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Flow Chart of Troubleshooting
9-22
L400
R406
C413
OSC400
2
1
C431
R408
V_RF_S3_2.7V
VMSMP_2.6V
VMMC_2.8V
5
VCC
U401
2
GND
1
INA
3
NC
4 OUTY
C435
R410
C408
C414
C429
C434
C462
C433
VTCXO_2.85V
L401
C409
BAT400
NEG
2
POS
1
C457
VMSMP_2.6V
VMSMA_2.6V
VRX_2.85V
C400
B
S
U
B
V
6I
LX2
I7
IN1B
I8
IN1A
I9
TP_VPD
FB2
H7
FB1
H8
LX1
H9
PGND3
I1
DR1
I2
REFBP
I3
CHGINA
I4
BATTA
I5
HFPWR
G8
PGND1
G9
LX3
H1
FB3
H2
REFOUT
H3
CHGINB
H4
H5
BATTB
PWRHOLD
H6
D+
F9
OUT3
G1
IN4
G2
ONO|
G3
ENO3
G4
ENBUCK3
G5
6
G
N
O
M
T
T
A
B
ENBUFF
G7
IN7
F1
OUT4
F2
ENO6
F3
ENO13
F4
PWRON
F5
VICHG
F6
F7
ENO4
OUT12
F8
OUT14
E2
VCOIN
E3
VL
E4
RSTIN
E5
ENO5
E6
IO
E7
E8
VCC
D-
E9
I2CDAT
D3
I2CCLK
D4
32KHZ
D5
SIMCLK
D6
SIMRST
D7
DAT
D8
A
S
U
B
V
9
D
XOUT
E1
ENO14
IRQB
C4
SIMDAT
C5
COMP1
C6
RESETB
C7
SEO
C8
OUT11
C9
XIN
D1
OUT5
D2
B5
CLKIN
OEB
B6
TCXOOUT
B7
COMP2
B8
D
N
G
9
B
OUT6
C1
INV1
C2
C3
TCXOIN
A6
OUT2
A7
IN2
A8
OUT1
A9
OUT7
B1
IN5
B2
INV2
B3
FB13
B4
C
N
1
C
N
2
IN3
A1
OUT8
A2
OUT9
A3
OUT10
A4
OUT13
A5
U400
R414
C432
C419
C425
C426
C430
R413
R416
VSIM_3.0V
L402
VTOUCH_3.3V
VMOT_3.0V
R402
VBAT
R401
VMSMP_2.6V
R407
VMSME_1.8V
C421
C420
TA_USB_5.0V
C428
C424
VBT_2.6V
C412
VMSMP_2.6V
C461
MV_USB_3.3V
C411
C402
VCM_3.0V
R433
470K
C403
R415
R405
TP_PSHOLD
C415
R429
R438
C422
C418
R411
R412
C405
V_RF_S3_2.7V
VUSB_OUT_5.0V
C427
VMSMC_1.2V
C423
VBAT
VBAT
C416
C401
VMSMP_2.6V
V_RF_S2_2.1V
C404
USIM_CLK
USIM_IO
SIM_IO
SIM_CLK
SIM_RST
USB_OE_N
USB_DAT
USB_SEO
JIG_ON
ON_SW_SENSE
USIM_RST
RTC_CLK
TCXO_EN
TCXO_OUT
USB_DM_MODEM
USB_DP_MODEM
PM_INT_N
EAR_KEY
EAR_SW
VRX_2.85V_EN
MV_CORE_EN
ICHRG
RST_N
PS_HOLD
ON_SW
REF_OUT
AMUX_OUT
TCXO
PM_I2C_SDA
PM_I2C_SCL
TCXO_EN
C400
C401
2
0
4
C
3
0
4
C
4
0
4
C
5
0
4
C
8
0
4
C
9
0
4
C
C411
C412
C413
4
1
4
C
5
1
4
C
C416
C418
C419
0
2
4
C
1
2
4
C
2
2
4
C
3
2
4
C
4
2
4
C
C425
C426
C427
8
2
4
C
9
2
4
C
C430
1
3
4
C
2
3
4
C
3
3
4
C
C434
5
3
4
C
0
4
4
C
1
4
4
C
7
5
4
C
1
6
4
C
C462
L400
L401
L402
L404
OSC400
4
0
4
R
5
0
4
R
6
0
4
R
7
0
4
R
R408
R409
0
1
4
R
1
1
4
R
2
1
4
R
3
1
4
R
4
1
4
R
R415
R416
R429
R433
R444
3
1
5
R
8
3
5
R
0
0
4
U
’
T
+
G
W
EL
4
9
6
8
X
A
M’
1
0
4
U
S
F
4
0
H
S
7
C
T
2
0
4
B-
XL
T
0
C115
6
1
1
C
7
1
1
C
1
2
1
C
8
1
1
C
7
2
1
C
7
4
1
C
8
4
1
C
OSC100
2
1
1
R
R116
TP102
TP103
U102
BC63B239A04-IYB-E4S
1
1
2
2
3
3
ANT100
R112
1
3
OSC100
4
2
C116
SDIO_DATA0|CSPI_MISO|UART_TX
G7
SPI_CLK
H1
PCM_OUT
H2
PCM_CLK
H3
PCM_SYNC
H4
GI
D_
S
S
V
5
H
S
D
A
P_
D
D
V
6
H
SDIO_CLKCSPI_CLK
H7
SDIO_DATA1|CSPI_INT|UART_RTS
F6
SDIO_DATA2|UART_RX
F7
OI
D
A
R_
D
D
V
1
G
SPI_MOSI
G2
RST#
G3
PCM_IN
G4
TEST_EN
G5
SDIO_DATA3|CSPI_CS#|UART_CTS
G6
SPI_CS#
E4
SDIO_SD_CS#
E5
CLK_32K
E6
PIO4
E7
RF_P
F2
N
E
E
R
C
S_
S
S
V
3
F
SPI_MISO
F4
N|CS
F5
PIO9
C7
N|CS
D2
N|CS
D4
PIO7
D5
SDIO_CMDCSPI_MOSI
D6
E
R
O
C_
D
D
V
7
D
OI
D
A
R_
S
S
V
1
E
RF_N
E2
GI
D_
S
S
V
6
B
PIO5
B7
O
L_
S
S
V
1
C
N|CS
C2
A
N
A_
S
S
V
3
C
PIO0
C4
PIO2
C5
PIO3
C6
VREGOUT_H
A4
VREGIN_H
A5
VREGENABLE
A6
S
D
A
P_
D
D
V
7
A
VREGIN_L
B2
LO_REF
B3
AIO0
B4
PIO1
B5
U102
NC
1
NC
2
A
N
A_
D
D
V
1
A
XTAL_OUT
A2
XTAL_IN
A3
C115
R116
L118
VBT_2.6V
L115
C147
TP102
C121
VBT_1.5V
C127
3
5 BAL
BAL
7
G
4
6
G
G
8
1
C
N
C
N
2
UNBAL
F100
C122
C126
VBT_2.6V
TP103
VBT_1.5V
L124
C148
C118
VBT_2.6V
C117
BB_PCM_DOUT
BB_PCM_DIN
BB_PCM_CLK
BB_PCM_SYNC
BT_UART1_RXD
BT_UART1_TXD
0
0
1
T
N
A
2
2
1
C
6
2
1
C
0
0
1
F
G302
5
1
1L
L118
4
2
1
L
D
A
P
_
K
P
S