Sony MEX-BT3900U / MEX-BT3950U / MEX-BT39UW Service Manual ▷ View online
MEX-BT39UW/BT3900U/BT3950U
MEX-BT39UW/BT3900U/BT3950U
21
21
5-2. BLOCK DIAGRAM - AUDIO Section (2/2) -
R-CH
15
16
X1
4MHz
XTAL2
XTAL1
8
LOUT
A
ELECTRONIC VOLUME
IC401
SYSTEM CONTROLLER
IC501 (2/3)
AU_OUT_FL 36
AU_OUT_RL 38
AU_OUT_SR 39
R-CH
R-CH
FL+
FL–
4
1
9
FR+
FR–
2
12
RL+
CN301 (1/2)
I2C BUS CONTROLLED
POWER AMP
IC301 (1/2)
RL–
RR+
11
10
3
RR–
R-CH
R-CH
MUTE
Q406
MUTE
Q404
MUTE
Q402
xSIGNAL PATH
: TUNER
: CD PLAY
: AUDIO
: AUX IN
: BUS AUDIO IN
xR-ch is omitted due to same as L-ch.
IN-RL
11
IN-FL
12
I2C_SIO
2
I2C_SCK
4
OUT-RL- 7
OUT-RL+ 9
OUT-FL- 3
OUT-FL+ 5
R-CH
J402
J403 (3/3)
FRONT
AUDIO OUT
L
REAR/SUB
AUDIO OUT
R
L
R
J403 (2/3)
FRONT
AUDIO OUT
L
REAR
AUDIO OUT
R
L
R
SUB_OUT
(MONO)
DIAG
25
STB
22
BEEP
16
J901
AUX
9
ROUT
R-CH
SDA
19
SCL
18
PHASE LOCKED LOOP
(PLL)
IC001
L6
FM MIX
FMIN1
4
FMIN2
3
AMRFIN
1
AMSELIN2
29
AMSELIN1
28
AMSELOUT1
31
AMSELOUT2
32
30
I2C_SIO
29
I2C_SCK
59
DIAG
60
AMPSTB
BEEP
J1
(ANTENNA IN)
AU_IN_FL
33
FP1
FL_CH
RL_CH
SUB_CH
IN_LCH
ATT
BT-L_P
14
FN1
BT-L_N
15
AUX_LCH
5
TU_LCH
3
I2C_SIO
23
I2C_SCK
22
28
SUB OUT
(MONO)
R-CH
J403 (1/3)
BUS
AUDIO IN
L
R
BUS_LCH
1
R-CH
AU_IN_FR
AU_IN_RL
AU_IN_RR
AU_IN_SUB
AU_IN_RL
AU_IN_RR
AU_IN_SUB
AU_OUT_LCH
AU_OUT_RCH
AU_OUT_RCH
31
34
R-CH
30
32
FN2
R-CH
16
BUS_RCH
R-CH
2
FP2
R-CH
17
AUX_RCH
R-CH
7
AUX_GND
6
TU_RCH
R-CH
4
R-CH
27
28
R-CH (FRONT)
R-CH (REAR)
35
37
AU_OUT_FR
AU_OUT_RR
R-CH (REAR/SUB)
40
AU_OUT_SL
(BT39UW/BT3900U: US, Canadian)
(BT3950U)
BT3900U:
AEP, Russian, UK
AEP, Russian, UK
BT39UW/
BT3900U: US, Canadian/
BT3950U
BT3900U: US, Canadian/
BT3950U
(BT39UW/BT3900U: US, Canadian)
(Page 20)
MEX-BT39UW/BT3900U/BT3950U
MEX-BT39UW/BT3900U/BT3950U
22
22
5-3. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
LIQUID
CRYSTAL
DISPLAY
PANEL
LCD901
LCD DRIVER, LED CONTROL
IC901
SYSTEM CONTROLLER
IC501 (3/3)
LSW905 - 912, S901 - 907
(FRONT PANEL KEY)
RC_IN1
18
RC_IN0
97
J801
REMOTE IN
(VOLUME)
X502
32.768kHz
11
10
XOUT
XIN
13
15
X501
7.92MHz
OSCOUT
OSCIN
SIRCS
4
REMOTE CONTROL
SIGNAL RECEIVER
IC902
LED DRIVE
Q903
LED903, 905, 907, 909,
910, 912, 914, 916, 919,
921, 925, 928, 929, 932,
921, 925, 928, 929, 932,
934, 936, 938, 940,
LSW905 (1/2) - LSW912 (1/2)
ILLUMINATOR,
RING ILLUMINATOR
82 RE-IN0
94 KEYIN1
81 RE-IN1
ROTARY
ENCODER
RE901
91 KEYACK0
92 KEYACK1
LCD_DATA 64
LCD_CLK 63
LCD_CE 62
LCD_SO
1
LCD_CLK
2
LCD_CE
100
COLOR1
3
LED DRIVE
Q904
