Sony SCD-XB940 (serv.man2) Service Manual ▷ View online
9
9
SCD-XB940
2.
DIAGRAMS
2-1.
BLOCK DIAGRAM – RF/SERVO Section –
1
5
6
7
8
13
14
15
16
12
11
10
9
20
19
17
23
14
13
2
3
5
9
6
7
16
15
23
26
20
INVERTER
Q601
LASER
DIODE
46
45
44
43
44
69
22
43
42
41
68
48
39
40
29
67
28
DETECTOR
OPTICAL PICK-UP
BLOCK
(KHM-220AAA/JIN)
AUTOMATIC
POWER
CONTROL
Q001
32
85
48
66
97
26
39
3
2
1
23 65 7 9 8
50
27
DEFECT
SWITCH
Q002
(FOCUS)
(TRACKING)
2-AXIS
DEVICE
VC
(2.5V)
FOCUS
COIL
DRIVE
TE GAIN
CONTROL AMP
IC610 (1/2)
TILT
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
SPINDLE
ERROR AMP
IC613 (1/2)
LOADING
MOTOR
DRIVE
15 – 18
STANDBY
STANDBY
STANDBY
STANDBY
TRACKING
COIL
DRIVE
M
M
4, 5
117 – 120, 122 – 125
60 – 64
74, 81, 84, 93, 96
12
11
FCS+
FCS–
TRK+
TRK–
INLIMIT
SENSOR
2
5
20
9
23
17
18
6
M
SLED
MOTOR
DRIVE
11, 12
13, 14
M
SPM+
SPM–
SPM–
LDM+
LDM–
7
5
10
3
8
1
46
49
92
80
RF
A
B
C
D
E
F
G
H
RFIP
A2
B2
C2
D2
E
F
G
H
A
B
C
D
47
54
58
59
64
63
61
62
50
49
51
52
20
21
26
42
28
31
38
SDEN
SRD
SWD
SCLK
HOLD1
TE
FE
PI
MIN
TZC
SIGDET
SIGO
MIRR
HOLD2
DFT
25
LDON
LD
PD
VC
VC1
LD
PD
2VC
(SPINDLE)
(TILT)
(SLED)
M1
(LOADING)
CENTER VOLTAGE
GENERATOR
IC613 (2/2)
2.5VC
2VC
1.6V
DVD RF, CDRF
+5V
+3.3V
+3.3V
CENTER VOLTAGE
GENERATOR
IC610 (2/2)
5
7
+3.3V
2VC
4
3
2
1
GIO5
ADC0
GIO6
GIO7
GIO8
ADC1
ADC2
DAB2
GIO2
ADC3
DAB0
GIO4
GIO1
DAB1
DAB3
TRREF
TRIN
DFCT1
GIO11
DIGITAL SERVO
SIGNAL PROCESSOR
IC607
FDCHG
FCD+
TLTB
TE GAIN
TRD+
TLTA
TRD–
FCD–
SSDFCT
INLIM
SP ERROR
LOCK
MCK1
LOCK, MCK1
MCK
X601
27MHZ
FGAEF
X1
RS
GIO10
HINT
HCS
HMR
EA0, 1
HD0 – 7
ADC5 – 9
X2
VRBA, VRBI – 3,
VRTO
HRD
TIA+, –
TIB+, –
FCD+
FCD–
TRD+
TRD–
TILTA
TILTB
SLB–, +
SLA–, +
HD8 – 15
5
6
7
8
9
11
12
14
HA0, 1
HD0 – 15
HD0 – 19
XSDPRD
XSDPWR
XSDPCS
XSDPINT
XSDPCS
XSDPINT
GAIN CONTROL
Q601, 602
S1
(OPEN/CLOSE)
OCSW1
OCSW2
13
10
15
XSDPRD, XSDPWR,
XSDPCS, XSDPINT
FCSON
XSDPRST
RSTX
SPGAIN
LDMM/DMM, LDMP/DMP
XDRV MUTE
SDPLSTOP
OCSW1, OCSW2
D604
D600
D606 (2/2)
D610
MDSO
MDPO
D609
FGIN
ADC4
PWM2
PWM0
PWM1
STVC
SLDA
SLDB
GIO0
D606
(1/2)
D608
LDMM/DMM
LDMP/DMP
26
3
STVC
STVC
SLDB
SLDA
D607
D605
108
109
128
FOCUS/TRACKING COIL DRIVE,
TILT MOTOR DRIVE
IC614
SPINDLE/SLED/LOADING
MOTOR DRIVE
IC615
ATOP
ATON
AIP
AIN
SSOUT
FNP
FNN
CLM
DIP
DIN
(Page 10)
(Page 11)
(Page 11)
