Sony MEX-BT3800U / MEX-BT3807U / MEX-BT3850U / MEX-BT38UW Service Manual ▷ View online
MEX-BT38UW/BT3800U/BT3807U/BT3850U
MEX-BT38UW/BT3800U/BT3807U/BT3850U
25
25
4-4. PRINTED WIRING BOARDS - MAIN Section (1/2) -
•
: Uses unleaded solder.
• See page 24 for Circuit Boards Location.
R400
R401
R403
R404
R406
R407
R408 R409
R600
R602
Q470
Q471
R412
C32
R413
R415
R800
Q862
R803
FB4
Q480
Q482
E
E
E
E
E
Q483
R618
Q484
Q485
R815
R816
R817
R818
Q490
R819
Q493
R820
R821
R822
C400
C405
C406
CN810
R830
R831
R834
R837
R838
R456
R457
C809
R847
R460
R461
R462
R463
R464
R470
C828
C829
C830
C834
C838
R490
R491
R492
R493
C840
C459
C460
R880
C845
R881
R882
C847
R883
R884
D400
R885
R886
R887
R889
D600
R890
D601
R891
R892
R893
Q701
Q703
R898
R899
IC401
C880
C881
C882
C883
FB105
IC812
IC813
IC814
R101
R102
R103
R104
C899
R106
R304
R305
R306
R309
R500
R502
R503
R504
R505
R506
D470
R702
D472
R704
R705
R511
R706
R513
R514
R709
R515
R516
R518
R519
R710
R711
R713
R714
R520
R521
R522
C101
R525
C102
R526
C103
R527
C104
R528
R529
R530
R531
R532
R533
C304
R534
C305
R535
C306
R536
C307
R537
C308
R538
C309
R539
C500
C501
C503
C310
R540
C311
R541
C506
R542
C507
C508
R544
C509
C316
R546
C318
C702
C703
R17
C704
C510
R18
C705
C511
R19
C512
C707
C513
C708
C514
R550
C709
C515
R551
R552
C323
R553
C519
C325
R555
R556
R557
R557
C710
R558
R560
R565
R567
R6
R571
R572
R578
R590
D117
D118
D119
D502
Q600
D505
L400
D702
D703
D704
D705
IC501
IC502
IC503
Q820
Q821
Q822
Q823
Q824
Q825
Q826
Q827
C14
C15
C122
R612
D611
D612
1
7
8
14
R611
R613
R614
R615
R617
C611
IC601
R616
R478
R479
R488
R489
C499
C455
C456
C105
D115
R517
R561
R561
D116
R111
R112
R112
D120
R501
R543
R545
R545
1
3
R100
CN110
D111
D112
D113
D114
R494
BE
B E
B E B E
1
1
2
B
E
B E
21
20
40
1
B
E
E
B
E
1
100
30
31
81
80
50
51
BE
BE
BE
BE
B E
B E
BE
6
1
3
3
4
G
D
S
1
2
3
4
1
3
3
4
5
1
4
4
5
8
1
4
5
8
K
A
K
A A
K
1-878-708-
12
MAIN BOARD
(COMPONENT SIDE)
MIC801
(BT3850U)
(BT3807U)
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
BT38UW/BT3800U:
US, CND/BT3850U: E
US, CND/BT3850U: E
BT38UW/BT3800U:
US, CND/BT3850U: E
BT3800U: AEP, UK/
BT3807U/BT3850U: EA
US, CND/BT3850U: E
BT3800U: AEP, UK/
BT3807U/BT3850U: EA
(BT3800U: AEP, UK/BT3850U)
(BT3800U: AEP, UK/BT3807U)
BT38UW/BT3800U/
BT3807U
BT3807U
(BT38UW/BT3800U/BT3850U)
(BT38UW/BT3800U: US, CND/BT3807U)
(BT38UW/BT3800U/BT3850U: EA)
BT38UW/BT3800U:
US, CND/BT3850U
US, CND/BT3850U
(BT3807U)
SERVO
BOARD
BOARD
(1/2)
MEX-BT38UW/BT3800U/BT3807U/BT3850U
MEX-BT38UW/BT3800U/BT3807U/BT3850U
26
26
C20
C21
C22
C23
C24
C25
C26
C27
FB418
FB419
Q851
Q852
Q853
Q854
FB420
R416
R801
FB1
Q861
FB2
FB3
R805
R806
R807
R808
R808
R809
R810
R811
R812
R810
R811
R812
R813
R823
R824
R825
R826
C402
R829
JL001
JL003
JL004
C408
JL005
JL007
JL008
JL009
R832
R833
R835
R836
JL010
JL011
C415
JL012
JL013
JL014
C801
JL015
JL016
C803
JL017
JL018
C805
JL019
C807
JL020
