DOWNLOAD Sony HCD-BX20I / HCD-BX50BTI Service Manual ↓ Size: 4.94 MB | Pages: 70 in PDF or view online for FREE

Model
HCD-BX20I HCD-BX50BTI
Pages
70
Size
4.94 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-bx20i-hcd-bx50bti.pdf
Date
PREV: Sony CMT-BX20 / CMT-BX20I / CMT-BX50BTI / CMT-BX70DBI / SS-CBX20 Service Manual

Sony HCD-BX20I / HCD-BX50BTI Service Manual ▷ View online

HCD-BX20i/BX50BTi
HCD-BX20i/BX50BTi
33
33
6-12.  SCHEMATIC  DIAGRAM  - MAIN Section (1/3) -
• See page 42 for IC Block Diagrams.
R315
CN309
R209
C371
C375
R217
C116
C216
R128
R228
C369
C368
C367
IC304
Q203
R234
R134
R227
Q103
Q341
R345
C208
C132
C111
C23
2
C211
R225
C230
C130
C213
C113
R226
R126
R125
C203
C103
C202
C102
C201
C101
R124 R224
C391
C361
C355
Q392
R344
R364
Q303
Q302
R308
R396
Q393
R317
R356
C324
D304
C319
D330
C104 C204
JR107
JR207
R219
R221
C389
C382
C395
R220
C1
14
C120
R121
R120
R453
R361
R360
R359
Q340
C108
R307
JR214
JR219
JR213
JR211
JR223
JR222
JR221
R203
R103
R102
R202
IC312
R312
R314
R117
R109
C379
C377
JR201
JR101
R119
C348
Q390
R101
R201
Q319
CN305
C330
C217
C117
C394
C214
C220
R362
Q320
100k
7P
4.7k
0.1
0.1
47k
4.7
50V
4.7
50V
1k
1k
10
16V
0.1
470
16V
BD3499FV
2SC5938
4.7k
4.7k
22k
2SC5938
RT1P441C
47k
2.2
50V
0.0022
0.0047
0.0022
0.0047
22k
470p
470p
470p
470p
22k
22k
22k
1
1
1
50V
1
50V
1
1
22k
22k
470 10V
0.1
0.1
KTC3203Y-A
100
100
RT1P441C
RT1N141C
47
22k
ISA1235
AC1TP
47k
47k
100
16V
UDZW-TE17-
3.9B
220
10V
MA2J1110GLS0
1
1
0
0
100K
100K
100
16V
0.1
2.2
50V
100K
1
50V
1
50V
100K
100K
100
2.2K
10K
10K
RT1N141C
-TP-1
2.2
50V
1k
0
0
0
0
0
0
0
47k
47k
4.7k
4.7k
MC14052BDTR2
47
47
47k
4.7k
0.1
0.1
0
0
100K
0.1
KTC3205Y-A
RT1N141C-TP-1
21P
0.1
470P
470P
2.2
50V
1
50V
1
50V
2.2K
RT1N141C-TP-1
A1
A2
A3
A4
A6
A7
A8
A10
A9
C1
C2
C3
C4
C5
1
2
3
TUNER/DAB
/BTRX_
R
TUNER/DAB
/BT
RX_
L
CD/US
B_L
CD/US
B_R
BT
 RX_L
BT
 RX_
R
TUN
ER_
R
TUNER_
L
59
39
66
40
22
24
68
69
70
23
53
57
60
19
CD/USB_L
CD/USB_R
BT FUNC OUT_L
BT FUNC OUT_R
BT SELEC OUT_R
BT SELEC OUT_L
AIN
_L
AIN
_R
TUNER/DAB
/BT
RX_
L
TUNER/
DAB/BTRX_
R
IPOD_L
IPOD_R
100
L-IN
R-IN
AGND
STBY
±PRE
INH
VEE
GND
VCC
Y0
Y2
Y
Y3
Y1
B
A
X3
X0
X
X1
X2
NC
MNT
AVDD(3.3V)
CD DRIVE MUTE
MGND
VM(7V)
DVDD(3.3V)
D-OUT
DGND
SBSY
REQ
BUCK
BUS3
BUS2
BUS1
BUS0
AGND
L-OUT
DACGND
R-OUT
CCE
RST
(1/3)
ELECTRICAL VOLUME,
SURROUND/
TONE CONTROL
MUTING
CONTROL
Q340,341
SWITCH
MUTING
MUTING
VOLTAGE
DETECT
INPUT SELECTOR
Q302,303,390,392
R101,201
2.2K
4.7K
(BX20i)
(BX50BTi)
(BX20i)
(BX20i)
(BX20i)
ZDET/LRCKIN
INPUT SELECTOR,
(BX50BTi)
INVERTER
INVERTER
REGULATOR
+3.3V
(Page 27)
(Page 34)
(Page 37)
(Page 35)
(Page 35)
HCD-BX20i/BX50BTi
HCD-BX20i/BX50BTi
34
34
6-13.  SCHEMATIC  DIAGRAM  - MAIN Section (2/3) -
• See page 42 for Waveforms.    • See page 42 for IC Block Diagrams.    • See page 45 for IC Pin Function Description.
