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Flow Chart of Troubleshooting
9-12
VBAT
C619
VMSMP_2.6V
C606
R603
TP601
R602
VUSB_OUT_5.0V
VMSMP_2.6V
C616
VUSB_5.0V
R607
R606
TP602
TP603
D4
VIDEO
D5
ID
E1
RXD
E2
TXD
E3
BOOT
E4
JIG
5
E
D
N
G
C1
D-
C2
I2C_SCL
C3
VID_L
C4
SPKR_R
C5
DP
1
D
D
D
V
D2
IDBP
D3
VID_R
A3
ISET
A4
OUT
5
A
S
U
B
V
B1
D+
B2
I2C_SDA
B3
SPKR_L
B4
MIC
B5
DM
U603
1
C
N
2
C
N
A1
INTB
2
A
OI
D
D
V
USB_I2C_SCL
USB_I2C_SDA
USB_SW_INT
TA_USB_SEL
JIG_ON
JIG_ON_JTAG
BOOT_SW
USB_ID
UART3_TXD
UART3_RXD
USB_DP_MODEM
USB_DM_MODEM
USB_DP_FS
USB_DM_FS
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
C307
C308
C309
0
1
3
C
C323
C324
C328
C330
C331
C332
C350
C351
C352
C353
C359
C509
0
1
5
C
C515
6
1
5
C
C519
1
2
5
C
3
2
5
C
C524
C529
C530
1
3
5
C
2
3
5
C
3
3
5
C
C606
C607
8
0
6
C
9
0
6
C
C610
C612
C615
6
1
6
C
C619
4
3
7
C
0
0
6
D
0
0
6
C
FI
0
0
5
L
1
0
5
L
L50 2
L503
4
0
5
L
5
0
5
L
4
0
3
R
R314
R316
R317
1
0
4
R
2
0
4
R
R438
R500
1
0
5
R
R502
R504
R505
R506
R509
R510
R516
R524
5
2
5
R
R536
2
0
6
R
3
0
6
R
R606
R607
2
1
6
R
3
1
6
R
6
1
6
R
2
2
6
R
4
2
6
R
R625
R626
R627
9
3
6
R
R642
R643
R704
R747
R748
9
4
7
R
R750
1
5
7
R
R754
R755
K
_
E
DI
L
S
TA502
TA503
1
0
6
A
T
TP523
TP524
TP525
TP526
TP527
TP528
TP529
TP530
TP601
TP602
TP603
0
0
3
U
X
8
L
4
7
V
S
7
C
N
U50
0
S5M
00
65
U501
FSA2271TUMX
2
0
6
U
T
C
T.
P
4
5
6
1
P
M
AL
C
R
U60
3
SC
CS
P90
077
9A
U604
XC6209B502DR
U6
05
FS
US
B4
2U
MX
7
0
6
U
0
0
0
1
A
SI
U60
9
KX
SD
9-1
026
2
1
6
U
G
2
R
N
M
3
2
1
5
S
AL
N
U7
04
TC
75S
56F
E