/C2N)
LDON
21
HOLD SW
PD
I-V AMP
12
11
13
14
54
56 53
55
FILTER
FILO
PCO
CLTV
FILI
EFM
DEMODULATOR
SERIAL
IN
INTERFACE
DIGITAL
FILTER,
NOISE SHAPER
PWM
&
INTEGRATOR
BUFFER
LOW-PASS
FILTER
IC901
CLOCK
GENERATOR
OPTICAL
RECEIVER
IC404
IC404
OPTICAL IN
DIGITAL IN
TIMING
LOGIC
DIGITAL
OUT
INTERNAL BUS
16K
RAM
ERROR
CORRECTOR
SUBCODE
PROCESSOR
60
2
4
1
BUSD0
LPH (XMODE)
10
BDRST
XTAI
X101
16.9344MHz
AIN1
AIN2
AOUT1
AOUT2
TO MIRR/DFCT/
FOK DETECTOR
FOK DETECTOR
PCMD
BCK
LRCK
C2PO
C2PO
DOUT
33
66
XTAO
67
70
77
LOUT1
LOUT2
72
75
71
76
J901 (1/2)
L
CD ANALOG OUT
R
10
8
9
IC405
(2/3)
1
3
2
IC405
(3/3)
5
6
OPT SEL
(Page 44)
(Page 44)
(Page 48)
4
D
CS/BS SEL
E
CD DIGITAL/
OPTICAL IN
B
S702
S702 (LID)
(ON: When CD lid is close.)
(ON: When CD lid is close.)
S701 (MID OUT)
(ON: When tray is going to open/close.)
(ON: When tray is going to open/close.)
S708 (OUT)
(ON: When tray is open.)
(ON: When tray is open.)
S704 (IN)
(ON: When sub tray set to play position.)
(ON: When sub tray set to play position.)
S703 (MID IN)
(ON: When sub tray move between tray and stocker.)
(ON: When sub tray move between tray and stocker.)
S705 (INIT)
(ON: When elevator down to buttom.)
(ON: When elevator down to buttom.)
S706 (COUNT)
(ON: When elevator up/down each sub tray stock position.)
(ON: When elevator up/down each sub tray stock position.)
S701
S708
PANEL SW
MIDOUT SW
32
20
OUT SW 18
S704
S703
IN SW 19
MIDIN SW 21
S705
S706
INIT SW 26
CNT SW 60
ELEVATOR
UP/DOWN MOTOR DRIVE
IC701
IN1
IN2
OUT1
OUT2
3
6
16
17
7
2
MOTOR
DRIVE
LEVEL SHIFT
Q701
DISC IN DETECT
SENSOR
D704, Q703
ROTARY
ENCODER
S707
M
M701
(ELEVATOR UP/DOWN)
LOADING MOTOR DRIVE
IC702
IN1
IN2
LOD NEG
DISC SENS
ENCODE0
ENCODE1
ENCODE2
OUT1
OUT2
3
6
15
14
23
24
25
25
59
7
2
MOTOR
DRIVE
M
M702
(LOADING)
DISC TRAY
ADDRESS DETECT
LOD POS
CLP POS
CLP NEG
•
SIGNAL PATH
: CD PLAY (ANALOG)
: CD PLAY (DIGITAL)
: OPTICAL IN
MASTER CONTROLLER
(CD MECHANISM CONTROLLER)
IC300 (1/2)
When the optical pick-up
is inner position.
is inner position.
ON :
HMC-MD777
F
C
B
D
A
E
I
J
J
I
B
A
C
D
D
E
F
DETECTOR
1
2
J
I
4
5
6
7
A
B
C
D
D
8
9
E
F
LD
PD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP
(KMS-260B/J1N)
AUTOMATIC
POWER
CONTROL
Q162, 163
LASER ON
SWITCH
Q101
OVER WRITE
HEAD DRIVE
IC181, Q181, 182
HF MODULE
SWITCH
IC103, Q102 – 104
11
10
APC
PD
LD/PD
AMP
APCREF
I-V
AMP
I-V
AMP
AT
AMP
B.P.F.
29
30
WBL
ADFM
ADIN
32
ADFG
ABCD
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
35
34
26
28
ABCD
FE
TE
SE
V-I
CONVERTER
20
F0CNT
WBL
3T
EQ
SERIAL/
PARALLEL
CONVERTER,
DECODER
COMMAND
17
16
18
SWDT
SCLK
XLAT
RF AMP
B.P.F.
