![background image](http://html.mh-extra.com/html/samsung/sgh-x630/sgh-x630_service-manual_1191291038.webp)
SAMSUNG Proprietary-Contents may change without notice
10. Flow Chart of Troubleshooting
10-1
This Document can not be used without Samsung's authorization
10-1.Baseband
10-1-1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥
100mA ?
Check the V bat. voltage
Down load again
Voltage
≥
3.3V ?
Check the pins of U102
C119
≥
1.8V ?
Check the Initial operation
END
C116 and C121 = 2.8V?
Charge the Battery
Check the clock generation
circuit (OSC700, U104 pin#4)
Check the clock signal
at pin #1 of OSC700
Freq.=13MHz,Vrms
≥
300mV
Check U102 and C113
Check U102 and C119
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
C113=1.5V?