IC301
D318
D321
CN322
R408
R301
R462
C338
C364
R472
R477
C366
R467
R468
IC311
C339
C342
R466
R465
D309
C341
C340
C301
IC310
D323
R430
R429
R424
R422
R726
R728
R727
R725
R724
R722
R720
R719
R464
R717
R716
C316
R713
R412
C310
C311
C333
R709
R71
1
R706
R705
R704
R703
R702
R701
C499
JR498
R700
R792
R793
R791
R789
R781
R782
R783
R784
R785
R492
R493
R494
C498
R786
R487
R488
D774
R780
R778
R777
R774
R766
C766
R485
C362
R760
R759
R757
R753
R748
R747
R746
R741
R734
R733
R732
R731
CN301
CN311
CN306
R473
R773
R448
R745
R744
R433
R432
X301
R418
Q309
R111
R113
R112
R452
R455
Q310
C309
C331
R213
R211
R212
C308
IC309
C115
R611
R511
R600
R500
R114
R115
R216
R116
R208
R108
R207
R107
CN323
C344
C215
S001
CN310
R214
R215
R479
C110
C118
C218
C210
R456
Q301
R407
X302
R486
R770
R769
R768
R447
R5F3640DDFA
1N4002-B5
1N4002-B5
4P
2.2k
5.6k
1k
0.1
10 50V
1k
1k
0.1
4.7k
4.7k
BA6956AN
0.1
0.1
47k
47k
MA2J1
110GLS0
0.1
0.1
4.7
50V
PST3628NR
1N4002-B5
4.7k
4.7k
4.7k
4.7k
100
100
100
100
100
100
47k
100
10k
10k
0
0.1
0
10k
22p
22p
0.1
10k
220k
100
100
100
100
100
100
0.1
0
100
100
100
100
1k
100
100
100
100
100
10k
10k
10k
0.1
10k
10k
MC2836
100
100
100
1M
220k
0.01
100k
0.1
100
100
100
100
100
100
10k
10k
100
100
100
100
9P
5P
13P
10K
100
4.7K
100
100
4.7K
4.7K
32.768KHz
0
2SC3052F
100K
100K
100K
10K
2.2K
RT1N141C-TP-1
INVERTER
100
16V
2.2
50V
100K
100K
100K
0.1
MC14052BDTR2
1
50V
4.7k
4.7k
22k
22k
47K
100K
100k
100k
47k
47k
4.7k
4.7k
15P
0.22F
5.5V
1
50V
9P (EXCEPT BX20i:AEP)
11P (BX20i:AEP)
47K
100K
100
4.7
50V
4.7
50V
4.7
50V
4.7
50V
2.2k
2SC3052F
0
5MHz
100
100
100
4.7K
A1
A2
A3
A4
A6
A7
A8
A9
A10
B1
B2
B3
B4
B11
B10
B9
B8
B7
B6
B5
77
78
92
93
33
40
68
69
70
88
89
100
4
19
R718
100
18
91
4
39
TUNER_L
TUNER_R
45
BT SELEC OUT_L
BT FUNC OUT_L
BT FUNC OUT_R
BT SELEC OUT_R
1
2
3
6
6
R707
100
7
22
24
25
25
26
7
27
18
28
28
31
32
34
43
83
82
81
80
59
89
88
85
85
66
53
44
57
60
93
91
92
84
87
87
90
90
84
83
82
81
73
44
33
31
34
32
45
43
5
BT RX_R
BT RX_L
31
