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9-
1
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9. Chart of Troubleshooting
9-1. Baseband
9-1-1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥
100mA ?
Down load again
Voltage
≥
3.3V ?
R509
≥
2.5V ?
Check the Clock
at OSC500=32kHz
Check the Initial operation
END
Charge the Battery
Check the PMIC related
to PS_HOLD
NO
NO
NO
YES
YES
YES
Resolder OSC 500
NO
YES
Check the PMIC(U501)
NO
Check U501
C510(MSMP_2.6V)=2.6V?
C516(MSMC_1.375)=1.375V?
C511(MSMA_2.6V)=2.6V?
C514(MSME_1.8V)=1.8V?
YES
Check the clock at
TCX800=19.2MHz
YES
check the clock generation
circuit(TCX800)
NO