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4.13 Power on Trouble – LTE Booting Trouble
TP1
1V2_CORE
C509
C510
C511
C512
220u
100u
47u
10u
1V8_MEM
C518
TP2
10u
PERST_N
RESET_OUT_N
2V6_IO
I2C_SDA
I2C_SCL
LTE_RESET_N
SYS_PWR
PERST_N
SYS_PWR
LGE Internal Use Only
SYS_PWR
4.7u
C508
D5
R510
0
E4
TP1
C513
1u
L503
E5
100n
LQM2HPN1R0MG0
F5
C514
4.7u
C5
R514
0
B4
TP2
C519
1u
L504
B5
100n
LQM2HPN1R0MG0
A5
R518
0
B3
R532
0
R530
10K
C4
D4
C3
R521
10K
E3
R529
0
C2
R523
10K
D2
R525
10K
E2
F4
A4
C522
C523
2.2u
2.2u
1V5_DCDC
4
3
TP6
C537
1u
SYS_PWR
RF_HKP_EN
TP5
TP5
4. TROUBLE SHOOTING
C505
C506
C507
2.2u
2.2u
2.2u
F1
VINB1
LDO1
FB1
E1
SW1
LDO2
GNDB1
VINB2
C1
FB2
LDO3
SW2
B2
U501
GNDB2
LDO3_EN
LP8725-B
B2_EN_PS_HOLD
A1
LDO4
SDA
SCL
B1
RESET_N
LDO5
EN_PWR_ON
F3
DVS
LILO1
DEFSEL
A3
CONFIG
LILO2
VIN_LILO1
VIN_LILO2
1V3_BBPLL
U504
RP109L131D
R533
1
VDD
VOUT
2
TP6
0
CE
GND
U503
RP104K281D-TR-F
R526
4
1
0
VDD
VOUT
3
2
TP5
CE_NC
GND
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4. TROUBLE SHOOTING
TP3
TP3
R509
0
R512
0
TP4
R516
0
TP4
R519
DNI
R520
DNI
R522
0
R524
0
C524
C525
C526
C527
C528
C529
C530
1u
1u
1u
1u
1u
1u
C538
1u
2V8_RF
C532
1u
Only for training and service purposes
2V6_IO
2V8_LNA
2V8_TCXO
TCXO_ON
1V2_RX_PLL
1V2_TX_PLL
2V5_RF
3V3_USB
1u
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Troubleshooting
