Sony CMT-BX70DBI / HCD-BX70DBI Service Manual ▷ View online
HCD-BX70DBi
HCD-BX70DBi
33
33
• See page 38 for IC Block Diagrams.
6-16. SCHEMATIC DIAGRAM - AMP/HEADPHONE Section -
CN320
C525
R543
C529
R542
R544
C526
R510
R512
R509
C523
R508
C506
R546
C503
R503
C524
R504
R507
R513
R515
R545
C527
C528
R514
C519
C501 C505
C504
R505
C502
R502
C511
R521
C512
R506
CN308
R516
R517
R518
R519
IC601
CN317
R133
R233
C131
C231
R232
R132
R537
R538
R539
R540
R587
R588
R589
R590
R583
R582
R581
R533
R532
R531
J301
R541
R524
R523
R536
R535
R534
R586
R585
R584
C531 C581
R522
R501
J500
5P
0.0022
470k
100
35V
35V
100
1/2W
470k
0.0022
2.2k
1k
47k
10p
1k
47
25V
0
47
25V
1k
10p
47k
2.2k
1k
0
10k
2200p
2200p
1k
470
10V
100p 100p
470p
47k
470p
47k
10
50V
470
10 50V
470
7P
STK433-730-E
8P
1k
1k
470p
470p
47k
47k
10k
10k
10k
10k
10k
10k
10k
10k
470
470
470
470
470
470
2.2k
2.2k
470
470
470
470
470
470
0.01
0.01
470
470
CH21 IN
CH2
NF
STBY
CH1
NF
CH1 IN
MON
IT
O
R
SUB
+PR
E
CH2 OUT
-
CH2
OUT+-
CH1
OUT
-
CH1 OUT
+
+VCC
-VC
C
-PR
E
R-OUT
L-OUT
+B
GND
-B
GND
STBY
MNT
NC
AUDIO-IN L
GND
AUDIO-IN R
HP-R
SP-R
HPGND
HP-L
SP-L
R-IN
L-IN
POWER AMP
2.2K
2.2K
22k
22k
AUDIO IN
PHONES
C518
0.1
C515
0.1
C521
EP501
EP502
(CHASSIS)
0.1
C522
0.1
(Page 29)
(Page 31)
(Page 31)
HCD-BX70DBi
HCD-BX70DBi
34
34
•
: Uses unleaded solder.
• See page 21 for Circuit Boards Location.
6-17. PRINTED WIRING BOARDS - PANEL Section -
C841
IC902
D915
R922
D905
R920
R919
Q901
C81
6
D904
R94
4
C919
C92
0
C917
C918
R93
4
R938
R93
7
R936
R935
R94
3
R942
Q903
Q905
C924
D807
C812
C811
R925
R921
C910
C908
R851
C90
7
FB901
R932
R933
R931
R92
9
R930
R852
C804
W801
W802
S803
IC901
C815
JW802
FL901
JW807
JW810
C814
L901
JW801
JW806
JW809
JW804
JW803
JW805
C805
JW81
1
C909
JW812
JW8
08
JW813
JW814
S801
D902
C838
R853
R854
R855
R856
R860
R861
R862
R863
R868
R864
R857
R869
R867
R865
R86
6
CN802
S807
S806
S805
S804
S812
S811
S813
S810
S809
S814
S821
S820
S819
S818
S815
S816
S817
FLUORESCENT INDICATOR TUBE
PANEL BOARD
1-876-052-
11, 12
(11, 12)
E
E
1
13
K
A
A
1
3
E
2C
1C
1
2
3
4
5
6
7
8
9
A
K
A
A
K
K
1B
2B
OPEN/CLOSE
E
MAIN BOARD
CN306
T801
DC/DC CONVERTER
STANDBY
POWER
(CHASSIS)
F
MAIN BOARD
CN322
1-876-055-
TOP KEY BOARD
Y
ENTER
DSGX
FUNCTION
AUDIO IN
+
+
–
VOL
1
4
TUNE –
–
TUNE +
PLAY MODE/
TUNING MODE
REPEAT/
FM MODE
CANCEL
CD
TUNER/
BAND
DAB
AUTOSCAN
iPod
S801, 803– 807,
S809 – 821
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
11
12
13
11, 12
(11, 12)
Ref. No. Location
• Semiconductor
Location
D807
C-12
D902
D-12
D903
B-1
D904
C-12
D905
C-12
D915
C-6
IC901
C-3
IC902
C-7
Q901
D-12
Q903
B-11
Q905
B-6
(Page 28)
(Page 28)
HCD-BX70DBi
HCD-BX70DBi
35
35
• See page 24 for waveforms. • See page 38 for IC Block Diagrams.