(Page 10)
(Page 11)
(Page 11)
(Page 11)
(Page 11)
(Page 11)
(Page 10)
(Page 11)
(Page 11)
(Page 11)
(Page 11)
(Page 11)
DATA BUS
ADDRESS BUS
SACD/CD RF AMP,
FOBUS/TRACKING ERROR AMP
IC001
•
SIGNAL PATH
: SACD
: CD
05
10
10
SCD-XB940
19
13
27
14
27
14
28
29
58
29
5
121
49
52
113
111
55
56
59
60
61
86
87
83
123
84
MA0
–
9
16
–
19, 22
–
26
97, 98, 100
–
105
63
–
68, 70, 71
73
–
76, 79
–
82
COAXIAL
OPTICAL
OPTICAL
TRANCEIVER
IC352
IC352
BUFFER
Q351
DIGITAL OUT
CD
J351
107
108
109
148
152
151
152
151
150
91
93
95
93
95
94
96
18
5
2
2
100
1
11
9
91
–
98
SD0
–
7
9
–
16
82
–
89
WAD0
–
7
1
(Page 9)
24
(Page 11)
2
(Page 9)
11
(Page 9)
23
(Page 11)
22
(Page 11)
21
(Page 11)
20
(Page 11)
19
(Page 11)
SWITCHING
IC616 (1/2)
SWITCHING
IC616 (2/2)
SWITCHING
IC627
SWITCHING
IC629
SWITCHING
IC630
80
81
22
17
(Page 11)
16
(Page 11)
05
18
(Page 11)
6
13
WCK
WRFD
TRST
XRST
7
8
9 10 11
XMSLAT
MSCK
MSDI
MSDO
MSREDY
14
Q
D
CK
Q
Q
Q
D
CK
INVERTER
IC624
28
27
256FSO IN
LT64FSO
SDATAL, SDATAR
CDDATA,
12
11
8
2
6
5
3
9
46
42
TIMING
IC621
69
68
67
66
XOE
BCKD
BCKA
XRAS
XCAS
XWE
22
7
23
6
48
2
–
5, 24
–
27
51, 52, 55
–
63
9
–
13, 16
–
21
70
–
77
47
SDATAR
SDATAL
DSAR
DSAL
26
25
CDBCK, CDLRCK
(Page 12)
(Page 12)
(Page 12)
(Page 12)
17
110
DVD RF
CD RF
DVD RF, CD RF
D-RAM
IC628
DQ1
–
16
A0
–
8
WE
OE
RAS
UCAS
LCAS
HD0
–
15
HD0 – 15
MA0 – 8
RFIN2
LOCK
MCK1
MDSO
MDPO
MD2
MUTE
DFCT
NORF
FWON
XMR
XRD
XWAT
XRST
XINT
XCS
D0
–
7
A0
–
7
XMWR
XDE
XRAS
XDE
XRAS
XCAS
RFIN1
RF IN
LOCK
LOCK, MCK1
MDSO, MDPO
HD0 – 15
HD0 – 19
MD2, MUTE,
DFCT, NORF
FWON, XARPWR,
XARPRD, XARPCS
XARPWT, XARPRST, XARPINT
AVDRST
XCE
SHRMUT, SHRLT, SCK1, SOUT1, SIN1, SHRRDY
LOCK
MCK1
MDSO
MDSP
RF SIGNAL
DECODER
IC622
HD8 – 15
HA0 – 7
MD2
MUTE
DFCT
NORF
FWON
XARPWR
XARPRD
XARPWT
XARPRST
XARPINT
XARPCS
SCKI
SD0
–
7
SDCK
XSHD
XSAK
XSRQ
SDEF
RFD
PLCKO
DOUT
DATA
BCLK
LRCK
CDDATA
CD BCK
CD LRCK
DSD DECODER
IC617
99 SDEF
XSRQ
XSAK
XSHD
SDCK
ADIN
XCE
CLK
D0
–
7
A/D CONVERTER
IC620
A0
–
10
DQ0
–
7
D-RAM
IC625
OE
RAS
CAS
WE
DQ0
–
7
A0
–
10
SHRMUT
SHRLT
SOUT1
SIN1
SIN1
SHRRDY
SCK1
MCKI
SMUTE
XCE
DATA BUS
ADDRESS BUS
2
–
5, 7
–
10,
31
–
34, 36
–
39
154
–
157, 159
–
162,
164
–
167, 169
–
172
136
–
139, 141
–
144,
146, 147
COUNTER
IC309
CLOCK
IC623
•
SIGNAL PATH
: SACD
: CD
: DIGITAL OUT
2-2.