JL021
R849
JL022
JL023
JL024
JL025
C812
C813
JL027
JL028
R851
R852
R855
C860
R856
R858
R472
R473
C822
C823
R860
C1
R861
C826
R862
R863
R864
C5
R865
C6
R867
C8
R480
C9
R482
R483
R484
JL045
R485
JL046
JL047
R873
JL050
JL051
JL052
JL053
JL054
JL055
JL056
JL057
C850
C851
C853
C854
C855
C856
C857
C858
C858
C470
C859
C471
C472
C473
C474
D801
C861
D802
C864
C865
C486
C487
D820
D824
D821
IC801
D823
R301
R302
R303
D851
D852
D853
D854
R900
R712
IC851
IC852
C301
C302
C110
IC1
Q597
Q598
Q599
C504
C505
R929
C312
C313
R10
C314
R11
R12
R13
R547
R14
R548
R15
R549
R16
C320
C324
FB566
C327
R559
C333
C334
R568
R569
R1
R2
R3
R4
R5
R570
C924
R579
VR1
C930
R585
D306
FU851
Q802
Q803
W1
W2
FB14
FB15
C12
C13
C16
C17
C18
C19
J701
L701
L851
L852
C804
C806
C852
C863
C476
R701
CN701
C303
C701
C319
D303
D304
D305
D309
D310
D311
D312
D701
J901
J1
L2
L6
IC301
C413
C414
C457
C458
C463
C464
C480
C482
C483
C484
C485
L7
L8
C315
C317
C321
C326
1
13
26
14
BT800
S101
CN811
L110
R110
C112
X501
X502
C401
C403
C407
C502
CN350
C28
L1
CN501
C100
S502
X1
D855
C475
4
6
1
3
7
8
11
10
9
CNJ600
R610
D610
C600
TH600
R468
R469
3
1
CN410
R878
CN101
C111
CN1
C322
C610
G
S
D
D
D
D
D
D
G
S
D
D
D
D
G
S
D
D
1
16
17
32
1
4
5
8
1
4
5
8
1
PL03
3
4
5
5
18
19
17
16
8
9
1
1
37
2
36
1
3
B1
A1
A14
B14
8
1
9 k
10 k
(FREQUENCY SELECT)
(ANTENNA IN)
FU701
K
K
K
A
A
A
1-878-708-
12
MAIN BOARD
(CONDUCTOR SIDE)
(BT3850U: E)
L
R
FRONT AUDIO
OUT
L
R
L
R
BUS AUDIO
IN
REAR AUDIO
OUT
E
E
E
(NC)
RESET
1
3
MIC IN
J801
E
E
BT BOARD
E
E
SERVO
BOARD (2/2)
SENSOR
BOARD
CD MECHANISM
DECK
MG-101Z-188//Q
1
9
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
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
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
1
9
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
GRN/BLK
VIO/BLK
GRY/BLK
WHT
GRN
VIO
GRY
BLU
RED
BLK
2
2
10
3
3
11
4
4
12
5
5
13
6
6
14
7
7
15
8
8
1
2
3
4
5
6
7
8
16
RL+
RL–
GRN/BLK
WHT/BLK
GRY/BLK
VIO/BLK
WHT/BLK
GRY/BLK
VIO/BLK
GRN
WHT
GRY
VIO
FL+
FL–
FR+
FR–
RR+
RR–
ACC GND
BLK
YEL
RED
BLU
ANT
REM
NC
NC
BATT
NC
NC
TO
CN701
YEL
ATT
AMP REM
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
ATT
AMP REM
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
REMOTE
IN
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
A
KEY BOARD
CN901
(FRONT VIEW)
BUS
CONTROL
IN
CNJ600
1
3
SUB OUT
(MONO)
J401
BT3800U: AEP, UK/
BT3807U
BT3807U
(BT38UW/BT3800U: US, CND/BT3850U: E)
(BT3800U: AEP, UK/BT3807U/BT3850U: EA)
(BT38UW/BT3800U: US, CND/BT3850U: E)
(BT3800U: AEP, UK/BT3807U/BT3850U: EA)
(BT38UW/BT3800U: US, CND/BT3850U: E)
(BT3800U: AEP, UK/BT3807U/BT3850U: EA)
2
1
20
19
(BT38UW/BT3800U: US, CND/BT3850U)
(BT3800U: AEP, UK/BT3807U)
1-876-642-
11
(11)
1-876-642-
11
(11)
ANTENNA BOARD
(SIDE A)
ANTENNA BOARD
(SIDE B)
(PATTERN ANTENNA)
4-5. PRINTED WIRING BOARDS - MAIN Section (2/2) -
•
: Uses unleaded solder.
