Sony SCD-XB770 Service Manual ▷ View online
SCD-XB770
29
29
5-4.
BLOCK DIAGRAM – AUDIO Section –
32 DSI1
34 DSI2
40 DSI5
42 DSI6
36 DSI3
38 DSI4
30 FS64
28 FS128
56
DSAL
58
DSAR
69
PHREFO
92
CDDATAL
90
LRCKO
DSD DIGITAL SIGNAL PROCESSOR
IC803
DSL
DSR
DSLS
DSRS
DSC
DSLF
E64FSO
E128FSO
25
(Page 28)
DSL, DSR,
DSLS, DSRS,
DSC, DSLF,
E64FSO, E128FSO
DSLS, DSRS,
DSC, DSLF,
E64FSO, E128FSO
7
XMSLAT
93 CDDATASL
79 XABSL2
CDMODE
HDMODESEL
XZLAT
82 XABSL1
28
(Page 28)
XZLAT,
CDMODE,
HDMODESEL
CDMODE,
HDMODESEL
MSDATO
29
(Page 28)
SHRRDY,
MSCK, MSDATI,
MSDATO, XRST DSD
MSCK, MSDATI,
MSDATO, XRST DSD
MSDATI
MSCK
XRST DSD
SHRRDY
4
MSDATO
99 XRST
5
MSDATI
6
MSCK
3
MSREADY
94 BCKI
88 MCKI
95 LRCKI
96 CDDATAI
85 DVCKI
BCLK
ZMCKI
LRCK
MDAT
17
(Page 27)
MDAT,
LRCK,
BCLK
LRCK,
BCLK
24
(Page 28)
ZMCKI,
256FS
256FS
256FS
• SIGNAL PATH
: SACD PLAY
: CD PLAY (ANALOG OUT)
• R-ch is omitted due to same as L-ch.
8
9
13
12
5
6
3
4
1
2
CLOCK BUFFER
IC304
X301
11.2896MHz
60
DSALS
62
DSARS
1
DSDL
2
DSDR
20
DBCK
4
PDATA
5
PLRCK
3
PBCK
DSD
INTERFACE
PCM
INTERFACE
DSD
FILTER
PCM
FILTER
18
PSCK
19
DSCK
MUX
MULTI LEVEL
DELTA SIGMA
MODULATOR
MULTI LEVEL
D/A
CONVERTER
MODE
CONTROL
15
MD
16
MC
17
MS
9
VOUTL
10
VOUTR
DATA
SHIFT
LATCH
DIGITAL FILTER,
D/A CONVERTER
IC302
1
DSDL
2
DSDR
20
DBCK
4
PDATA
5
PLRCK
3
PBCK
DSD
INTERFACE
PCM
INTERFACE
DSD
FILTER
PCM
FILTER
18
PSCK
19
DSCK
MUX
MULTI LEVEL
DELTA SIGMA
MODULATOR
ANALOG
LOW-PASS
FILTER
MULTI LEVEL
D/A
CONVERTER
MODE
CONTROL
15
MD
16
MC
17
MS
9
VOUTL
10
VOUTR
DATA
SHIFT
LATCH
DIGITAL FILTER,
D/A CONVERTER
IC303
1
DSDL
2
DSDR
20
DBCK
4
PDATA
5
PLRCK
3
PBCK
DSD
INTERFACE
PCM
INTERFACE
DSD
FILTER
PCM
FILTER
18
PSCK
19
DSCK
MUX
MULTI LEVEL
DELTA SIGMA
MODULATOR
MULTI LEVEL
D/A
CONVERTER
MODE
CONTROL
15
MD
16
MC
17
MS
9
VOUTL
10
VOUTR
DATA
SHIFT
LATCH
DIGITAL FILTER,
D/A CONVERTER
IC301
26
(Page 28)
DATA, SHIFT, LATCH, AMUTZ
27
(Page 28)
MUTE
AMUTZ
64
DSAC
66
DSASW
R-CH
R-CH
MUTING
Q401
MUTING
Q402
MUTING
Q403
R-CH
R-CH
R-CH
MUTING
Q421
MUTING
Q422
MUTING
Q441
MUTING
Q442
MUTING
Q541
MUTING
Q542
ANALOG
LOW-PASS
FILTER
IC307
D305
D304
MUTING
CONTROL
SWITCH
Q301
MUTING
CONTROL
SWITCH
Q303
R-CH
PHONES LEVEL
RV601
PHONES
J601
HEADPHONE
AMP
IC308
L
R
ANALOG
2CH OUT
J301
L
R
J302
FRONT
SUB WOOFER
