MEX-BT39UW/BT3900U/BT3950U
MEX-BT39UW/BT3900U/BT3950U
2727
BOARD
A
CN901
KEY
(1/3)
BOARD
MAIN
2
(2/3)
BOARD
MAIN
3
3
IC B/D
IC B/D
IC B/D
4
MAIN
(2/3)
BOARD
0
00
0
0
0
0
0
0
0
00
0(1.3)
8.5(6.8)
0(4.2)
8.5(6.8)
3.1(2.9)
1.1(2.9)
3.1(2.9)
0(1.2)
0(1.2)
8.5
0(1.7)
2.2
3.8
3.7
3.8
5.6
0.3(1.9)
8.5
3(3.6)
7.1
3.9(5)
3.4
3.1(3.3)
6.2
3.1(3.3)
6.2
3.9
3.9
3.9 3.6
3.6
3.6
3.6
3.6
3.9 3.6
3.6
3.6
3.9 3.2
3.9
3.6 3.2
3.6
3.9
8.5
3.6
3.1
3.1
8.4
3.9
3.6
3.6
3.6
0
3.3
0
3.3
3.3
3.3
0
3.3
0
3.3
0
0
3.3
8.5
8.5
1.3
MAIN BOARD (3/3)
IC401
IC001
50VC410 10
BD3467FV-E2
IC401
ELECTRONIC VOLUME
BUS_LCH
BUS_RCH
TU_LCH
TU_RCH
AUX_LCH
AUX_GND
AUX_RCH
DP1
DN
DP2
EP1
EN
EP2
FP1
FN1
FN2
FP2
NCO
NCO
NCO
MUTE
I2C_SCK
I2C_SIO
GND
FIL
VCC(8.5V)
AU_OUT_RCH
AU_OUT_LCH
NCO
AU_IN_SUB
AU_IN_RL
AU_IN_RR
AU_IN_FL
AU_IN_FR
AU_OUT_FR
AU_OUT_FL
AU_OUT_RR
AU_OUT_RL
AU_OUT_SR
AU_OUT_SL
FB403
100pC423
50V10C422
50V10C425
220R404
R402 220
100pC412
100pC430
10kR413
10kR426
100pC428
220R423
10kR411
R403 10k
100pC426
0.1C414
10kR405
50V10C420
100pC421
220R410
FB402
10kR424
470
R415
2.2k
R419
C158 1000p
1000pC442
12k
R418
0
R420
470
R416
CAM003
1C436
1C427
1C429
(BT39UW/BT3900U: US, CND)
1C437
1
LCH_P
LCH_N
RCH_N
RCH_P
C431
1C432
1C434
1C435
C443 1
C444 1
0
L402
10kR438
50V10C419
0R432
0R431
0R430
C100 0.1
50V10C413
10kR42210kR409
50V10C424
0R116
0R435
0R436
R406
0
12k
R417
RTAN140M-T111-1
Q401
MUTE
RTAN140M-T111-1
Q402
MUTE
RTAN140M-T111-1
Q403
MUTE
RTAN140M-T111-1
Q404
MUTE
RTAN140M-T111-1
Q405
MUTE
RTAN140M-T111-1
Q406
MUTE
50V2.2C417
50V2.2C418
0
R441
1C438
220R407
220R421
D117
D118
C101 1000p
C203
0.47
D110
RKZ6.8B2KGP1
D108
RKZ6.8B2KGP1
D107
RKZ6.8B2KGP1
D106
RKZ6.8B2KGP1
D105
RKZ6.8B2KGP1
RKZ6.8B2KGP1
D104
RKZ6.8B2KGP1
D103
RKZ6.8B2KGP1
D102
RKZ6.8B2KGP1
D101
RKZ18B2KGP1
D109
RKZ6.8B2KGP1D116
0R434
0R433
16V220C415
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN402
AU_GND
AU_IN_RCH
AU_GND
AU_IN_LCH
AU_GND
AU-SUB_CH
AU_GND
AU_RL_CH
AU_FL_CH
AU_GND
AU_GND
AU_FR_CH
AU_RR_CH
20P
CN102
1
USB_GND
2
USB_VBUS
3
D-
4
D+
5
GND
6
KEY_GND
7
AUX_L
8
AUX_R
9
AUX_GND
10
RE_0
11
RE_1
12
KEY_1
13
KEY_0
14
SIRCS
15
LCD_DATA
16
LCD_CE
17
LCD_CLK
18
ILL(FP+B)
19
PANEL_SW
20
GND
D119 RKZ6.8B2KGP1
C103
0.1
0R122
0R121
L405 0
R13 100
J1
JW126
R15
FB1
FB2FB3
0
JW102
16V47C28
2.2C13
3.3uH
L1
JW148
4.7kR11
33pC8
470k
R2
0.1C26
1000pC5
4MHz
X1
JW147
15p
C6
470k
R1
0.01C22
0.1C24
R16R3 0 0
560uHL7
1000p
C1
L2
2.2uH
JW138
0.47C16
0.1
C9
0.22C12
1C21
L6
FM MIX
1
2
34
6
0.01C20
0.1C25
12p
C18
R14 100
JW137
VR1
22R12
TEF6617T/V1/S470, 518
(EXCEPT BT3900U: AEP, UK)
IC001
TEF6617T/V1/S470/M5, 518
(BT3900U: AEP, UK)
PHASE LOCKED LOOP(PLL)
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
0.1C17
560uHL8
0.01C23
0.01C19
0.1C27
11