• See page 24 for Circuit Boards Location.
Note: 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).
(Page 31)
MEX-BT38UW/BT3800U/BT3807U/BT3850U
MEX-BT38UW/BT3800U/BT3807U/BT3850U
27
27
(3/4)
MAIN
BOARD
1
(4/4)
MAIN
BOARD
2
(2/4)
3
MAIN
BOARD
IC B/D
IC B/D
IC B/D
5
0
6.1
0
2.4
5
3.3
3.3
3.3
3.3
1.7
1.6
0
0.6
0
6.1
0.6
0
0
3.3
14.2
14.2
14.2
7.2
14.2
14.2
5.1
5.1
3.3
3.3
5.1
5.1
5.1
14.2
14.2
13
0.5
4
1.2
0.7
14.2
5.1
5.1
13
5.1
5.1
0
4.8
0
0
5.1
5.1
0
5.1
5.1
JL022
2SC3052EF-T1-LEF
Q703
JL012
10V
100
C403
MAZ8180GMLS0
D703
15k
R600
JL013
0.01
C408
JL008
1000p
C705
JL023
JL025
100
R403
1k
R602
JL005
0
R409
16V
10
C401
1k
R406
MAZ8180GMLS0
D704
JL014
1k
R613
8P
CNJ600
7
8
4
5
6
1
2
3
10k
R705
10V
100
C407
MAZ8180GMLS0
D612
100
R400
MAZ8062GMLS0
D600
0.01
C400
JL010
TH600
0.01
C402
R610
100
MAZ8180GMLS0
D610
JL019
JL028
R617
330k
10k
R706
0
R612
0
R618
JL027
4.7k
R711
1k
R407
JL024
RT1N141C-TP-1
BATTERY CHECK
Q600
MAZ8180GMLS0
D601
100
R401
MAZ8180GMLS0
D705
JL016
14
13
12
11
10
9
8
7
6
5
4
3
2
1
BA8271F-E2
IC601
BUS_ON
RST
BA
TT
CLK
VREF
DA
TA_I/O
GND
DA
TA_OUT
DA
TA_IN
BU_CHECK
CLK_IN
BUS_IN
RST
VCC
3300p
C709
JL020
100
R611
0.47
C707
JL007
JL015
MAZ8180GMLS0
D702
0.01
C611
JL017
2SC3052EF-T1-LEF
Q701
0.1
C610
JL001
JL018
100k
R404
JL021
MA2ZD14001S0
D611
1000p
C704
47k
R709
JL004
47k
R710
47k
R704
1k
R614
330k
R616
JL003
0.01
C924
0
R408
25V
470
C600
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
28P
CN350
NCO
NCO
SYS_RST
BU_3.3V
BU_GND
NCO(FLASH_W)
VBUS_ON
Z_MUTE
VBUS_CHECK
D_GND
TXD(MC-BUS)
RXD(MC-BUS)
MECHA_8.5V
USB_GND
DR_6V
DR_GND
CD_ON
CDM_ON
AU_ATT
AU_LCH
AU_GND
AU_RCH
A_GND
A_3.3V
EJECT_OK
OPEN_REQ
BU_CHECK
WAKE_UP
JL011
J701
100
R615
0.47
C708
3300p
C710
0
R415
0
R416
0
R413
R714
R713
R712
39k
R861
2SB1690KT146
Q854
0.1
C865
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q861
MAZ8056GMLS0
D853
0.1
C851
4.7k
R867
10k
R873
0.22
C850
MA2J1110GLS0
D854
8
7
6
5
4
3
2
1
TPS40200DRG4
IC851
RC
SS
COMP
FB
GND
DR
V
ISNS
VCC
1.5k
R855
470p
C856
RT1N141C-TP-1
Q852
100k
R858
MA24D5000BS0
D852
6
5
4
3
2
1
D
D
G
S
D
D
RSQ035P03TR
Q853
330k
R860
1k
R878
10k
R865
1500p
C858
0.1
C861
1
C857
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q851
100k
R864
0.1
C854
47uH
L851
36V
2A
FU851
0.1
C864
68k
R856
16V
220
C863
100k
R862
470p
C855
1
C860
15p
C859
68uH
