
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
Voltage >=3.3V
Download again
Charge the Battery
Pin#J12 >= 2.8V
Check U300 and C313
Pin#A13 and
pin#A14 =2.8V
Check U300 and C314
Freq = 26MHz
Vpp >=400mV
Vpp
≒
600mV
Check the clock generation circuit
(related to OSC101)
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 U300
Check the clock signal at pin#21 of U100
Current consumption
>= 100mA
Check the clock signal at pin#5,#6 of U101
Freq = 13MHz
Yes
Check U101
No
Содержание SGH-B300
Страница 56: ...www s manuals com ...