LED902, 904, 906, 908,
911, 913, 915, 917, 918,
920, 923, 924, 926, 931,
920, 923, 924, 926, 931,
933, 935, 937, 939,
LSW905 (2/2) - LSW912 (2/2)
ILLUMINATOR,
RING ILLUMINATOR
COLOR2
4
LED901
(LCD BACK LIGHT)
DIMMER
2
B
ACC
13
7
TEL-ATT
AMP-REM
ANT-REM
ANT-REM
5
6
6
+B
19
BATT
MULTIPLE VOLTAGE
REGULATOR
IC301 (2/2)
CN301 (2/2)
AUDIO+B
30
VP2 6
ANT-REM
AUDIO+8.5V
27
AMP-REM 29
MECHA+6V
33
MECHA+6V
PANEL+B
34
PANEL+B
VBUS
BU+B
37
B.U+5V
VP1 20
SERVO+3.3V
31
SERVO+3.3V
ACC
DETECT
Q301
LCD BACK LIGHT
DIMMER CONTROL
Q901
TEL-ATT
DETECT
DETECT
Q303
ACC_IN 57
TELATT 56
BU+3.3V
+3.3V
REGULATOR
IC402
MIC+3.3V
+3.3V
REGULATOR
IC202
VP 35
USB VBUS POWER SUPPLY
IC601
FGL
10
VIN 2
SYN/EN
8
HSDCTL
9
HSDSW
12
HSDSW
13
USB_ON 50
USB_OVR 52
SYNC_OUT 26
BATT
D806
D807
TH801
BACK-UP
CHECK
Q802
SONY BUS INTERFACE
IC801
UNISO
5
DATA_IN 9
UNISI
6
DATA_OUT 8
DATA_I/O
6
UNISCK
7
CLK_IN 11
CLK
4
BUS_ON
21
BUS_IN 12
BUS_ON
1
SYSRST
20
KEYIN0
95
RST 13
RST
2
BATT
3
4
5
2
6
7
CN801
BUS CONTROL IN
BU_CHECK 10
BUIN
19
XSYS_RST
BU_CHECK
PUSH ENTER/
SEL/
COM4
I
COM1
SEG48
I
SEG1
60, 55, 50 – 5
54 – 51
BT3900U: AEP, Russian, UK/
BT3950U
BT3950U
BACK-UP
CHECK
Q807, 808
(BT39UW/BT3900U: US, Canadian)
(Page 20)
MEX-BT39UW/BT3900U/BT3950U
MEX-BT39UW/BT3900U/BT3950U
23
23
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
• C : Panel designation.
• C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
• Power voltages is dc 14.4V and fed with regulated dc
power supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TUNER (FM)
( ) : TUNER (AM or MW)
< > : CD PLAY
( ) : TUNER (AM or MW)
< > : CD PLAY
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
F
: AUDIO
f
: TUNER
J
: CD PLAY
p : Bluetooth
c : USB
N
c : USB
N
: MIC
L : AUX IN
a : BUS AUDIO IN
a : BUS AUDIO IN
• Abbreviation
CND : Canadian model
EA
CND : Canadian model
EA
: Saudi Arabia model
MX
: Mexican model
RU
: Russian model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• W : Indicates side identifi ed with part number.
• f : Internal component.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• W : Indicates side identifi ed with part number.
• f : Internal component.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
• Abbreviation
CND : Canadian model
EA
CND : Canadian model
EA
: Saudi Arabia model
MX
: Mexican model
RU
: Russian model
• Circuit Boards Location
• Waveforms
– MAIN Board –
• Indication of transistor.
C
B
These are omitted.
