Flow Chart of Troubleshooting
10-
3
VCCD_1.8V
VFB1
10
VFB2
VIN
3
VOUT
2
TA300
11
GND
5 GND
9
OUT2
8
RUN1
RUN2 6
4 SW1
7
SW2
1
L302
U304
D301
HP_CORE_1.6V
VBAT
C330
C332
C335
L303
R330
C327
C336
VLDO1_1.5V
VRTC H11
VSIM K12
VL5S_A D10
C9
VL5S_B
VLDO_1 G11
VLDO_2 J12
VLDO_3 A13
VLDO_4 B12
VLDO_5 B10
VLDO_6 A14
VLDO_7 C12
VEXT E14
VIB_DRV F15
VL4S_A A12
VL4S_B B11
VACC F14
VBAT E13
SDO_PSC N7
RING_DRV F13
SCLK_PSC L8
M7
SDI_PSC
LED1_DRV G13
LED2_DRV G12
K8
CSN_PSC
VCCA_2.9V
C312
C313
VCCB_2.9V
R305
C310
VRF_2.9V
C307
C314
VCCD_2.9V
1
S
O
P
C308
BAT300
2
G
E
N
VLDO1_1.5V
C309
VBAT
C315
VCCD_1.8V_PSC
VCCB_2.9V
C311
VSIM
GSM_TX_EN
DCS_TX_EN
UP_SCLK
UP_SDI
UP_SDO
UP_CS
KEY_BL1