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5. SGH-E316 Flow Chart of Troubleshooting
5-
1
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1.Baseband
1. Power ON
Current consumption
>=100mA
Power On does not work
Voltage >= 3.3V
Download again
Charge the Battery
pin#J12 >= 2.8V
Check U102 and C126
pin#A13 and pin#A14
= 2.8V
Check U102 and C127
Freq = 13MHz ,
Vrms ≥ 300mV and
Vpp
뵃
900mVpp
Check the clock generation circuit
(related to OSC402)
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#G11 = 1.8V
No
Yes
Check the V bat. Voltage
Check the pin of U102
Check the clock signal at pin#28 of U403
Check the initial operation
Check the current consumption