Sony SCD-XB790 Service Manual ▷ View online
SCD-XB790
29
29
IC808
IC706
IC813
IC812
IC811
IC702
IC903
IC904
IC504
IC502
IC512
IC905
IC708
1-684-066-
11
MAIN BOARD
(CONDUCTOR SIDE)
1
25
26
50
1
11
12
22
33
23
44
34
1
14
28
15
14
25
10
1
20
13
5
2
3
1
1
3
2
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
F
G
H
I
J
E
E
5-10. PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
•
See page 25 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D903
A-4
D904
A-3
IC502
F-9
IC504
G-9
IC512
H-10
IC702
E-3
IC706
B-5
IC708
B-6
IC808
C-3
IC811
E-5
IC812
E-4
IC813
D-4
IC903
G-4
IC904
G-6
IC905
H-9
Q701
J-6
Q702
J-7
SCD-XB790
30
30
5-11. SCHEMATIC DIAGRAM – MAIN (1/5)/LOADING Boards –
•
See page 42 for Waveforms.
•
See page 45 for IC Block Diagram.
R577
R578
R1026
R561
C501
JL609
JL610
JL611
CL506
CL507
CL508
JL612
JL613
JL614
JL615
JL616
FL502
CL503
CL505
CL504
CL1098
CL502
JL602
JL598
JL600
JL595
JL596
JL591
JL593
JL587
JL578
JL576
JL574
JL571
JL569
FL501
C561
C556
C547
C560
R617
R618
JL594
JL601
JL592
JL590
JL589
JL572
JL570
R562
C531
JL553
R558
JL555
JL556
JL557
JL558
JL559
JL560
JL561
JL562
JL563
JL564
JL565
JL566
R660
R659
R658
R657
R656
R655
C588
C589
C590
C545
CL501
R568
R565
IC503
R1027
R522
C543
C534
R549
JL546
R501
R502
R654
C942
JL547
C513
C591
C592
R529
R530
C572
C517
C518
CL1062
CL1063
CL1064
CL1065
CL1066
CL1067
CL1068
CL1069
CL1070
CL1071
CL1072
CL1073
CL1074
CL1075
CL1076
CL1077
CL1078
CL1079
CL1080
CL1081
CL1082
CL1083
CL1084
CL1085
CL1086
CL1087
R1018
CL1089
CL1088
CL1090
CL1093
CL1091
JL573
R584
C548
C551
R588
R593
C559
R604
R603
R608
R613
C563
C565
TP513
TP511
TP505
R560
C544
C533
C535
TP506
TP504
IC509
TP509
TP508
TP507
TP514
TP517
TP516
CN708
CN151
M151
S272
S271
CN703
CL1092
R503
TP501
TP502
C516
TP503
JL599
JL597
JL603
C570
C569
TP510
C568
C567
JL554
JL568
JL577
C553
JL585
JL583
JL581
R619
R628
JL608
R621
R625
R626
R627
JL604
JL605
JL606
JL607
0
0
10k
1k
1
MNT2
MNT0
MNT1
MNT3
0.1
10
10V
0.1
0.0015
1M
470k
1k
0.047
47k
2.2k
2.2k
2.2k
2.2k
1k
1k
2200p
2200p
1000p
10 10V
GND
10k
10k
NJM3404AM-TE2
68k
0
0.1
22000p
0
10k
10k
10k
0.1
0.1
10
10V
10
10V
220k
220k
1
10
10V
0.1
22
33k
0.01
0.47
10k
100k
0.1
1k
3.3k
10k
1M
100p
0.1
(TE)
1k
0.1
2200p
2200p
(FE)
(AVC)
CXD3068Q
(RFCK)
(WFCK)
30P
5P
5P
0
0.1
10 10V
0.1
10
10V
0.1
10000p
0
0
0
330
0
