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9. Flow Chart of Troubleshooting
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9-1
9-1. Power On
' Power On ' does not work
Yes
Check the current consumption
Yes
Current consumption
>= 100mA
Download again
No
Change the Battery
Check the Battery Voltage
>=3.3V
Yes
No
Check the TP_PSHOLD
is high?
Yes
Check the ON_SW Voltage Level
No
Check the PMIC
output voltage
(C421, C427, C430, C431,
C432, C433)
Check the Pin 3 of
OSC200 Produces clock
signal
No
Check the U400
check the OSC200
Yes
END
Yes
No
Yes
Check the initial operation
Yes