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Flow Chart of Troubleshooting
U617
4
GND
3
NC
C810
BT_SPKOUT-
BT_SPKOUT+
V_BAT
1
OUT
2
VDD
VBT_EN
C649
VBT30
C801
C811
C855
C853
R816
C856
R822
R823
BT_TX
BT_RX
C821
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V_BAT
U618
1
VOUT2 6
EN2
2
VOUT1 5
VIN
3
EN1
7
C652
R658
ANT801
2
1
C800
C802
U801
30
ANT
PIO_0
10
USB_DP
PIO_1
9
USB_DN
PIO_2
38
SPK_N
PIO_3
37
SPK_P
PIO_4
PIO_5
15
PCM_SYNC
PIO_9
14
PCM_IN
PIO_10
8
PCM_OUT
PIO_11
13
PCM_CLK
SPI_CLK
18
RESET
SPI_MISO
20
VDD_IN
SPI_CSB
4
VDD_RF
SPI_MOSI
5
UART_RTS
AIO_0
7
UART_CTS
AIO_1
12
UART_RX
MIC_P
11
UART_TX
MIC_N
61 6 25 29
35
7-34
VBAT33
VBT30
4
VSS
C653
C654
28
27
26
24
17
2
31
BTCX_PRI
32
BTCX_RXIND
33
BTCX_WL
19
21
22
23
C818
1
3
BT_MIC+
36
34
BT_MIC-
C819
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