Sony SCD-XB790 Service Manual ▷ View online
SCD-XB790
37
37
5-18. PRINTED WIRING BOARDS – AUDIO (Conductor Side)/HP Boards –
•
See page 25 for Circuit Boards Location.
IC308
IC315
IC304
IC301
IC306
IC307
IC305
IC309
1
4
5
8
1
4
8
5
1
7
14
8
14
13
39
40
27
26
52
1
1
4
8
5
1
4
8
5
1
4
8
5
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
2
1
3
IC302
E
1
3
DIGITAL (CD)
OUT OPTICAL
IC309
AUDIO BOARD
(CONDUCTOR SIDE)
1-683-979-
11
(11)
G
POWER
BOARD
CNP902
B
MAIN
BOARD
CN704
3
1
C
MAIN BOARD
CN701
D
MAIN BOARD
CN702
H
POWER
BOARD
CNP902
1
3
J301
R
L
ANALOG
2CH OUT
R
L
FRONT
R
L
SURR
CENTER
SUB
WOOFER
DIGITAL (CD)
OUT COAXIAL
J303
J302
ANALOG
5.1CH OUT
1
3
-1
-2
PHONE LEVEL
PHONES
HP BOARD
1-683-978-
11
(11)
A
B
C
D
E
1
2
3
4
5
6
7
8
1
3
1
6
• Semiconductor
Location
Ref. No.
Location
D301
E-7
D302
E-7
D308
D-5
D311
E-7
D312
E-7
D313
E-7
IC301
E-6
IC302
E-7
IC304
E-4
IC305
C-4
IC306
C-6
IC307
C-7
IC308
C-3
IC309
A-7
IC315
D-3
Q301
E-7
Q302
B-7
Q303
E-7
Q304
E-7
Q401
B-5
Q402
B-5
Q403
B-3
Q421
B-6
Q422
B-6
Q441
B-7
Q442
B-7
Q501
B-4
Q502
B-4
Q503
B-4
Q521
B-5
Q522
B-5
Q541
B-6
Q542
B-7
(Page 40)
(Page 28)
(Page 28)
(Page 28)
(Page 40)
SCD-XB790
38
38
5-19. PRINTED WIRING BOARDS – DISPLAY/KEY Boards –
•
See page 25 for Circuit Boards Location.
(Page 28)
(Page 40)
IC801
IC802
1 64
32 33
17
16
48
49
1
3
DISPLAY BOARD
1-683-976-
12
(12)
FL801
FLUORESCENT INDICATOR TUBE
E
E
E
1
5
J
POWER BOARD
CN905
OPEN/CLOSE
(MULTI-CHANNEL)
AMS
PUSH ENTER
S830
ROTARY ENCODER
1
3
5
4
NO810
(CHASSIS)
F
MAIN BOARD
CN706
2
1
KEY BOARD
1-683-977-
11
(12)
1
2
CN802
MENU
MULTI/2CH
SACD/CD
TIME/TEXT
A
B
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
S801 − 806,
S810 − 813
D
JW826
JW825
R819
• Semiconductor
Location
Ref. No.
Location
D803
D-6
IC801
A-5
IC802
B-8
Q801
B-8
Q802
B-7
Q803
B-7
SCD-XB790
39
39
5-20. SCHEMATIC DIAGRAM – DISPLAY/KEY Boards –
•
See page 42 for Waveforms.
