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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 3.4V
' Power On ' does not work
Change the Battery
END
No
Yes
C406(VINT) = 2.7V? Check the PMU related to VINT
No
Yes
Check the Clock at
R406=32KHz
Resolder OSC400
No
Yes
C424, C425 = "H"?
C424(VDD_IO_HIGH : 2.9V)
C425 (VDD_IO_LOW :1.8V)
Check the related citcuit
No
Yes
C403(VDD_GSM_CORE)
=1.8V?
Check the VDD_GSM_CORE circuit
No
Yes
Check for the clock at C143
=26MHz
No
Yes
Check the initial operation
Yes
Yes
Check the clock generation circuit
(related to U101)