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2. SGH-i700 Flow Chart of Troubleshooting
2-1
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1.Power On
Check the pin
4ofU308ismorethan
3.3V
Check to the path from pin 1 of
CN301 to pin 1, 2 of U307
Check the pin
5ofU311ismorethan
1.0V
Check the pin 1 of U311 is High
Checktheclocksignal
at OSC101 and OSC102
Retry Hardware Reset
Check the initial operation
END
Yes
Yes
Yes
Yes
No
No
No
Check the current
consumption more than
20mA
'POWER ON' does not work
Check the pin 1 of
U316 or U317 is High
Press nPower Key or Hardware
Reset
Charge the Battery
No
Yes
No
Charge the Battery
Yes
Yes
No
Check the VBat more
than 3.6V
Yes
Check the pin 1 of
U323 is High
No
Charge the Battery