(Page 41)
(Page 34)
R810
R811
R812
R813
R814
R815
C801
R805
R804
R803
R802
R801
C811
C815
C803
C802
R852
C851
C810
R851
R830
R818
C820
S830
S802
S801
S803
S804
S805
S806
R827
Q802
Q803
R806
R807
R808
IC801
CN811
CN812
R821
R820
R822
S812
S813
S811
S810
CN801
CN802
NO810
FL801
IC802
C832
C813
C814
Q801
1k
2.2k
2.2k
4.7k
10k
22k
0.1
100
100
100
100
3.3k
100p
47p
0.1
100
6.3V
100
100
6.3V
0.1
47
0
68
0.1
1k
DTC114EKA
DTC114EKA
100k
100k
100k
MSM9202-06GS-BK
2P
2P
2.2k
1k
2.2k
11P
5P
NJL74H400A
0.1
100p
0.047
DTC114EKA
S5
S6
S7
S8
S9
S10
S
1
S
2
S
3
S
4
3
G
4
G
5
G
6
G
7
G
8
G
9
G
10
G
1
1
G
1
2
G
13
G
14
G
1
5
G
16
G
S11
F
L
R
S
T
F
L
T
FL
C
L
K
FLD
A
T
A
3G
4G
5G
6G
7G
8G
9G
10G
11G
12G
13G
14G
15G
16G
FLDATA
FLCLK
FLT
FLRST
P
1
2
P
1
3
P
1
4
P
1
5
P
1
6
P
1
7
P
1
8
P
1
9
P
2
0
P12
P13
P14
P15
P16
P17
P18
P19
S
1
1
S
1
0
S
9
S
8
S
7
S
6
S
5
S
4
S
3
S
2
S
1
P20
P
2
1
P
2
2
P
2
3
P
2
4
P
2
5
P
2
6
P
2
7
P
28
P
2
9
P
3
0
P
3
1
P
3
2
P
3
3
P
3
4
P
2
1
P
2
2
P
2
3
P
2
4
P
2
5
P
2
6
P
2
7
P
2
8
P
2
9
P
3
0
P
3
1
P
32
P
3
3
P
3
4
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
1G
VFL
O
S
C
O
O
S
C
I
V
D
D
F
L
T
(C
E
)
F
L
.C
L
K
(C
L
)
F
L
.D
A
T
A
(D
I)
F
L
R
S
T
15G
16G
GND
P
1
P
2
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
AD2
AD1
S31
S32
S33
S34
S35
12G
13G
14G
GND
FLRST
FLT
KEY0
FLCLK
KEY1
FLDATA
RM
LED
+3.3V
GND
KEY2
+3.3V
(CHASSIS)
FLUORESCENT INDICATOR TUBE
TUBE DRIVER
FLUORESCENT INDICATOR
SEGMENT
DRIVE
DRIVE
GRID
DRIVE
GRID
TIME/TEXT
SACD/CD
MENU
MULTI/2CH
REMOTE
CONTROL
RECEIVER
OPEN/CLOSE
1
4
3
2
5
S830
AMS
PUSH ENTER
-33V
F1
F2
D803
SEL5E20CTP15
(MULTI-CHANNEL)
R819
10k
SCD-XB790
40
40
5-21. PRINTED WIRING BOARDS – POWER/POWER SW/PT Boards –
•
See page 25 for Circuit Boards Location.
IC901
IC903
IC902
IC906
IC905
IC904
1
3
1
3
1
3
1
3
1
3
1
3
E
C
B
(CHASSIS)
3
1
8
1
1-683-974-
11
(11)
POWER BOARD
1
10
E
MAIN
BOARD
CN707
1
9
G
AUDIO
BOARD
CN301
H
AUDIO
BOARD
CN306
J
DISPLAY
BOARD
CN802
1
5
CN991
1
2
2
1
2
1
S991
POWER
1-683-975-
11
(11)
1-683-973-
11
(11)
PT BOARD
POWER SW BOARD
(AC IN)
1
2
L901
LINE
FILTER
T902
POWER
TRANSFORMER
∗
∗
NOT REPLACEABLE:
BUILT IN TRANSFORMER
BUILT IN TRANSFORMER
T901
POWER
TRANSFORMER
∗
A
B
C
D
E
1
2
3
4
5
6
7
8
9
10
11
12
• Semiconductor Location
Ref. No.
Location
D901
A-6
D902
A-6
D903
C-6
D904
C-6
D905
C-6
D906
C-6
D907
C-5
D909
D-5
D910
D-5
D911
D-5
D912
D-5
D913
E-5
D914
E-5
D915
E-5
D916
E-5
D917
E-6
D918
E-6
D919
E-6
D920
E-6
D921
D-2
D922
D-1
D923
A-3
IC901
A-3
IC902
B-4
IC903
A-4
IC904
D-3
IC905
E-3
IC906
C-4
Q921
D-1
Ref. No.
Location
(Page 37)
(Page 37)
(Page 28)
(Page 38)
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