E
Q
2
IC501 qd (OSCOUT)
2 V/DIV, 50 ns/DIV
126 ns
3.5 Vp-p
3
IC001 qh (XTAL1)
0.05 V/DIV, 50 ns/DIV
250 ns
0.05 Vp-p
1
IC501 qa (XOUT)
1 V/DIV, 20
Ps/DIV
30.5
Ps
2.9 Vp-p
MAIN board
SWITCH board
SERVO board
KEY board
– Front panel –
– Main unit –
BT board
ANTENNA board
MEX-BT39UW/BT3900U/BT3950U
MEX-BT39UW/BT3900U/BT3950U
24
24
Note 2: When SERVO board is detective, exchange
the complete mounted board.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
IC001
IC401
IC403
IC801
IC601
IC301
IC501
IC402
KEY BOARD
CN901
A
IC202
IC201
BT BOARD
1-876-642-
11
(11)
11
(11)
1-876-642-
ANTENNA BOARD
(SIDE A)
ANTENNA BOARD
(SIDE B)
(PATTERN ANTENNA)
FB408 (BT3950U)
JC264 (BT39UW/BT3900U: US, CND)
JC264 (BT39UW/BT3900U: US, CND)
1
EXCEPT BT3900U: AEP, RU, UK
2
BT3900U: AEP, RU, UK/BT3950U
3
1
2
12
13
B1
A1
B14
A14
1
37
2
36
21
20
40
1
1
16
17
32
1
10
0
80
81
50
51
30
31
1
13
26
25
14
27
JW370
C20
R401
C21
R402
C22
R403
C23
R404
C24
R405
R442
R443
R443
JC131
JW375
C25
C26
R407
JW377
C27
C28
R409
R601
R602
R603
R604
R410
R426
R427
R413
R414
R605
R41
1
R412
R406
R425
R606
R607
R608
R609
R415
R416
R417
JW387
R418
R419
JW389
FB801
FB802
R610
R611
CN402
R420
R421
R422
R423
JW393
R424
JW394
JC346
JW398
R429
JW399
R815
R816
R430
R431
R432
C203
D203
FB202
R206
CN201
FB201
D205
R202
R218
C206
R433
R434
R435
R436
JC356
R438
C401
C402
FB826
C809
D801
D802
D804
D803
C403
C405
R441
JC361
JL001
JC362
JL002
JC363
JL003
C407
JL004
JL005
C409
JC366
JL006
JL007
C600
JL008
C602
C603
C604
C410
C605
C411
C606
C412
C428
BT39UW/
BT3900U: US, CND
BT3900U: US, CND
BT39UW/
BT3900U: US, CND
BT3900U: US, CND
(BT39UW/BT3900U: US, CND)
(BT3950U)
BT3900U:
AEP, RU, UK
AEP, RU, UK
(BT3900U: AEP, RU, UK)
BT3900U:
AEP, RU, UK
AEP, RU, UK
EXCEPT BT3900U:
AEP, RU, UK
AEP, RU, UK
C430
C607
TH801
(BT39UW/BT3900U: US, CND)
(BT39UW/BT3900U: US, CND)
C413
C414
C435
C432
C434
C431
C609
C415
C416
C417
C418
C419
C611
C612
C613
C614
C420
C615
C421
C422
C423
C424
C425
S401
C426
R858
C436
C437
C438
C1
R862
R865
C5
R866
C442
C6
R867
C443
C444
C8
C445
C9
C447
JW201
R808
11
CN801
3
1
6
4
7
8
10
9
JW202
C802
JW207
JW208
JW209
JW400
Q301
JW212
Q303
JW214
JW215
JW216
JW217
D401
JW219
D403
D404
JW222
D601
L301
JW225
L302
JW226
JW227
JW230
JW231
JW232
JW234
JW235
D806
JW236
D807
JW237
JW240
JW245
JW246
R806
R813
JW247
JW250
JW253
JW256
JW257
JW258
JW259
JW260
JW261
JW456
JW262
1
7
14
8
JW263
JC408
JW264
JW265
JW266
JW268
JW269
FB501
JW270
JW271
R301
JW272
R553
R302
R303
JW273
R304
JC418
R305
JC419
JW275
R306
R308
JW279
R116
FB704
R500
FB705
R501
FB706
R502
R503
R503
R310
R504
JW281
R505
CN102
22
21
19
1
20
2
JW282
R506
JW283