34
33
32
9
12
5
9
12
23
94
INH
VEE
GND
VCC
Y0
Y2
Y
Y3
Y1
B
A
X3
X0
X
X1
X2
VC
O+
O-
VM
VCC
I+
I-
GND
GND
DGND
KEY3
KEY2
KEY1 RETURN
SIRCS
EVER 3.3V
STBY LED
DGND
FL DATA
FL CLOCK
FL GND
4V
FL CS
KEY1
KEY1 RETURN
GND
RXD
BUSY
VDD
SCLK
TXD
PGM
RST
GND
RDS DA
T
A
RDS CLK
26
27
DO/STEREO
ST
 CLK
ST
 DIN
TUNED
AGND
R OUT
+9V
L OUT
ST
 CE
AINL
AGND
AINR
AOUTR
AGND
AOUTL
AV
D
D
5
DVDD5
DGND
(BT_RESET)
(BT_TXD)
(BT_R
TS)
(BT_RXD)
(BT_CTS)
(BT_A
V_ROLE)
CLOSE SW
OPEN SW
DGND
CLOSE
OPEN
SPEC IN
VREF
CDM LOAD OUT
CDM LOAD IN
CDM SW(OPEN)
CDM SW(CLOSE)
FL SCLK
FL CS
FL SD
STANDBY LED
KEY3
KEY2
KEY1
FL RESET
NC
NC
SIRCS
BYTE
XCIN
XCOUT
RESET
XOUT
XIN
NMI
AC CUT
RDS INT
SBSY
ST
 CLK
ST
 DA
T
A
 OUT
CD BUS2
CD BUS1
CD BUS0
RDS DA
T
A
ST
 CE
DA
T
A
 IN/STEREO
DA
T
A
TUNER TUNED
IIC CLK
IIC
AMP
 DA
T
A
AMP
 CLOCK
T
A
 LINE MUTE
STBY
-RELA
Y
NC
DAB RXD
USB RTS
SEL A
DAB TXD
BT DOUT
BT DIN
BT_RTS
PULL UP
PULL DOWN
BT AUDIO OUT MUTE
BT CTS
USB TXD
USB RXD
BT_AV_ROLE
BT_RESET
INH
NC
NC
NC
NC
USB CTS
NC
USB RESET
I-POWER MONIT
OR
STK-ON
CD RESET
USB POWER
NC
NC
NC
MODEL
 IN
CLINK_TX_DOUT
CLINK_RX_DIN
DMPOR
T
 POWER
CD ON
CD DRIVER MUTE
MP3 IREQ
CD CCE
CD CLK
DEC BUS SEL
NC
NC
KEY
 W
AKE UP
1.2V
NC
DAB-POWER
3.3V
NC
NC
DAB-POWER
BUS3
CD
(2/3)
1k
4.7k
(BX20i:US,CND/BX50BTi)
R786
(BX20i:AEP,AUS)
0
4.7k
(BX20i:SP)
R486
(EXCEPT BX20i:AEP,SP)
SYSTEM CONTROLLER
RESET SIGNAL
GENERATOR
RESET SWITCH
OUTPUT SELECTOR
LOADING
MOTOR DRIVE
TUNER (FM/AM)
SUPPLIED WITH THE
AM
FM 75
:
COAXIAL
ANTENNA
FL RESET
+9V
DISC TRAY
OPEN/CLOSE
DETECT
M001
(LOADING)
(BX50BTi)
ASSEMBLED BLOCK
AC DETECT
VCC
VSS
CN VSS
AVCC
AVSS
X5V FLAG
VSS
VCC
(BX50BTi)
(BX20i)
(NC)
CN001
5P
CN310
(BX20i:AEP)
(EXCEPT BX20i:SP)
(EXCEPT BX20i:AEP)
(EXCEPT
 BX20i:AEP)
(BX20i:AEP)
(EXCEPT
 BX20i:AEP)
(BX20i:AEP)
(Page 39)
(Page 39)
(Page 29)
(Page 33)
(Page 
35)
Ver. 1.4
HCD-BX20i/BX50BTi
HCD-BX20i/BX50BTi
35
35
6-14.  SCHEMATIC  DIAGRAM  - MAIN Section (3/3) -
• See page 42 for IC Block Diagrams.
