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Flow Chart of Troubleshooting
10-6
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L300
R306
5
1
3
C
VMSME_1.8V
VRFRX2_2.7V
R303
9
1
3
C
C308
V6.2_PMSMVV58.2_OXCTV
3
1
2
3
0
3
C
D300
TP_CBL_PWR_N
C309
4
1
3
C
5
0
3
C
C317
C
2
1
3
C
3
1
3
C
R307
V
3
.
6
VUSB_5V
8
1
3
C
1
0
3
C
0
2
3
C
1
2
3
C
VMSMC_1.2V
OSC300
R304
L3
MPP3|VIB_DRV_N
L4
KPD_PWR_N
5
L
C
M
S
M
_
D
D
V
L6
VREG_S3
7
L
3
2
S
_
D
D
V
L8
VREG_S2
L9
VREG_MMC
K6
VSW_S3
K7
VSW_S2
K8
VREG_MSME
K9
SLEEP_CLK
L1
MPP4|LCD_DRV_N
L10
VREG_RUIM
L11
XTAL_IN
L2
KPD_DRV_N
J2
USB_D_P
K1
HSET_BIAS
0
1
K
M
I
U
R
_
D
D
V
K11
XTAL_OUT
K2
MPP7|CBLPWR_N
K3
AMUX_OUT
K4
VREG_MSMC
K5
VSW_MSMC
H4
USB_SE0
H5
MPP12|RUIM_IO
H6
MPP10|RUIM_CLK
H7
MPP6|RUIM_RST
H8
OPT_2
J1
USB_D_M
J10
VCOIN
J11
VREG_MSMP
5
G
D
N
G
6
G
D
N
G
7
G
D
N
G
G8
SBDT|SSBI
H1
USB_VBUS
H10
TCXO_OUT_1
1
1
H
M
S
M
_
D
D
V
H2
USB_ID
7
F
D
N
G
F8
SBCK
1
G
V
5
_
G
E
R
V
G10
PON_RESET_N
G11
VREG_MSMA
G2
VREG_USB
G4
USB_DAT
7
E
D
N
G
E8
SBST
1
F
V
5
_
W
S
V
F10
PS_HOLD
F11
TCXO_OUT_RF
F2
USB_OVP_G
F4
USB_OE_N
5
F
D
N
G
6
F
D
N
G
D8
TCXO_EN_1
1
E
T
A
B
V
E10
REF_GND
E11
TCXO_IN
E2
BAT_FET_N
E4
TCXO_EN_2
5
E
D
N
G
6
E
D
N
G
D1
ISNS_M
D10
REF_ISET
1
1
D
C
N
D
D2
ISNS_P
D4
OPT_1
D5
MPP11|RUIM_M_IO
D6
MPP9|RUIM_M_CLK
D7
MPP5|RUIM_M_RST
B6
SPKR_IN_P
B7
MPP2|AMUX_IN2
B8
VREG_RFUBM
9
B
F
R
_
D
D
V
C1
VCHG
C10
MSM_INT_N
C11
REF_BYP
C2
CHG_CTL_N
B1
VREG_GP3
B10
TCXO_OUT_2
B11
VREG_WLAN
2
B
N
I
A
M
_
D
D
V
3
B
P
G
_
D
D
V
B4
MPP8|REF_OUT
B5
SPKR_IN_M
1
1
A
N
A
L
W
_
D
D
V
A2
VREG_GP2
A3
VREG_GP1
4
A
R
K
P
S
_
D
D
V
A5
SPKR_OUT_M
A6
SPKR_OUT_P
A7
MPP1|AMUX_IN1
A8
VREG_RFTX
A9
VREG_RFRX1
U301
1
C
N
2
C
N
A1
VREG_TCXO
A10
VREG_RFRX2
VMSMA_2.6V
ON/_OFF
3
OUT
2
4
GND
IN
1
5
IN
IN
6
7
IN
IN
8
U302
C324
VRFRX1_2.1V
1
1
3
C
L302
6
0
3
C
6
1
3
C
VRFRX2_2.7V
V_DC
0
0
3
C
R302
4
0
3
C
2
2
3
C
3
2
3
C
2
0
3
C
1
2
0
0
3
T
A
B
R312
VUSIM_3.0V
L301
R309
TCXO_EN
TCXO_OUT
REF_OUT
PS_HOLD_F
PON_RST_PMIC_N
PM_INT_N
AMUX_OUT
TCXO
PM_SIM_RST
PM_SIM_CLK
PM_SIM_IO
USB_OE_MSM
USB_DAT_MSM
USB_SEO_MSM
PHONE_D+
PHONE_D-
PHONE_DEBUG_ON
PS_HOLD_F
nPHONE_ON
SIM_CLK
SIM_IO
SIM_RST
SBDT
SLEEP_CLK
Place near the TCXO
C1109
2
GND
3
OUT
1
VC
VCC
4
OSC102
6
0
1
1
C
R135
C1104
C1105
7
0
1
1
C
8
0
1
1
C
VTCXO_2.85V
TRK_LO_ADJ
RTR6285_TCXO
TCXO