4-1
Circuit Diagram
BT speaker
Firmware update
VR PCB
1
NC
2
GND
3 CE
4
FB
5 VDD
6 VDD.
7 LX
8 LX.
U3
ME2149S
L1
4.7UH
R10
180K
R11
75K
R12
27K_1%
R13
6.2k_1%
C1
1
104
C1
2
104
1 NC.
2
PROG
3
GN
D
.
4
VC
C
5
BAT
6 CHRG2
7 CHRG1
8 NC
9
GND
U4
ATD6009
C13
106
C14
106
+6V8
LED1
R14
1.2K
R15
2.7K
3
AUX
2
BT
1
4
OFF
SW2-A
7
AUX
6
BT
5
8
OFF
SW2-B
BT+
BT-
R19
1K
R20
1K
R21
22K
C18
102
IN
+
-
2
1
MIC
E
B
C
Q3
8050
R33
680R
LED2
SD
G
Q5
2302
R38
1K
R39
22K
R40
1K
C27
102
R42
1K
E
B
C
Q7
8050
R43
100K
R34
NC
E
B
C
Q9
8050
E
B
C
Q10
8050
R48
100K
R50
100K
C28
104
R4
9
100K
R51
100K
E
B
C
Q12
8050
R5
2
100K
R53
100K
R54
1K
R55
1K
D9
4148
D10
SS24
D4
SS24
1
2
FUSE
1
GND
2
ID
3
DP
4
DM
5
POWER
USB1
DC IN:5V/1.2A
BAT1
3.
7V/
750mA
L
R
GND
+5V
C42
104
C31
106
R68
2K
R30
2K
C24
334
C26
473
C29
473
R28
1K
R29
1K
C22
475
C33
220P
R27
2K
C23
475
C21
106
R31
10K
R32
NC
R37
100K
R47
100K
C34
225
MIC+
MIC-
G
S
D
Q15
ST2341
G
S
D
Q8
2301
G
S
D
Q6
2301
R44
0R
R70 1M
R7
5
100K
C54
470uF/10V
C55
104
C17 104
C64
226
C6
5
226
E
B
C
Q11
8050
E
B
C
Q13
8050
D1
SS24
1
2
3
4
5
6
PHONE1
EJ325D6U0BB3-69T
out
in
2
1
3
U6 IT7536
D2
4148
IN''
0UT'
GND1
C25
106
RX
TX
P20
ADAP
GND3
E
B
C
Q16
8550
R35
1K
R81
10K
USB_VDD
USB_GND
1
2
3
CON1
NPC3
1
2
3
VR1
IN'
OUT
GND2
1
2
3
CON2
NPC3
12
34
SW1
TC
-1312I
VCC
C66
106
C68
106
C69
106
C70
106
E
B
C
Q17
8050
R9
0
1K
R83
10K
E
B
C
Q18
8050
R85
100K
R8
6
1.
2K
R8
7
1K
R36
47K
D6
4148
C7
2
105
1
2
3
Q20
BAT54C
FB1 0R
FB2 0R
FB3
0R
FB4 FB120
FB5 FB120
R89
1K
1
CODEC_VIN
2
VDD_IO
3
SCL
4
SDA
5
ADAP
_IN
6
GND1
7
BAT_IN
8
SYS_PWR
9
BK
10
SK1
11
ON/OFF
12
LED1
13
LED2
14
P24
15
PA_EN
16
P02
17
FWD
18
REV
19
TXD
20
RXD
21
V-
22
V+
23
P0
3
24
GND2
25
RF
26
GND3
27
LI
NE_IN-DET
28
USB_ID
29
SL
IDE_DET
30 NFC
31 BUZZER
32 EAN
33 AOHPM
34 SPKR
35 SPKL
36 MIC_P
37 MIC_N
38 MIC_BIAS
39 AIR
40 AIL
41 GND4
42 RSTN
BT1
FW3717
MONO_ANT
R95
47K
E
B
C
Q4
8550
R41
10R
R88
100K
C75
104
R97
0R
BK-OUT
BAT_BT
in
out
3
1
2
U7
LN6206
R45
10K
E
B
C
Q2
8050
R46
10K
R78
5K1
R79
15K
R2
100K
R16
15K
C44
105
E
B
C
Q14
8050
R17 10K
R57 10R
R61
10K
C76
NC
R64
100K
C84
22P
C85
22P
C86
22P
C87
22P
C88
22P
C67
100uF/16V
1
2
C91
100UF
C92
22P
C93
22P
D3
4148
C9
4
226
R6
9
NC
R76
NC
BT_AUDIO
BT_AUDIO
P02
P16
RS
T-N
BK-0UT
MFB
RS
T-N
VDD-IO
P00
MFB
+5V
+5V
USB_VDD
AUDIO
P20
UART-TX
UART-RX
ADAP-IN-IC
BK-0UT
BAT_IN
SYS-POWER
POWER
VCC
SYS-POWER
VDD-IO
ADAP-
IN-
IC
BAT_IN
BAT_IN
SYS-POWER
P16
UART-TX
UART-RX
P2
0
P0
0
P02
VDD-IO
BT/AUX
BT/
A
UX
STBY
MUTE
AUX
AUX
DET
DET
AUX_IN
AUX_INA
Содержание BT2500B/W-00
Страница 27: ...3 2 WIRING DIAGRAM ...
Страница 30: ...5 1 TOP BOARD LAYOUT ...
Страница 31: ...5 2 BOTTOM BOARD LAYOUT ...
Страница 32: ...6 1 Exploded drawing 7 3 2 1 5 SPK 9 4 6 8 7 ...