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Level 3 Repair
8-5
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8-3. Troubleshooting
8-3-1. 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
UCP200 L19pin
(XTAL_32K)=32KHZ
Check the Main Chip
No
Yes
C211(+VGPIO_2.8V) = "H"?
Check the related circuit
No
Yes
+VCORE_1.25V
= 1.25V?
Resolder C202, C208 and L201
No
Yes
Check the initial operation
Yes
Yes