CENTER
L
R
ANALOG
5.1CH OUT
R-CH
R-CH
R-CH
SURR
ANALOG
LOW-PASS
FILTER
IC305
ANALOG
LOW-PASS
FILTER
IC306
ANALOG
LOW-PASS
FILTER
ANALOG
LOW-PASS
FILTER
Ver 1.1 2001.07
SCD-XB770
30
30
5-5.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
S807 – 809
S808
X
AMS
L
l
S807
H
S809
x
MENU
S803
S801 – 805
S801
J
S802
J
SACD/CD
S804
MULTI/2CH
S805
TIME TEXT
S812
S806
A
OPEN/CLOSE
PUSH ENTER
S830
ROTARY
ENCODER
REMOTE
CONTROL
RECEIVER
IC802
60
KEY0
61
KEY1
62
KEY2
63
KEY3
82
RM
59
LED DRV
53
SDOUT
54
SLK
56
REQ
55 FL. DATA (DI)
54 FL. CLK (CL)
53 FLT (CE)
OSC
C804,
R801
50 OSC0
51 OSC1
52
FLRST
30
(Page 28)
XRST DP
31
S35
61 – 64, 1 – 30
45 – 32
46, 47
3G – 16G
1G, 2G
S1 – S34
CPU
IC901 (3/3)
FLUORESCENT INDICATOR TUBE DRIVER
IC801
SEGMENT
DRIVE
Q803
D803
(MULTI-CHANNEL)
LED
DRIVE
Q701, 702
GRID
DRIVE
Q801, 802
FL801
FLUORESCENT
INDICATOR
TUBE
F1
F2
RECT
D905, 906
MUTE +3.3V
D+3.3V
(IC811)
(IC811)
+3V
(IC304)
DAC+5V
(IC301 – 303)
+3.3V
REGULATOR
IC310
+5V
REGULATOR
IC903
A+7V
(IC305 – 307)
+7V
REGULATOR
IC901
A+UR
(IC308)
RECT
D901, 902
A–7V
(IC305 – 307)
–7V
REGULATOR
IC902
RECT
D903, 904
A–UR
(IC308)
VFL–33V
FLUORESCENT INDICATOR
TUBE DRIVER
(IC801)
–33V
REGULATOR
Q921
RECT
D917 – 920
T901
POWER
TRANSFORMER
R954
D302
D301
T902
POWER
TRANSFORMER
F1
F2
D922
D+3.3V
(IC701, 901, 905)
+3.3V
REGULATOR
IC904
RECT
D909 – 912
A+3.3V
(IC701)
+2.5V
REGULATOR
IC702
+2.5V
(IC801)
+5V
REGULATOR
IC906
D+5V
(IC701)
A+5V
(IC703, 708)
M+12V
(MOTOR DRIVE (IC512))
+12V
REGULATOR
IC905
RECT
D913 – 916
+5V
REGULATOR
IC504
+5V
(COIL/MOTOR DRIVE (IC502))
S991
POWER
LINE
FILTER
L901
AC IN
D308
Ver 1.1 2001.07
SCD-XB770
31
31
5-6.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• Main board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
included in diagram.
• Indication of transistor
C
B
These are omitted.
E
Q
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : SACD PLAY
(
no mark : SACD PLAY
(
) : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: SACD PLAY
c
: CD PLAY (ANALOG OUT)
I
: CD PLAY (DIGITAL OUT)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Circuit Boards Location
TRANS board
POWER board
RF board
AUDIO board
MAIN board
DISPLAY board
LOADING board
HP board
AC SW board
KEY board
SCD-XB770
32
32
5-7.
