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2. SGH-i300 Flow Chart of Troubleshooting
2-1
This Document can not be used without Samsung's authorization
2-1. Power On
'Power on' does not work
Yes
Yes
Press nPower key or
hardware Reset
No
No
Charge the Battery
No
Yes
Charge the Battery
Check the
Pin 1 of U305 is High
Check the
Pin 1 of U323 or
U302 is High
Check the
current consumption
more than 20mA
No
Check the
Vbat more than 3.6V
Yes
Charge the Battery
No
Check the
Pin 8 of U 306 is High
Check the
Pin 4 of U301 is
more than 3.3V
Yes
Check the
Pin 5 of U307 is
more than 1.0V
Yes
No
Check the
Pin 1 of U 307 is High
Check the
Clock signal at
OSC101 and OSC102
No
Retry Hardware Reset
Yes
Yes
Check the initial operation
Yes
END