46
RFO
40
RF AGC
& EQ
AGCI
EQ
38
RF
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
TEMP
48 47
MORFO
MORFI
3T
PEAK &
BOTTOM
WBL
33
AUX
63
37
PEAK
36
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC152
6
8
OUT4F
OUT4R
M
M681
(SPINDLE)
27
25
OUT2F
OUT2R
M
M682
(SLED)
21
23
OUT1F
OUT1R
12
10
OUT3F
OUT3R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
3
4
IN4R
IN4F
29
30
IN2F
IN2R
19
18
IN1F
IN1R
14
15
IN3F
IN3R
MOD
SPFD
SPRD
92
91
88
89
86
85
APCREF
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
16
PSB
PWM GENERATOR
AUTOMATIC
POWER
CONTROL
DIGITAL
SERVO
SIGNAL
PROCESS
75
66
65
67
ANALOG MUX
A/D CONVERTER
AUTO
SEQUENCER
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC121 (2/2)
RECP
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
81
80
82
XLRF
CKRF
DTRF
XLAT
SCLK
SWDT
PLL
FILTER
60
59
62
61
FILI
PCO
CLTV
FILO
100
EFMO
25
ADDT
22
DATAI
IC121 (1/2)
15
TX
53
54
57
ASYO
ASYI
RFI
SCTX
HR901
OVER WRITE HEAD
ADIP
DEMODULATOR/
DECODER
78
ADFG
SPINDLE
SERVO
F0CNT
94 93
SPFD
SPRD
SUBCODE
PROCESSOR
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
WAVE
SHAPER
IC401 (1/5)
RESET SIGNAL
GENERATOR
IC451
DIN0
DOUT
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC121 (1/2)
DADT
INTERNAL BUS
CLOCK
GENERATOR
XBCK
LRCK
FS256
OSCI
X101
22.5792MHz
OSCO
CPU
INTERFACE
MONITOR
CONTROL
CONTROL
10
XRST
12
DQSY
11
SQSY
14
XINT
9 8
5 6 7
SENS
SRDT
SWDT
SCLK
XLAT
1
2
3
4
MNT0
MNT1
MNT2
MNT3
FOK
SHOCK
XBUSY
SLOCK
SWDT
SCLK
XLATCH
77
35 37 66
82 81 80 79
MNT0
MNT1
MNT2
MNT3
12
DIGRST
SQSY
DQSY
LDON
WRPWR
MOD
XINT
SENS
SRDT
05
49, 48, 50, 51
1, 2, 18, 19
DQ1 – DQ4
34 – 31, 36 – 40, 45
6 – 9, 11 – 15, 5
A0 – A9
D0 – D3
A00 – A09
43
16
47
3
46
4
44
17
XOE
XWE
XRAS
XCAS
XOE
XWE
XRAS
XCAS
D-RAM
IC124
DIN1
MD MECHANISM CONTROLLER
IC316 (1/3)
74
13
64
65
79
83
12
HF MODULE
16
17
ADDT
DADT, BCK,
LRCK, FS256
A
(Page 45)
OPT SEL
D
(Page 42)
CD DIGITAL/
OPTICAL IN
B
(Page 42)
C
(Page 45)
27 73 78 36
75
57
67
SCTX 72
OPTSEL1 47
•
SIGNAL PATH
: MD PLAY
: MD REC (ANALOG IN)
: MD REC (ANALOG IN)
: MD REC (CD DIGITAL)
: MD REC (OPTICAL IN)
: MD REC (OPTICAL IN)
COMPA-
RATOR
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC
ENCODER/DECODER
26
28
21
20
19
29
27
24
XBCKI
23
LRCKI
S.RST
MD BACK UP +3.3V
– 43 –
– 44 –
6-2.
BLOCK DIAGRAM – MD SERVO Section (1/2) –
HMC-MD777
– 45 –
– 46 –
6-3.
