LGE Internal Use Only
3. TROUBLE SHOOTING
3.7 Power
Checking Power signal(Battery connector, PMU, Clock)
Power on voltage check list
Power domain Configurable Voltage Signal Name Measurment Location TP
VRTC 2.8 V VRTC C417 TP1
VPROC 0.75 ~ 1.3V (25mV/step) VPROC_PMU L401 TP2
VIO18 1.8 V VIO18 _PMU C416 TP3
VIO28 2.8 V VIO28_PMU C424 TP4
VM 1.2 V DVDD12_EMI C605 TP5
VCORE 1.15 V VCORE__PMU L403 TP6
VUSB 3.3V VUSB33_PMU C157 TP7
VTCXO 2.8V VTCXO_0 C1304 TP8
VMC 3V VMC_PMU C153 TP9
VEMC_3V3 3 V VEMC_3V3 C612 TP10
Check Output Voltage of U401 (PMU)
TP1
TP2
TP3
TP8
TP7
TP6
TP9
TP5
TP10
TP4
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rved. Only training and service purposes
Oscillate frequency measurement
Signal name
Description Frequency MHz
Measurment Location Check Clock Result
X401 32.768 KHz crystal 32.74kHz C419
X1201 26MHz Crystal(WCN) 26.03MHz R1207
X1301 26MHz Crystal(Transceiver) 26.1MHz C1309
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