6-18. SCHEMATIC DIAGRAM - PANEL Section -
CN802
R856
R855
R854
R853
R868
R863
R862
R861
R860
R864
R865
R866
R867
R869
R857
D915
R925
R921
C804
Q905
R942
R943
IC902
C815
C917
C918
C919
C920
C814
C816
R935
R936
R937
R938
R944
R934
C924
C910
D807
R932
R933
R931
C909
C908
D905
D904
C811
C812
L901
R930
R919
C907
Q903
R920
C805
FB901
R929
Q901
T801
S801
S803
R851
R852
S807
S806
S805
S804
S820
S818
S815
S816
S817
S819
S821
S811
S812
S813
S814
S810
S809
FL901
R922
D902
IC901
C841
4P
15k
10k
4.7k
2.2k
10k
4.7k
2.2k
2.2k
1k
1k
2.2k
2.2k
4.7k
10k
15k
MC2838
470
47
1
2SC3052F
10k
22k
PT6302
22
50V
0.001
100p
100p
100p
22
50V
47p
1k
0
0
0
1k
2.2k
100p
0.01
UDZW-TE17-
6.2B
100
100
10k
47
50V
0.01
MC2838
MC2836
0.01
0.01
2.2k
0
0.022
CPH5504-TL-E
0
47
25V
2.2
RT1P441C
1k
2.2k
47
SLR325VCT31P
NJL24H400A
0.1
54
55
53
52
53
54
55
52
1G
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P1
1
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P1
1
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
P37
2G
3G
4G
5G
6G
7G
8G
9G
10G
11
G
1G
2G
3G
4G
5G
6G
7G
8G
9G
10G
11
G
KEY1
RETURN
KEY2
KEY3
DGND
+3.3V
GND
OUT
SIRCS
EVER 3.3V
KEY1
KEY1 RETURN
DGND
FL RESET
+9V
FL DATA
FL GND
4V
FLUORESCENT INDICATOR TUBE
INDICATOR TUBE
FLUORESCENT
LED
DRIVE
STANDBY
REMOTE CONTROL
RECEIVER
GRID DRIVE
DC/DC
CONVERTER
OSC
-1
-2
FL CS
FL CLOCK
STBY LED
DAB
AUTOSCAN
VOL
-
VOL
TUNE -
TUNE +
ENTER
REPEAT/
FM MODE
PLAY
TUNING
MODE
MODE/
DSGX
CANCEL
FUNCTION
-
CD
AUDIO IN
BAND
TUNER/
+
+
2
3
4
6
5
1
9
7
8
DRIVER
(CHASSIS)
1
13
iPod
(Page
30)
(Page 30)
HCD-BX70DBi
HCD-BX70DBi
36
36
•
: Uses unleaded solder.
• See page 21 for Circuit Boards Location.
6-19. PRINTED WIRING BOARD - POWER Board -
C903
C911
D907
D908
C905
R911
R910
R909
C902
R904
R906
C901
D922
R908
D906
D923
R905
R902
R901
D920
C906
C923
C922
JW924
JW925
JW923
JW931
JW932
JW911
D924
JW910
JW914
JW929
FH903
JW909
C921
FH904
JW926
C914
JW927
C936
FH901
FH902
C925
D91
2
F901
T902
LF901
RY901
D916
D918
CN904
D925
T901
D92
7
JW920
D926
F902
D914
D911
D913
CN901
D917
D91
9
WIRE900
1-876-054-
11, 12
(11, 12)
POWER BOARD
MAIN POWER
TRANSFORMER
SUB POWER
TRANSFORMER
NOT REPLACEABLE:
BUILT IN TRANSFORMER
BUILT IN TRANSFORMER
(AC IN)
1
3
K
A
A
K
K
A
K
A
A
K
A
A
LINE FILTER
J
MAIN BOARD
CN303
1
12
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
9
10
11
(CHASSIS)
Ref. No. Location
• Semiconductor
Location
D906
B-8
D907
C-6
D908
C-6
D911
F-8
D912
F-9
D913
E-8
D914
F-8
D916
G-8
D917
G-7
D918
G-8
D919
G-7
D920
F-11
D922
C-7
D923
C-7
D924
E-6
D925
D-7
D926
D-7
D927
E-7
(Page 28)
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