D332
R498
R489
CN316
C359
C365
Q317
R460
R459
R478
R428
R475
Q316
R415
D313
R469
C387
R481
R482
R484
C307
R495
R409
C304
C337
R349
R348
R347
Q348
Q307
Q347
C219
C222
R253
L201
R230 R229
R153
C122
C119
L101
C123
C225
C125
R130 R129
Q338
C336
Q333
R427
R416
C350
D322
R441
R450
R449
R414
R417
D302
R403
C305
Q305
R404
C303
R406
Q306
Q304
Q343
D319
R458
C351
R496
Q344
Q342
D320
D303
R439
R421
R463
Q313
R316
R313
R311
R436
R435
Q345
R470
R471
R461
R425
R413
R41
1
R410
R419
R431
D329
IC307
IC305
C335
C325
CN314
CN325
CLP311
EP301
CN313
C223
EP302
CN303
C363
IC201
R222
C209
R223
C386
R210
R110
C127
C126
R122
R123
R131
C109
R105
R106
C352
R206
R104
R302
Q312
Q315
D325
IC306
R401
C373
R437
C380
CN324
CN312
R303
C30
2
D331
IC303
JW3
48
R309
C227
R231
C226
R204
R205
R420
D305
CN321
M901
MC2836
2.2
k
2.2
k
8P
0.1
470
16V
KTA1266GR
47
47
10k
1k
4.7k
2SC3052F
10k
MC2838
100k
47
16V
47
10
220k
47
16V
100
47k
47
16V
1
1M
22k
470k
2SC3052F
2SC3052F
2SC3052F
0.1
0.1
10
1/2W
4.7
4.7
10
1/2W
0.1
0.1
0.01
0.47
0.47
4.7
4.7
RT1N141C-TP-1
22
50V
RT1N141C-TP-1
22k
47k
10
50V
MC2836
4.7k
2.2
2.2
47
10k
UDZW-TE17-
3.6B
680
0.01
2SC3052F
680
100
16V
220k
2SC3052F
KTA1266GR
2SC3052F
MC2837
47k
100
16V
100k
2SC3052F
ISA1235
MC2837
MC2836
47k
10k
10k
ISA1235
100k
2.2k
47k
22k
2.2k
2SC3052F
100k
10k
47k
100k
47k
4.7k
100k
47k
47k
MA2J1110GLS0
KIA7809API-U/PF
0.1
100
16V
3P
10P
3P
0.01
12P
100
16V
R5523N001B-TR-F
22k
1
22k
22
25V
22k
22k
1
50V
1
50V
22k
22k
22k
1
4.7k
47k
47
10V
47k
4.7k
100k
RT1N441C
2SC3052F
MA2J1110GLS0
KIA7805API-U/PF
470
0.1
10
1
3P
6P
100k
0.1
1N4002-B5
NJM4558M-TE2
100
1
50V
22k
1
50V
4.7k
4.7k
47k
1N4002-B5
5P
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
C1
C2
C3
C4
C5
78
77
80
94
73
AIN_R
AIN_L
IPOD_L
IPOD_R
66
RELAY
ACDET
UNREG
UNREG GND
SUB GND
UNREG SUB
HP-L
HP-R
HPGND
SP-L
SP-R
AUDIO-IN R
GND
AUDIO-IN L
R-OUT
L-OUT
+B
GND
-B
USB UNREG
RXD
TXD
L+
R+
L-
R-
PROTECT
+B
-B
GND
PGND
VBUS 5V
SHI
ELD
(CHASSIS)
(CHASSIS)
USB UNREG GND
FAN+
GND
FAN+
(3/3)
DETECT
REGULATOR
+9V
O
G
I
(FAN)
FAN MOTOR DETECT
R
L
SPEAKER
Q307,347,348
Q316,317
FAN MOTOR
DRIVE
POWER
MONITOR
VBUS POWER
ON/OFF SWITCH
LINE AMP
Q342-344
DC DETECT
Q304-306
REGULATOR
B+ SWITCH
Q312,313
DRIVE
RELAY
Q333,338
DETECT
PROTECT
+5V REGULATOR
REGULATOR
+9V
O
G
I
O
G
I
VCC
GND
J302
KIA7809API-U/PF
(Page 
34)
(Page 33)
(Page 31)
(Page 37)
(Page 37)
(Page 41)
(Page 33)
HCD-BX20i/BX50BTi
HCD-BX20i/BX50BTi
36
36
6-15.  PRINTED  WIRING  BOARDS  - HEADPHONE/AMP Section -
• 
 : Uses unleaded solder.
• See page 25 for Circuit Boards Location.
CN317
JW501
J500
J301
JW505
JW502
R584
C131
R534
R537
R582
R585
C531
R58
3
R23
3
R581
R586
R589
C581
R540
R539
R538
R588
R532
R533
R536
R133
R232
R531
R535
C231
R132
R590
R587
C504
C522
C521
EP502
EP501
R544
R516
R518
R545
R504
R506
C524
R514
C525
C515
C526
R508
C523
C518
C528
R523
R502
R515
R546
R507
R503
R513
R501
R512
C502
C501
R505
R510
R509
R543
C527
C505
R524
R519
R517
R522
R521
CN308
C512
JW589
JW585
JW586
JW588
C503
CN320
R541
R542
JW582
C529
C506
JW583
JW581
C511
C519
JW584
JW587
IC601
1
8
1-876-056-
HP BOARD
G
PHONES
AUDIO IN
MAIN BOARD
CN316
1-876-053-
11, 12
(11, 12)
AMP BOARD
H
MAIN BOARD
CN321
D
1
5
MAIN BOARD
CN309
A
B
C
D
E
F
G
1
2
3
4
5
6
11, 12
(11, 12)
(CHASSIS)
(CHASSIS)
(BX20i: AEP)
(BX20i: AEP)
(BX20i: AEP)
(Page 32)
(Page 32)
(Page 32)
Ver. 1.4
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