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
DGND
AGND
A5V
SPC970_BUS
A3V
M12V
MGND
D5V
D3V
DSP_BUS
ANALOG_BUS
DRVC
AVC
DVC
PI
TE
FE
FE
TE
PI
RFAC
MIRR
DATA_RF
EXCK
SBSO
BCLK
MDAT
LRCK
W
FCK
GSCO
R
SQCK
SQSO
FOK
LOCK
XRST_CD
DATA
XLAT
CLO
K
SENS
SC
LK
CO
UT
M
IRR
MD2
SC
OR
R
F_A
C
G
FS
M
UTE_C
D
C2PO
768FS
FE
TE
DOUT
SDEN
CLK_RF
LDON
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
SP+
SP-
SD-
SD+
M
D
P
LOAD+
LOAD-
FD-
FD+
TD-
TD+
PI
LIM_SW
W
AV
RB
DVDPDSW
CDPDSW
DFCT
OUT_SW
IN_SW
RF-AC
MIRR
PI
TE
FE
SDEN
RFAC
D3V
A5V
A5V
AGND
AGND
LIM_SW
A3V
CLK_RF
DATA_RF
LDON
SP-
SP+
FD-
FD+
SD-
SD+
TD-
TD+
AVC
AVC
OUT_SW
IN_SW
LOAD+
LOAD-
GND
FE/PI
DVDPDSW
CDPDSW
(1/5)
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR
VCC
GND
WAVRB BUFFER,
DRVC BUFFER
NC
OUT_SW
IN_SW
LOAD+
LOAD-
GND
(LOADING OUT)
(LOADING IN)
(LOADING)
(Page 26)
(Page 34)
(Page 34)
(Page 32)
(Page 31)
SCD-XB790
31
31
C587
JL618
JL617
R606
R632
C527
R554
R634
R642
C577
JL636
R556
JL630
C529
JL641
JL637
C584
R
6
4
4
R
6
45
R
5
5
9
C579
C582
C583
C530
C532
R563
R661
R594
R589
R590
C549
R505
R508
R506
R509
R512
C502
R581
R
5
8
2
J
L6
2
1
J
L
5
4
3
J
L
5
4
2
JL528
C520
C528
C526
R576
R597
C554
R515
JL517
JL516
C539
R572
R573
C541
C511
R523
IC502
JL521
C519
R534
C536
C562
R611
R524
R601
C558
C542 R555
R591
R599
C555
C550
C506
R513
R
5
1
6
R
5
1
8
C
5
1
0
C
5
0
9
JL519
JL520
R607
R602
R592
R595
C525
IC512
IC504
IC505
IC501
R507
0.1
15k
10k
560p
2.7k
6.8k
33k
10000p
2.7k
560p
22
16V
1
0
1
0
1
0
0.1
0.1
0.1
0.1
0.1
10
0
33k
33k
10k
0.1
4.7k
3.3k
4.7k
10k
0
0.1
10k
1
0
k
22 16V
10 10V
0.1
0
10k
0.1
0
0.1
10
10
0.1
0.1
10
BA5983FP
1
3.3k
0.47
680p
22k
10k
22k
680p
0.47
3.3k
2.7k
2.7k
680p
680p
0.1
10
1
0
1
0
0
.1
0
.1
4.7k
4.7k
4.7k
4.7k
0.1
BA5912AFP-YE2
TC7S66F
TC7S66F
3.3k
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
SPIN
SP_ON
SP+
SP-
SRDR
SFDR
MUTE_2D
MUTE_LOAD
FJMP1
FJMP2
LOAD_IN
LOAD_OUT
SPDA
LOAD-
LOAD+
TFDR
TRDR
FFDR
FRDR
SD+
SD-
FD-
FD+
TD-
TD+
SP_ERR
TRKSW
(2/5)
SPINDLE/LOADING
MOTOR DRIVE
O
I
G
+2.5V REGULATOR
SLED MOTOR DRIVE
COIL DRIVE,
FOCUS/TRACKING
TRACKING
COIL DRIVE
CONTROL SWITCH
TRACKING
COIL DRIVE
CONTROL SWITCH
µPC2905T-E1
5-12. SCHEMATIC DIAGRAM – MAIN Board (2/5) –
(Page 30)
SCD-XB790
32
32
5-13. SCHEMATIC DIAGRAM – MAIN Board (3/5) –
•
See page 42 for Waveforms.
•
See page 45 for IC Block Diagram.