SCHEMATIC DIAGRAM – RF Board –
•
See page 48 for Waveforms.
•
See page 51 for IC Block Diagram.
R017
CN003
R001
R002
C004
C006
CN002
R097
C090
C002
R016
C027
C025
C016
C008
C009
C010
C011
C013
C017
C021
JL081
R022
C036
R025
R024
R023
R035
C051
R021
C044
C028
C055
C052
R029
R046
R036
R044
R087
R086
C094
C064
R065
R085
R066
JL051
JL053
JL052
C050
C095
JL006
JL003
JL002
JL001
Q001
IC001
C030
C042
C043
C046
C047
C048
C041
C040
C039
C032
C026
C018
C020
Q002
C007
C024
R091
R098
C022
C015
D001
R092
R018
Q005
R003
C029
C038
R094
R019
D002
R020
R090
Q003
C003
C060
IC004
S1
M3
M2
C031
C037
C045
R084
C023
R015
R093
C001
R082
R083
CN005
C012
470
25P
0
100
0.1
0.1
6P
33k
1
2200p
1k
0.1
0.1
180p
2200p
2200p
2200p
2200p
5600p
22p
22p
12k
0.1
0
0
0
0
0.1
10M
330p
47
6.3
47
6.3
0.1
47k
100
10k
8.2k
10k
10k
22
10V
0.1
10k
10k
10k
22
10V
0.1
2SB1121-ST-TD
CXD1881R
22
10V
0.033
0.033
0.1
0.1
0.047
0.01
0.01
0.1
0.1
0.01
22p
22p
2SB1121-ST-TD
10
0.01
0
33k
1000p
10
1SS352
-TPH3
0
1k
DTC144EKA-
T146
33k
10
100
6.3V
33
33
1SS352
-TPH3
470
0
2SB1121-ST-TD
0.1
0.1
NJM3403AV(TE2)
0.1
1000p
1000p
10k
100
6.3V
33
33
2200p
10k
10k
30P
5600p
DVD_PD
CD_PD
RFP
DVD_PD
CD_PD
CD_LD
SP+
SP-
LIM_SW
SD-
SD+
SP-
SP+
LIM_SW
SD+
SD-
TD-
TD+
A
B
C
D
VMOD
DVD_LD
FD-
FD+
FD-
FD+
TD-
TD+
C
D
_
F
CD
_
E
L
D
O
N
M
IR
R
D3V
D3V
SD
E
N
D
A
T
A
_
R
F
C
LK
_
R
F
FE
/P
I
F
E
E
G
H
F
V
M
O
D
PI
MIRR
VMOD
FE/PI
TE
PI
SDEN
DATA_RF
CLK_RF
LDON
FE
T
E
D
V
D
_
L
D
V
M
O
D
C
D
_
L
D
B
RFP
C
D
A
E
H
F
G
CD_F
CD_E
VMOD
DVD_LD
DVD_VR
DVD_PD
TRK+
TRK-
FCS-
FCS+
CD_VR
DVD_LDGND
MIRR
PI
TE
FE
SDEN
RFAC
D3V
D3V
CLK_RF
DATA_RF
A5V
A5V
AGND
AGND
LIM_SW
A3V
LIM_SW
SP+
SP-
SP+
SP-
LDON
TD-
TD+
FD-
FD+
SD-
SD+
SD+
SD-
CD_LD
CD_LDGND
CD_PD
A
D
E
C
GND
H
VC
RF
F
G
VCC
B
AVC
AVC
VMOD
DFCT
FE/PI
SACD/CD RF AMP,
FOCUS/TRACKING
ERROR AMP
B+ SWITCH
AUTOMATIC
POWER CONTROL
(FOR SACD)
B+ SWITCH
AUTOMATIC
POWER CONTROL
(FOR CD)
PI ERROR AMP,
SA/CD
(LIMIT)
(SLED)
(SPINDLE)
SUMMING AMP,
AVC BUFFER
(Page 36)
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