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Flow Chart of Troubleshooting and Circuit Diagrams
3-3
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R304
C313
C332
VCCA_2.9V
C316
C304
VCCB_2.9V
R301
R300
VRTC_1.5V
C312
C333
C314
C321
VRTC
K12
VSIM
G11
VLDO_1
J12
VLDO_2
A13
VLDO_3
B12
VLDO_4
B10
VLDO_5
A14
VLDO_6
C12
VLDO_7
A10
VREF
H11
E14
VEXT
F15
VIB_DRV
9
L
N
E_
G
N
R_
BI
V
A12
VL4S_A
B11
VL4S_B
D10
VL5S_A
VL5S_B C9
VACC
E13
VBAT
J13
VDD12
C11
VDD34
0
1
C
5
D
D
V
3
1
B
76
D
D
V
K14
SIM_CLK
J11
SIM_IO
K11
SIM_RST
N9
UP_CLK
P10
UP_IO
R10
UP_RST
F14
H10
RTC_ALMN
L8
SCLK_PSC
SDI_PSC M7
N7
SDO_PSC
9
M
P
E
E
K_
R
W
P
F13
RING_DRV
01
N
E
D
O
M
01
L
Q
R
T
NI
G13
LED1_DRV
G12
LED2_DRV
E11
CH_BDRV
F12
CH_ISEN
D14
CH_RES
CREF E9
CSN_PSC K8
E10
ADC_AUX1
D15
ADC_AUX2
VCCD_2.9V
G
E
N
1
2
S
O
P
BAT300
VBAT
C318
C315
VRF_2.9V
VCCD_1.8V_A
22nF
C334
VCCB_2.9V
6.3V
VBAT
R302
C317
C319
U301
SIM_RST
SIM_IO
VSIM
SIM_CLK
ICHRG
UP_SDO
UP_SCLK
UP_CS
SIMDATA
SIMRST
RTCALARM
UP_SDI
SIMCLK