JL769
JL770
JL771
JL772
JL773
JL774
R733
R734
R735
R736
R737
R738
JL1081
C724
C727
R541
R538
C521
R702
R703
JL1080
JL1075
IC706
C726
R772
IC814
C813
C811
C819
C812
CL871
CL872
CL873
CL870
CL772
CL771
JL777
CL770
C744
R743
C745 R742
R741
R740
JL1088
JL768
JL767
JL766
JL765
JL764
JL763
JL762
JL761
JL760
JL759
JL758
C743
JL757
JL756
JL755
C742
R732
JL754
JL753
JL752
JL751
JL750
C741
JL745
JL746
JL744
JL743
JL742
R731
R730
C740
JL741
JL740
JL738
JL737
JL736
JL735
JL734
JL731
JL929
C730
C725
CL1017
JL726
D903
FL705
R729
R725
R726
R727
R728
C728
C721
C720
R721
CL701
C723
C722
CL710
CL728
CL918
CL711
CL727
JL724
JL723
JL722
JL721
JL720
JL719
JL718
JL717
JL716
JL715
C718
R718
CL707
R780
C715
R713
C712
R712
R711
C711
R710
C709
C706
C752
C713
C747
C704
C798
C799
R705
C701
R706
C705
R540
R544
CL1008
C775
JL785
CL794
CL793
CL792
CL795
CL796
C770
CL750
JL784
JL783
JL782
JL781
CL781
CL780
CL791
C768
C769
R778
CL790
CL787
C767
R755
R766
C764
C763
R744
C762
CL774
CL775
CL773
C760
C761
CL778
R745
R746
CL779
R777
C765
R776
C766
C771
R762
R763
C773
R769
R761
R764
C772
C778
C779
FL702
C780
C777
C776
C781
C774
R767
FL704
FL703
IC708(2/2)
R704
C729
C731
FL706
IC703(2/2)
R724
R720
C703
C717
C716
R781
R716
R717
R719
C714
CL703
TP802
IC813
IC812
IC701
CL786
CL789
CL785
CL788
R759
R758
R757
TP705
R707
TP704
R708
C707
R709
C708
TP703
TP702
TP706
TP701
R714
R847
JL1076
JL1077
JL1078
JL1079
R765
FL701
C702
JL786
R770
CL776
JL776
CL777
R545
C523
IC703(1/2)
R701
IC708(1/2)
R756
R750
R768
10k
10k
10k
10k
10k
10k
0.1
10
10V
100k
100k
1500p
100k
100k
GM71VS18163CLT-6
0.1
22
SN74AHCT1G08DCKR
0.01
0.01
0.01
0.01
0.1
22
0.1
22
22
10k
0.1
0.1
10k
0.1
22
22
0.1
0.1
0.1
1SS367
0
1.8k
33k
3.3k
10k
0.1
1
0.1
33k
0.1
0.1
0.1
10k
0
3300p
10k
220p
10k
2.2k
0.01
10k
0.1
0.1
0.1
0.1
1
1
0.1
0.01
100k
10
10V
100k
0.1
10k
100k
0.1
0.1
0.1
0.1
100k
0.1
0
0
0.1
0.1
22
0.1
0.1
0.1
47k
47k
0
0.1
0
100p
0.047
22k
8.2k
0.47
2.2k
2.2k
1M
0.1
0.1
10 10V
10
10V
0.1
0.1
10
10V
4700p
47k
NJM3404AM-TE2
220k
10
10V
0.1
NJM3404AM-TE2
1k
1k
1
0.01
0.47
0
100
100k
1k
1
SN74LV245APWR
SN74LV245APWR
CXD1882R-1
0
0
0
100
(AGND)
1M
33p
68k
1000p
(RFAC)
10k
22
22k
10
10V
0
100k
1500p
NJM3404AM-TE2
220k
NJM3404AM-TE2
0
10k
100
B1
B2
B3
B4
B5
B6
B7
B8
B9
D1
D2
D3
D4
DSP_BUS
SPC970_BUS
ANALOG_BUS
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
WE
RAS
MA0
MA1
MA2
MA3
MA8
XMOE
BD8
BD9
BDA
BDB
BDC
BDD
BDE
BDF
LRCK
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
BD8
BD9
BDA
BDB
BDC
BDD
BDE
BDF
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
WE
XMOE
RAS
SD1
SD2
SD0
SD3
SD4
SD5
SDEF
SD7
MA4
MA5
MA6
MA7
D4
D3
D2
D1
D0
XRST_DVD
RF_AC
JIT
SPIN
SCOR
APDO
XSHD
SDCK
XSHD
XSAK
SDEF
GFS_V
D3V
D5V
A3V
DGND
AGND
A5V
BCLK
MDAT
D3V
XCAS
XCAS
DRVC
MA9
MA9
SD6
XDCK
MDP
MDIN
MDIN
AV0
AV1
AV2
AV3
AV4
AV5
AV6
AV7
SDEF
XSAK
AVC
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
XHRD
XHWR
XCS1882
XINT0
XINT1
DVC
GSCOR
EXCK
SBSO
WFCK
C2PO
XSHD
XDCK
XSAK
VDD
I/O0
I/O1
I/O2
I/O3
VDD
I/O4
I/O5
I/O6
I/O7
N.C.
N.C.
N.C.
WE
RAS
N.C.
N.C.
A0
A1
A2
A3
VDD
GND
I/O15
I/O14
I/O13
I/O12
GND
I/O11
I/O10
I/O9
I/O8
N.C.
N.C.
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
GND
G
V
(3/5)
D-RAM
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
SACD DECODER
(2/2)
(2/2)
DVC BUFFER
SPINDLE MOTOR DRIVE
(1/2)
BUFFER
(1/2)
INTEGRATOR
1
3
2
7
4
5
6
8
1
2
3
6
5
8
7
4
(Page
30)
(Page 34)
(Page 33)
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