SAMSUNG Proprietary-Contents may change without notice
9. Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
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
C424(VISA) = 2.7V?
Check the PMU related to VINT
No
Yes
Check the Clock at
U404 14pin
(CLK32K)=32KHZ
Resolder OSC400, C419, and C422
No
Yes
C405(+VDD_IO_LOW) &
C406(+VDD_IO_HIGH) = "H"?
Check the related circuit
No
Yes
+VDD_GSM_CORE
= 1.2V?
Resolder L400 and L401
No
Yes
Check the initial operation
Yes
Yes