L852
8
7
6
5
4
3
2
1
TPS2051BDRG4
IC852
GND
IN
IN
/EN
/OC
OUT
OUT
OUT
MAZ8120GMLS0
D851
47k
R851
47k
R852
1
C853
25V
470
C852
22k
R863
560p
C406
560p
C405
FB418
FB419
FB420
0
L400
17
18
20
22
19
21
23
1
7
6
5
2
4
8
9
10
11
16
14
15
13
28
27
24
25
12
MC_TX
CD_ON
CDM_ON
EJECT_OK
WAKE_UP
ACC_IN
UNISI
UNISO
BU_CHECK
VBUS_ON
UNISCK
Z_MUTE
BUS_ON
MC_RX
USB_ON
USB_OVR
DD_ON
RC0
RC1
SYS_RST
TEL_A
TT
BU_CHECK
(1/4)
MAIN BOARD
USB POWER
IC852
IC851
DC/DC CONVERTER
SONY BUS
IC601
LEVEL SHIFT
ACCESSORY
CHECK
ON/OFF SWITCH
DC/DC CONVERTER
Q854, 861
DC/DC CONVERTER
DC/DC CONVERTER
Q851, 852
INTERFACE
BUS CONTROL
IN
REMOTE
IN
SERVO
BOARD
BOARD
SENSOR
(1/2)
MG-101Z-188//Q
DECK
CD MECHANISM
J
4
B
16
6
9
11
D
15
H
L
10
K
3
5
12
C
F
1
E
8
G
14
A
2
13
I
7
• See page 33 for IC Block Diagrams.
4-6. SCHEMATIC DIAGRAM - MAIN Section (1/4) -
(Page 29)
(Page 28)
(Page 30)
MEX-BT38UW/BT3800U/BT3807U/BT3850U
MEX-BT38UW/BT3800U/BT3807U/BT3850U
28
28
4
BOARD
MAIN
(4/4)
3
BOARD
MAIN
(1/4)
MAIN
(3/4)
BOARD
5
IC B/D
IC B/D
MAIN
IC B/D
BOARD
(4/4)
7
MAIN
BOARD
(3/4)
8
0
0
0
0
0
3.3
0
4.2
4.2
4.2
4.2
4.2
4.2
8.4
1.2
1.5
0
0.5
1.3
0
3.3
5
0
0
0
0
3.3
3.3
0
4.2
0
4.2
4.2
4.2
4.2
4.2
8.4
4.2
4.2
0
0
0
0
3.3
0
3.3
3.3
4.2
2.3
3.5
0
3.1
0
0.5
0
3.1
0
3.7
3.8
1.3
3.7
6.7
5.7
8
0
8
5.7
8
8
5.4
0.8
3
4.6
3.7
3
100
R815
100
R816
100
R817
100
R818
100
R819
100
R820
100
R821
100
R822
100
R823
100
R824
100k
R809
100k
R810
100k
R811
100k
R812
100k
R813
100
R805
100
R803
100
R806
100
R807
100
R808
LBAT54CLT1G
D802
RT1N141C-TP-1
Q802
LBAT54ALT1G
D801
10k
R801
0.1
C801
0.01
C803
0.01
C805
16V
47
C804
10V
100
C806
0.01
C807
1
2
3
3P
CN811
EXT_MIC_IN
A-GND
MIC_DETECT
4.7k
R825
1000p
C823
1k
R829
C826
4.7
2.2k
R832
0
R830
1000p
C828
2.2k
R831
4.7
C830
4.7k
R833
LRB751V-40T1G
D823
D820
MAZ8068GMLS0
8
7
6
5
4
3
2
1
NJM4580V(TE2)
IC813
8
7
6
5
4
3
2
1
NJM4580V(TE2)
IC814
RT1N141C-TP-1
Q823
0.047
C880
Q826
RT1N141C-TP-1
0
C809
1
2
2P
CN810
MIC_IN
A-GND
RT1P141C-TP-1
Q803
RT1P141C-TP-1
Q820
RT1P141C-TP-1
Q821
1k
R834
C822
1000p
0
R826
100k
R847
0
R849
1
C838
3.9k
R886
3.9k
R887
RT1N141C-TP-1
Q822
1
C840
100k
R884
0.1
C845
1
C847
22k
R880
22k
R881
0
R883
0
R882
RT1N141C-TP-1
Q824
RT1P141C-TP-1
Q825
0
R893
220k
R890
220k
R889
22k
R891
0.01
C882
0.01
C881
0.1
C883
1k
R892
RT1P141C-TP-1
Q827
0
R898
1
2
3
4
5
6
TS5A3159DCKR
IC812
NO
