Main Board Circuit Diagram:
7-5
P12
15
P11
14
P10
13
GND
12
P07
11
P06
10
P05
9
P04
8
P03
7
P02
6
P01
5
P00
4
/RESET
3
A1
2
/INT
1
P13
16
P14
17
P15
18
P16
19
P17
20
A0
21
SCL
22
SDA
23
VCC
24
U2
TCA1116(PW)
VCC_switch_3V3
10
R136
AGND
AGND
AGND
AGND
I2C_INT
I2C_RESET
200 R600red_led_battery (5-15)%
200 ohm
R601
200 R602
200
R603
200
R604
200
R605
white led battery(15-30%)
white led battery(30-45%)
white led battery(45-60%)
white led battery(60-75%)
white led battery(>75%)
33
R606 Vol-
33
R607 Vol+
33
R608
33
R609
Link key
Phone Key
BT Key
Vol-
Vol+
Phone Key
AGND
AGND
Link key
PW_KEY
PWR_LED_white
BT_blue_LED
white led battery(>75%)
white led battery(60-75%)
white led battery(45-60%)
white led battery(30-45%)
white led battery(15-30%)
red_led_battery (5-15)%
4.7K
R155
4.7K
R156
AGND
AGND
BT KeyR15433
BT_reset_in
1
2
3
4
5
6
7
8
9
10
11
12
13
J9
0.5S-CX-13PWB
C135
100NF
C151
100NF
C152
100NF
C134 1NF
C136
1NF
C137
1NF
C138
1NF
C139
1NF
C140
1NF
C141
1NF
C142
1NF
C143
1NF
C144
1NF
C145
1NF
C147
1NF
C148
1NF
C149
1NF
C150
1NF
I2C_CLK
I2C_DAT
1
2
3
4
5
6
J10
0.5S-CX-6PWB
JBL_link_white_LED
C146
1NF
VCC_switch_3V3
10k
R610
VCC_IO_expander_3V3
VCC_IO_expander_3V3
10k
R611
10k
R612
10k
R613
1
2
3
4
5
6
J2
B 6B-PH-K-S
BT_SPI_MOSI
BT_SPI_CLK
BT_SPI_MISO
BT_SPI_CSB
AGND
VCC_BT
C191
100NF
AGND
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
TP13
TP14
TP15
TP17
TP18
TP19
TP20
TP21
TP22