MEX-BT38UW/BT3800U/BT3807U/BT3850U
MEX-BT38UW/BT3800U/BT3807U/BT3850U
28
28
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
NJM4580V(TE2)
IC813
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
TS5A3159DCKR
IC812
C834
0.1
MAZ8120GMLS0
D821
0
R800
C899
1000p
BT800
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
3
2
1
TK11133CSCL-G
IC801
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
TEF6617T/V1/S470.518
IC1
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
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) -
Note:
When the BT board is replaced, it is necessary to con
fi
rm operation. Refer to “BLUETOOTH FUNCTION
CHECKING METHOD USING A CELLULAR PHONE” of the servicing notes (See page 6).