GND
NC
COM
V+
IN
C834
0.1
MAZ8120GMLS0
D821
0
R800
C899
1000p
BT800
MIC_IN-
MIC_IN+
BT_INT-HF
BT_CVC
BT_PLAY
BT_STATUS0
BT_STATUS1
BT_STATUS2
BT_RESET
GND
VDD_3.3V
VDD_8.5V
A-GND
BT_AUDIO_L
A-GND
BT_AUDIO_R
BT_STATUS3
BT_MUTE
BT_FR
BT_FF
GND
BT_TEST1
BT_TEST2
BT_POW_ON
BT_OPRPOW
BT_MFUNC
C812
4.7
1k
R899
1k
R900
4.7
C829
5
4
3
2
1
TK11133CSCL-G
IC801
CONT
GND
NP
VOUT
VIN
C813
1000p
S
SSM3J05FU
Q862
0
R836
0
R835
R838
R837
MAZ8068GMLS0
D824
33
29
30
31
32
34
35
24
25
27
28
36
100k
R885
0.01
C22
1
C21
0
R19
VR1
33k
R10
GND_1
0.1
C24
68k
R6
L2
2.2uH
0
R17
0.1
C26
1
C14
VSM
1
C15
TU_RCH
0
15p
R15
4.7k
R11
16V
47
C28
0.01
C20
32
31
30
29
28
27
1
2
3
4
5
6
26
25
24
7
8
9
23
22
21
20
10
11
12
19
18
17
13
14
15
16
TEF6617T/V1/S470.518
IC1
AMRFIN
AMRFDEC
FMIN2
FMIN1
GNDRF
VCC2
AMRFAGC
LOUT
ROUT
GNDAUD
AMIFAGC2
MPXIN
MPXOUT
RSSI
XTAL2
XTAL1
GNDD
SCL
SDA
VREF
VREGSUP
VCC1
GND
VCODEC
PLL
PLLREF
TEST
AMSELIN1
AMSELIN2
AMIFAGC1
AMSELOUT1
AMSELOUT2
0
R18
FB2
0
R5
560uH
L8
1000p
C1
0.47
C16
8.5V
I2C_SCK
0
R4
560uH
L7
0.1
C27
100
R13
470k
R2
2.2
C13
22
R12
0.1
C25
L6
FM MIX
1
2
3
4
6
0.01
C23
1000p
C5
FB4
33p
C8
3.3uH
L1
FB1
4MHz
X1
0
R16
0.01
C19
TU_LCH
0
R3
12p
C18
0.22
C12
I2C_SIO
0.1
C9
470k
R1
C6
C32
10p
FB3
100
R14
0.1
C17
BT_FF
BT_FR
BT_MUTE
BT_ST3
BT_ST2
BT_ST1
BT_ST0
BT_PLAY
BT_CVC
BT_INT
BT_TE1
BT_TE2
BT_ON
BT_OP
BT_MF
BT_RST
BT_POW
BT_L
BT_R
MAIN BOARD (2/4)
MIC AMP
IC814
+3.3V REGULATOR
IC801
MIC AMP,
IC813
MIC INPUT SELECT
IC812
NOISE FILTER
G
V
V
G
MIC AMP
Q826, 827
B+ SWITCH
GAIN CONTROL
Q802, 803
REGULATOR CONTROL
BOARD
BT
ANTENNA BOARD
CN1
(PATTERN ANTENNA)
MIC AMP
SWITCH
Q820-822
B+ SWITCH
BT3807U/BT3850U: EA
BT3800UW/BT3800U:
BT3800UW/BT3800U:
BT3807U/BT3850U: EA
(BT3800UW/BT3800U: US, CND/BT3850U: E)
PLL
US, CND/BT3850U: E
BT3807U/BT3850U: EA
IC1
US, CND/BT3850U: E
(CHASSIS)
BT3800U: AEP, UK/
(ANTENNA IN)
J1
BT3800U: AEP, UK/
BT3800U: AEP, UK/
(CHASSIS)
J801
MIC IN
MIC801
J
4
B
16
6
9
11
D
15
H
10
17
3
5
12
C
F
18
1
E
8
G
14
A
2
13
I
7
13
12
11
10
9
8
7
6
5
4
3
2
1
14
15
16
17
18
19
20
21
22
23
24
25
26
• See page 33 for IC Block Diagrams.
4-7. SCHEMATIC DIAGRAM - MAIN Section (2/4) -
(Page 30)
(Page 29)
(Page
30)
(Page 29)
(Page 27)
Note: 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-BT3800U / MEX-BT3807U / MEX-BT3850U / MEX-BT38UW service manuals if exist.