12
13
14
15
16
18
19
17
20
21
22
BUS5
BUS8
BUS7
CL076
CL069
CL061
CL066
CL074
CL065
CL079
CL072
CL073
CL068
CL070
CL077
CL064
CL078
CL067
CL071
CL075
CL063
G
J402
4P
C405 0
ILL+B
USB_D+
USB_D-
RE0
RE1
KEY1
KEY0
SIRCS
LCD_DATA
LCD_CE
LCD_CLK
NOSE_SW
SERVO
(1/2)
BOARD
(ANTENNA)
-4
-3
-1
-2
40
39
38
37
36
35
34
7
6
5
4
3
2
1
33
32
30
31
8
27
28
29
9
10
11
12
13
14
24
17
25
26
23
22
21
20
19
18
15
16
18
7
6
5
4
3
2
1
17
20
19
32
30
31
8
27
28
29
9
10
11
12
13
14
24
25
26
23
22
21
15
16
12
A
6
B
8
E
14 15 16943
F
D
H
I
J
72 10
G
11
C
5 131
LBAT54ALT1G
D204
16V
C200
10
C202
0.1
RCH_P
LCH_N
RCH_N
BT_POWER
BT_RTS
BT_CTS
BT_TX
BT_RX
LCH_P
BT_MUTE
BT_RESET
DGND
15
LCH_P
MIC+_IN
17
13
18
BT200
16
LCH_N
MIC_OUT
MIC–_IN
AU_GND
RCH_P
12
10
14
11
RCH_N
MUTE
6
UART_CTS
MODULE_PON
8
4
9
7
UART_RTS
3.3
DGND
RESET
UART_TX
3
1
5
2
UART_RX
BT
BOARD
ANTENNA
MIC201
BOARD
(PATTERN ANTENNA)
CN1
C215
0.01
C207
0.1
C205
1
C216
1
R206 0
FB201
0
FB202
0
1
2
34
5
6
NLASB3157DFT2G
IC201
NO
GND
NCCOM
VDD
IN
C212
0.1
LRB751V-40T1G
D200
54
321
TK11133CSCL-G
IC202
CONT
GND
NOISE VOUT
VIN
DRA5114E0L
Q202
DRA5114E0L
Q201
RKZ6.8B2KGP1
D203
RKZ6.8B2KGP1
D202
R200
1k
R202
0
R205
0
R218
1k
R208
2.2k
C206
4.7
C211
4.7
R203
4.7k
R204
2.2k
C210
1000p
R209
1k
C204
0.1
BT_MIC_DET
+3.3V REGULATOR
IC202
IC201
MIC INPUT SELECT
Q201, 202
B+ SWITCH
(BT3950U)
(BT3900U: AEP, RU, UK)
BT39UW/
BT3900U: US, CND
BT39UW/BT3900U:
US, CND
BT39UW/BT3900U:
US, CND
(BT39UW/BT3900U: US, CND)
(BT3900U: AEP, RU, UK/BT3950U)
(BT3900U: AEP, RU, UK/BT3950U)
1k (BT39UW/BT3900U: US, CND)
0 (BT3950U)
R414, 427
2.2uH
JW319
RKZ6.8B2KGP1
D205
BUS6
1
2
3
3P
CN201
MIC_SIGNAL
MIC_GND
MIC_DETECT
1
3
MIC IN
(BT3900U: AEP, RU, UK)
J403
6P
R
L
REAR
AUDIO OUT
L
R
AUDIO OUT
FRONT
SUB OUT
(MONO)
BUS
L
AUDIO IN
R
BT39UW/BT3900U:
US, CND/BT3950U
(BT3950U) (BT39UW/BT3900U: US, CND)
L
FRONT
R
AUDIO OUT
R
L
AUDIO OUT
REAR/SUB
R414
R427
1
2
3
3P
CN408
SUB_OUT
GND
SUB_OUT
C408
100p
FB409
1
SUB OUT
3
(MONO)
(CHASSIS)
(CHASSIS)
(CHASSIS)
R443
JW365
R442
0
0
FB408
R412 0
R425
(EXCEPT BT3900U: AEP, RU, UK)
(BT3900U: AEP, RU, UK)
0
JC264
0
EXCEPT BT3900U:
AEP, RU, UK
(BT39UW/BT3900U: US, CND)
BT39UW/BT3900U:
US, CND
RESET
(BT3950U)
5-7. SCHEMATIC DIAGRAM - MAIN Section (3/3) -
• See page 23 for Waveforms. • See page 30 for IC Block Diagrams.
(Page 26)
(Page 29)
(Page 25)
(Page 26)
Note 2: When SERVO board is detective, exchange the complete mounted
board.
Note 1: When BT board is detective, exchange the complete mounted board.
Note 3: When the BT board is replaced, it is necessary to confi rm operation.
Refer to “BLUETOOTH FUNCTION CHECKING METHOD US-
ING A CELLULAR PHONE” of the servicing notes (See page 6).
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