BLOCK DIAGRAM – MD SERVO Section (2/2) –
A/D, D/A CONVERTER
IC201
05
EEPROM
IC171
X302
10MHz
M572
(LOADING)
LOADING MOTOR DRIVE
IC550
MD MECHANISM CONTROLLER
IC316 (2/3)
Q570
SWITCHING
+5V
S681
(LIMIT)
S682
(REFLECT)
S683
(PROTECT)
S1 (DISC 1)
S2 (DISC 2)
S3 (DISC 3)
S4 (DISC 4)
S5 (DISC 5)
S6
(HEAD UP)
S7
(HEAD DOWN)
S572
(LOADING OUT)
S573
(LOADING IN)
S570
(HOME)
S571
(RESET)
LIMIT-IN
REFLECT
L3DA
TA
L3CLK
L3MODE
J1
MD WALKMAN
LINK
DATA
6
J901 (2/2)
VINL1
VINL2
DATAO
DATAI
BCK
BCK
WS
SYSCLK
SDA
SCL
SDA
SCL
LDIN
LDOUT
XOUT
XIN
L3DA
TA
L3CLK
L3MODE
88 87
5
6
13
15
54 55
39
63
58
PROTECT 59
HEADSW-UP 92
HEADSW-DOWN 91
PACK-OUT 53
CHACK-IN 51
HOME 52
RESET SW
SENSOR
83
SENSOR SW
28
DISC1
DISC2
85
86
DISC3 90
DISC4 89
DISC5 84
22 21 69
WMOUT
1
WMINV
45
WMSYNC
19
WMCLK
2
WMIN
100
2
6
VINR1
VINR2
4
8
15 14 13
18
19
16
16
17
12
ADDT
A
C
(Page 44)
DADT, BCK,
LRCK, FS256
LRCK, FS256
DADT
BCK
LRCK
FS256
(Page 44)
DIGITAL
INTERFACE
DECIMATION
FILTER
INTERPOLATION
FILTER
PEAK
DETECTOR
L3-BUS INTERFACE
BUFFER
Q403
SWITCH
Q401
TSB DETECT
IC401
TSB DETECT
IC402
COMPARATOR
IC570 (1/2)
ELEVATOR POSITION
SENSOR
PH570
SWITCH
Q400
BUFFER
Q404
WAVE SHAPER
IC401 (2/5)
CLK DETECT
IC2000
NOISE
SHAPER
D/A
CONVERTER
CIRCUIT
DIGITAL MIXER,
DIGITAL AGC
VOUTL
VOUTR
26
24
A/D
CONVERTER
CIRCUIT
L
MD ANALOG IN
MD ANALOG OUT
R
L
R
+5V
40
SENSOR2
COMPARATOR
IC570 (2/2)
ELEVATOR POSITION
SENSOR
PH571
M571
(ELEVATOR UP/DOWN)
ELEVATOR UP/DOWN
MOTOR DRIVE
IC551
ELEUP
ELEDOWN
24 26
OVER WRITE HEAD
UP/DOWN MOTOR DRIVE
IC172
AIN
BIN
AOUT
BOUT
HEADDOWN
HEADUP
4
5
41 42
1
7
MOTOR
DRIVE
M
AIN
BIN
AOUT
BOUT
4
5
1
7
MOTOR
DRIVE
M
AIN
BIN
AOUT
BOUT
4
5
1
7
MOTOR
DRIVE
M
M4
OVER WRITE HEAD
UP/DOWN
•
SIGNAL PATH
: MD PLAY
: MD REC (ANALOG IN)
: MD REC (ANALOG IN)
HMC-MD777
– 47 –
– 48 –
MASTER CONTROLLER
(CD MECHANISM CONTROLLER)
IC300 (2/2)
FL DRIVER
IC601
LED DRIVER
IC661
D661 – 665
FLUORESCENT
INDICATOR TUBE
FL601
05
+3.3V
(MD SERVO SECTION B+)
D212
D211
AUDIO AMP
(IC901) B+
B+
B–
STB
DRVDAT
DRVCLK
DRVCS
DRVRST
LEDLAT
1G
D305
D303
D304
RESET
SX
SY
I2CDATA
I2CCLK
LX
LY
X1
X2
A
B
S-RAM
IC302
X300
12.5MHz
Q300
IIC BUS
EXTENDER
IC204
Q803
7
8
9
KEY0
S604, 613,
S661 – 665
S611, 612,
S671 – 676
CD
SYSTEM
KEYS
S602, 603,
S606 – 610, 636
XOUT
XIN
CLR
CLK
D
ATA
I2CCLK
I2CDA
TA
D0 – D7
D0 – D7
A0 – A14
A0 – A14
P1 – P35
12
13
13
4
7
SDATA
SCK
CS
RESET
16
15
15
14
13
DATA
CLK
STB
CLR
15
16
17
18
18
3
12
20
21
39
38
OE
RE
22
20
5
WE
CE1
WE
I2CHELP (BUSD3)