R507
R508
JW284
R315
R121
JW285
L1
R509
R316
R122
L2
R317
R318
JW288
R319
R701
R702
L7
L8
R510
CN301
R705
R511
R512
R707
R513
R320
R514
R708
R321
R709
R516
JW293
R517
JW294
R325
R519
JW296
JW297
R710
R71
1
JW299
R713
R521
R716
R522
C100
R524
C101
R525
C103
R528
R529
CN701
JC256
JC257
R530
C300
C301
R531
C302
R532
C303
R533
JC260
C304
R534
R535
JC261
C305
JC262
C306
R536
R537
C308
R538
R539
JC265
CL001
CL002
JC267
CL003
JC268
CL004
JC269
CL006
C502
CL007
R540
CL008
C504
CL009
C312
R542
C313
C507
R543
C508
(BT39UW/BT3900U: US, CND)
(BT39UW/BT3900U: US, CND)
R544
JC271
C315
R11
C316
R12
JC273
R13
JC274
JC259
JC276
JC263
C318
C408
C427
C429
C429
FB409
CN408
CL010
R14
C319
JC469
JC275
CL011
C701
R549
CL012
JC277
CL013
C703
CL014
C704
C510
CL015
X501
CL016
C512
X502
CL017
C513
C320
CL018
C514
R550
C321
CL019
R551
R526
R526
C322
R552
C323
C518
C324
R554
R555
JC475
JC281
JC282
C327
C328
C710
CL020
R558
R210
C329
JC479
CL021
C71
1
CL022
CL023
CL024
C520
JC289
R807
(BT3900U:
AEP
, RU, UK/BT3950U)
R809
CL025
C521
CL026
C522
C200
CL027
C523
C330
CL028
CL029
R561
C332
R562
R597
C333
R563
C334
JC290
R564
C335
JC291
JW337
C215
R200
R203
C204
C21
1
C212
R565
C336
R566
R590
R560
C337
R567
CL030
R568
JC295
CL031
R1
R2
1
3
R3 (BT3900U: AEP, RU, UK/BT3950U)
FB3 (BT39UW/BT3900U: US, CND)
FB3 (BT39UW/BT3900U: US, CND)
R16 (BT3900U: AEP, RU, UK/BT3950U)
FB2 (BT39UW/BT3900U: US, CND)
FB2 (BT39UW/BT3900U: US, CND)
R15 (BT3900U: AEP, RU, UK/BT3950U)
FB1 (BT39UW/BT3900U: US, CND)
FB1 (BT39UW/BT3900U: US, CND)
R570
R571
R572
R573
R574
R575
R577
CL040
CL041
VR1
JW102
C158
R580
R581
R583
R584
JW300
R585
D101
JW301
D102
D103
C202
JC113
JC258
Q202
C205
C216
C210
R205
R208
R209
C207
1
10
1
3
3
1
18
1
9
3
5
4
4
4
6
3
1
Q201
D200
D202
R204
R587
D104
R588
R589
D105
D106
D107
D108
D109
JW309
R804
R812
R81
1
R810
C801
R805
R591
R212
R213
R216
R217
R214
R215
D204
R211
D301
D302
R592
D303
R593
D1
10
D304
JW310
R594
Q401
JW31
1
R595
D306
Q402
JW312
R596
Q403
JW313
Q404
R598
Q405
JW315
CL061
Q406
BCE
BCE
ECB
ECB
BCE
BCE
BCE
ECB
D116
JW316
Q407
D1
17
JW317
CL063
D1
18
JW318
CL064
Q409
D1
19
JW327
D501
CL065
JW126
CL066
CL067
D310
CL068
D31
1
CL069
D312
D313
D314
D315
D316
JW322
D317
D318
C263
CL070
CL071
L402
CL072
CL073
CL074
L405
JW329
CL075
Q802
CL076
JW137
CL077
D320
JW138
CL078
D321
CL079
D322
D323
JW523
Q807
D324
JW330
JW524
Q808
L601
L602
JW526
JW332
L603
JW334
JW335
JW529
CL081
JC292
JC270
JW336
CL082
JW339
JW147
JW148
JW533
JW340
JW341
JW342
JW343
X1
JC103
JW347
JW348
JW349
JC106
JW350
JW351
JC301
JW352
JC302
JW353
JW354
JW355
D731
JC307
JW357
JW358
JC116
FB401
FB402
JW362
C12
FB403
JW363
