SAMSUNG Proprietary-Contents may change without notice
2. SGH-X140 Flow Chart of Troubleshooting
2-
1
This Document can not be used without Samsung's authorization
2-1.Baseband
2-1-1. Power ON
'Power On' does not work
Voltage >=3.3V
Download again
Charge the Battery
Pin#J12 >= 2.8V
Check U101 and C112
Pin#A13 and
pin#A14 =2.8V
Check U101 and C115
Freq = 13MHz
Vrms >=300mV
Vpp
≒
900mV
Check the clock generation circuit
(related to OSC401)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#G11 =
1.8V
No
Yes
Check the current consumption
Check the Vbat Voltage
Check the pin of U101
Check the clock signal at pin#27 of U404
Current consumption
>= 100mA