I2CHELP (BUSCLK)
I2CCLK
I2CDA
TA
I2CBUSY
27
3
6
2
7
6
36 44 75 73
43
AC CUT 48
20 29 30
53
KEY1
54
KEY2
55
JOG0
49
JOG1
50
ROTARY
ENCODER
S681
BUFFER
Q507
RESET SWITCH
Q301
OSC
OSC
GRID
DRIVE
Q601
VOLTAGE DETECT
IC301
BUFFER
Q508
BUFFER
Q506
S681
≠ Cc ±
MD MECHANISM
CONTROLLER
IC316 (3/3)
C816, R802
3
1
5
4
2
6
C606, R635
A
B
KEY1
S603, 604,
S606 – 609
S803 – 806
S807 – 812
95
KEY0
S602, 610 – 613,
S802
97
KEY2
94
KEY3
93
JOG0
43
JOG1
44
ROTARY
ENCODER
S801
S801
≠ Cc ±
CN201 (1/2)
(TO STR-MD777)
SYSTEM CONTROL
84 – 91
76 – 83, 92 – 98
59 – 33, 31 – 24
2G – 15G
11 – 1, 64 – 62
11 – 13, 15 – 19
10 – 3, 25, 24,
21, 23, 2, 26, 1
P1 – P10
19, 20, 22 – 27, 1, 2
I2CHELP
VF (1)
AC ANALOG (1)
11
12
14
CN201 (2/2)
(TO STR-MD777)
SYSTEM CONTROL
VF (2)
10
CS/BS SEL
6
AC ANALOG (2)
D309
FL DRIVER
IC801
LED DRIVER
IC802
D801 – 808
FLUORESCENT
INDICATOR TUBE
FL801
FLDATA
FLCLK
FLCS
LEDLAT
D15
OSCO
OSCI
S1 – S35
31
33
34
LEDDATA
LEDCLK
5
7
46
SDATA
SCK
CS
RST
63
62
61
60
CLR
18
11
P.DOWN
18
DATA
P18
CLK
STB
DATA
CLK
STB
15
16
17
54
58
59
GRID
DRIVE
Q801
RECET
D218 – 221
RIPPLE
FILTER
Q206
RIPPLE
FILTER
Q207
RECET
D205, 206
+5.7V
REGULATOR
IC205
+5V
REGULATOR
IC202
+3.3V
REGULATOR
IC191
+5V
REGULATOR
IC203
+8.2V
REGULATOR
Q203, 204, 208
NEGATIVE VOLTAGE
REGULATOR
Q205, 209
+5V
REGULATOR
Q210, 211
RIPPLE
FILTER
Q341
RECT
D214, 215
SWITCH
Q403
SWITCH
Q401
SWITCH
Q402
RESET SWITCH
Q802, 804
5 – 39
D1 – D14
40 – 53
P1 – P5, P9 – P13, P17
19, 20, 22 – 24, 1 – 5, 10
IC401 (3/5)
IC401 (4/5)
IC401 (5/5)
MD
SYSTEM
KEYS
TO
FL601, 801
CS/BS SEL
(Page 42)
D222, 223
BT201
LITHIUM
BATTERY
D208
+5V
(LED DRIVER (IC802) B+)
+5V
(DIGITAL INPUT CIRCUIT B+)
+5V
(I2C BUS INTERFACE CIRCUIT B+)
CD BACK UP B+
MD SYS +3.3V
(FL DRIVER (IC801) B+)
+5.7V
REGULATOR
IC201
B+ SWITCH
Q202
B+ SWITCH
Q201
D227
D224
D225, 308
D302
M+5.7V (MD)
MD MECHANISM
MOTOR SYSTEM B+
+5V
MD MOTOR/COIL DRIVER (IC152),
OVER WRITE HEAD DRIVE CIRCUIT B+
BD (A) +5V
CD SERVO SECTION
(ANALOG SYSTEM) B+
BD (D) +5V
CD SERVO SECTION
(DIGITAL SYSTEM) B+
M+7V (CD)
CD MOTOR/COIL DRIVER (IC102),
CD MECHANISM MOTOR SYSTEM B+
D+5V (PULL-UP)
MASTER CONTROLLER (IC300),
FL DRIVER (IC601), LED DRIVER (IC661) B+
D301
D913
D207
D+5V (VDD)
MASTER CONTROLLER (IC300),
S-RAM (IC302) B+
MD BACK UP +3.3V
MD MECHANISM CONTROLLER
(IC316) B+
VG
(FL DRIVER (IC601, 801) B–)
E
6-4.
BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
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