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9. Flow Chart of Troubleshooting
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9-1
9-1. Power On
Check the Battery Voltage
is more than 3.7V
' Power On ' does not work
Change the Battery
END
No
Yes
PMU_VIO = 2.8V?
Check the Main Chip related to
VGPIO_2.8V
No
Yes
Check the Clock at
U206 L16pin (CLK32K)=32KHZ
Check the Main Chip
No
Yes
R205(+VGPIO) = "H"?
Check the related circuit
No
Yes
+VCORE_1.25V
= 1.25V?
Resolder C202 and L202
No
Yes
Check the initial operation
Yes
Yes