BLOCK DIAGRAM – MAIN Section (1/2) –
11
11
SCD-XB940
2-3.
BLOCK DIAGRAM – MAIN Section (2/2) –
59
117
116
118
115
99
98
103
102
104
109
110
111
108
71
22
23
3
106
107
54
114
57
93
91
92
64
94
105
63
24
8
25
1
6
33
74
57
42
53
54
5
35
4
36
3
16
157
79
156
26
155
28
145
82
144
83
143
84
112
41
6
12
10
65
113
17
125
39
124
40
142
69
135
71
141
66
146 – 148, 149 – 154
13 – 20, 22 – 29
1 – 9, 32 – 40
D0 – 15
A0 – 17
85 – 100
1 – 3, 102 – 109, 111 – 118, 120
D16 – 31
A00 – 19
7 – 10, 13 – 16,
29 – 32, 35 – 38
1 – 5, 18 – 21,
24 – 27, 42 – 44
I/O0 – 15
A0 – 15
126 – 133
HD0 – 7
HA17 – 19, HA0 – 5
63
58
60
39
38
37
62
21
22
20
19
18
17
6
7
40
41
17
22
23
16
32
33
3
6
7
8
10
13
14
15
12
24
21
20
19
18
31
30
9
29
DATA BUS
4
ADDRESS BUS
DATA BUS
ADDRESS BUS
5
(Page 9)
(Page 10)
(Page 10)
(Page 10)
(Page 10)
(Page 12)
(Page 12)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 9)
(Page 10)
(Page 10)
(Page 10)
(Page 10)
(Page 10)
(Page 13)
(Page 13)
(Page 9)
(Page 13)
05
IFSI0, IFSO0, IFSCO, XVIFCS
RSTX
XFRRST
IFBSY
AVDRST
AVDRST
XARPINT
XARPRST
XARPWT
XARPCS
XARPRD
XARPWR
FWON
NORF
DFCT
MUTE
MD2
OCSW2
OCSW1
LDMP/DMP
LDMM/DMM
XSDPINT
XSDPCS
XSDPWR
XSDPRD
XARPWT, XARPRST,
XARPINT
XARPINT
FWON, XARPWR,
XARPRD, XARPCS
XARPRD, XARPCS
MD2, MUTE,
DFCT, NORF
DFCT, NORF
LOCK
SPGAIN
OCSW1, OCSW2
XDRV MUTE
SPDLSTOP
XSDPRST
FCSON
XSDPRD, XSDPWR,
XSDPCS, XSDPINT
XSDPCS, XSDPINT
MCK
LDMM/DMM,
LDMP/DMP
LDMP/DMP
HD0 – 15
HD8 – 15
HD0 – 15
HD0 – 16
HD0 – 15
HA1 – 16
HA1 – 18
HA0 – 19
HA0 – 5,
HA17 – 19
HA0 – 19
MCK
SDSPRD
SDSPWR
SDPCS
SDPIT
MD2
MUTE
DFCT
NORF
FWON
ARPWR
ARPRD
ARPCS
ARPWT
AVDRST
XIFINT
ARPRST
ARPINT
FCSON
SDPRST
SPDLSTOP
XDRVMUTE
LDMM/DMM
LDMP/DMP
OCSW1
SPGAIN
LOCK
OCSW2
XECS
XEWC
XEBSY
DO
DI
SK
CS
WC
R/B
RST
WAIT
HINT1
HINT3
HRD
HWRH
HWRL
XRAMDE
XRAMWE
RAMLB
RAMUB
CS4
CPUCK
CS1
EXPANDER
IC612
S-RAM
IC609
ROM
IC632
OE
CS
WE
LB
UB
XOE
XCE
HD0 – 15
HA0 – 19
OU0
RSTX
CSOL
SO0
SC0
TRG0
RDY
INT1
INT3
RXD
WR0X
WR1X
CS0X
CS4X
CLK
CS1X
SC2