C13
JC120
JW364
JC121
JW365
C16
JC123
JW367
C17
JW368
C18
JW369
C19
S401
RESET
FU601
16
19
18
17
8
1
9
1-882-749-
12
SERVO
BOARD
BOARD
(1/2)
J1
(ANTENNA)
3
4
5
1
4
12
3
BCE
ECB
BCE
BCE
BCE
(BT3950U: EA)
(EXCEPT BT3950U: EA)
2
(BT39UW/BT3900U)
(BT39UW/BT3900U: US, CND)
(BT3950U)
(EXCEPT BT 3900U: AEP, RU, UK)
(BT3900U: AEP, RU, UK)
(BT3900U: AEP, RU, UK)
3
(BT3900U: AEP, UK)
BT39UW/
BT3900U: US, CND
BT3900U: US, CND
J403
L
REAR
AUDIO OUT
R
SUB OUT
(MONO)
L
FRONT
AUDIO OUT
R
J403
L
REAR
AUDIO OUT
R
L
BUS
AUDIO IN
R
L
FRONT
AUDIO OUT
R
J402
(BT3950U)
(BT39UW/BT3900U: US, CND)
(BT3900U: AEP, RU, UK)
L
REAR/SUB
AUDIO OUT
R
L
FRONT
AUDIO OUT
R
FRONT LCH (–)
FRONT LCH (+)
REAR LCH (–)
REAR LCH (+)
REAR RCH (–)
REAR RCH (+)
FRONT RCH (–)
FRONT RCH (+)
FRONT LCH (+)
REAR LCH (–)
REAR LCH (+)
REAR RCH (–)
REAR RCH (+)
FRONT RCH (–)
FRONT RCH (+)
ANT REM MAX 0.1A
ACC
BATT
GND
BATT
GND
(BT3900U: AEP, RU, UK)
(EXCEPT BT3900U: AEP, RU, UK)
ATT
AMP REM
MAX 0.3 A
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
GRN/BLK
VIO/BLK
GRY/BLK
WHT
GRN
VIO
GRY
BLU
RED
BLK
GRN/BLK
WHT/BLK
GRY/BLK
VIO/BLK
WHT/BLK
GRY/BLK
VIO/BLK
GRN
WHT
GRY
VIO
CN801
(BT39UW/BT3900U: US, CND)
RL+
RL–
FL+
FL–
FR+
FR–
TO
CN301
TO
CN301
(FRONT VIEW)
BUS
CONTROL IN
RR+
RR–
ACC GND
BLK
YEL
RED
BLU
YEL
1
2
3
7
8
4
5
6
1
2
3
4
5
6
7
8
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
2
3
4
5
6
7
8
ANT
REM
NC
NC
BATT
NC
NC
WHT/BLK
WHT
GRN/BLK
GRN
VIO/BLK
VIO
GRY/BLK
GRY
WHT
GRN/BLK
GRN
VIO/BLK
VIO
GRY/BLK
GRY
BLU
RED
YEL
BLK
YEL
BLK
ATT
AMP REM
MAX 0.3 A
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
1
2
3
4
5
9
10
11
12
13
6
14
7
15
8
16
J801
REMOTE
IN
SERVO
BOARD (2/2)
SWITCH
BOARD
CD MECHANISM
DECK
MG-101P-188//Q
(1/2)
(BT3900U: AEP, RU, UK/BT3950U)
(BT3900U/BT3950U)
(BT39UW)
(BT3950U)
(BT39UW/BT3900U)
BCE
BCE
L6
4
6
3
2
1
JW306
JW319
MIC IN
SUB OUT
(MONO)
3
1
(BT3900U: AEP, RU, UK)
(EXCEPT BT3900U: AEP, RU, UK)
1
2
CN1
MIC201
(CHASSIS)
(CHASSIS)
(CHASSIS)
CAM003
BT39UW/
BT3900U: US, CND
BT3900U: US, CND
BT39UW/
BT3900U: US, CND
BT3900U: US, CND
5-4. PRINTED WIRING BOARDS - MAIN Section -
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
(Page 28)
Note 1: When BT board is detective, exchange
the complete mounted board.
Note 3: When SWITCH board is detective, exchange
the MECHANICAL BLOCK ASSY (P).
Note 4: When the BT board is replaced, it is necessary to confi rm operation. Refer to “BLUETOOTH FUNCTION
CHECKING METHOD USING A CELLULAR PHONE” of the servicing notes (See page 6).
Click on the first or last page to see other MEX-BT3900U / MEX-BT3950U / MEX-BT39UW service manuals if exist.