WD1X
CS0H
RAS1
SC1
SO1
SI1
CS1H
OCPA1
OCPA2
OCPA0
CS7X
CS6X
TRG1
XCE
SHRMUT
SHRLT
SCK1
SOUT1
SIN1
SHRRDY
INIT
LATCH
SHIFT
DATA
MODE
A22
A23
SI2
SO2
SC2
CTS
XDIAGON
SI2
SO2
JIGCLK
CTS
DIAGN
RXD
TXD
SYSTEM
CONTROLLER
IC605
X1
X0
X600
12.5MHz
XCE, SHRMUT, SHRLT
SHRMUT, SHRLT, SCK1,
SOUT1, SIN1, SHRRDY
SOUT1, SIN1, SHRRDY
INIT, LATCH, SHIFT,
DATA, MODE
DATA, MODE
AMUTEZ
CN600
(FOR CHECK)
EEPROM
IC600
SWITCHING
IC606 (1/3)
SWITCHING
IC606 (2/3)
SWITCHING
IC606 (3/3)
IFSI0
IFSO0
IFSCO
XVIFCS
12
12
SCD-XB940
2-4.
BLOCK DIAGRAM – AUDIO Section –
2
1
2
28
27
27
1
3
6
5
1
3
2
1
7
7
6
1
3
2
28
27
27
25
24
5
4
2
1
SWITCHING
CIRCUIT
SWITCHING
CIRCUIT
CONTROL
CIRCUIT
PHONE LEVEL
CONSTANT
CURRENT
CIRCUIT
CONTROL
CIRCUIT
CONSTANT
CURRENT
CIRCUIT
48
49
50
49
50
53
52
6
7
1
2
3
5
6
7
1
10
5
7
15
18
4
5
24
25
8
51
30
28
31
32
33
34
17
19
22
24
15
18
10
X321
45MHZ
12
13
XOUT
XIN
44
MUTING
CONTROL
Q303
RV601-1
PHONES
J601
ANALOG OUT
J301
PHONE LEVEL
RV601-2
RELAY
DRIVE
Q301, Q302
5
CD DATA,
CD BCK,
CD LRCK
CD BCK,
CD LRCK
SDATA L, SDATA R
LT64FSO
DIGITAL FILTER,
D/A CONVERTER
IC301
CD DATA
CD BCK
CD LRCK
SDATA L
SDATA R
256FSO IN
INIT
LATCH
SHIFT
DATA
DATA
MODE
(Page 10)
INIT, LATCH,
SHIFT, DATA, MODE
SHIFT, DATA, MODE
IN2–
IN2+
IN2+
IN1+
IN1–
IN1–
VEE1
VCC1
I01+
I02–
I02–
I01–
I02+
I02+
+7V
–7V
CIREF
+5V
CURRENT PULSE
IC401
CURRENT PULSE
IC501
I-V
CONVERSION
IC402
AUDIO FILTER
IC403 (1/2)
AUDIO FILTER
IC403 (2/2)
RY301
HEADPHONE
AMP
IC331 (1/2)
+7V
–7V
+5V
IN2–
IO1+
IO2–
IO2–
IO1–
IO2+
IN2+
IN1+
IN1–
VCC1
VEE1
I-V
CONVERSION
IC502
AUDIO FILTER
IC503 (1/2)
AUDIO FILTER
IC503 (2/2)
HEAD PHONE
AMP
IC331 (2/2)
R
L
DATAI
BCKI
LRCKI
BCKI
LRCKI
SDATA L
SDATA R
SBCKI
INIT
NREGCLR
LATCH
SHIFT
SCDATA
MODE
LVCK02
L1 (–)
L1 (+)
L2 (+)
L2 (–)
R2 (–)
R2 (+)
R1 (+)
R1 (–)
AMUTEZ
25
(Page 10)
26
(Page 10)
(Page 10)
27
28
(Page 11)
32
(Page 11)
33
CIREF
•
SIGNAL PATH
: SACD
: CD
05
MUTING
Q403
MUTING
Q503
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