Table of Contents
Advertisement
11. Flow Chart of Troubleshooting
11-1.Baseband
11-1-1. Power ON
'Power On' does not work
Check the current consumption
Current consumption
>= 100mA
Check the Vbat Voltage
Voltage >=3.3V
Check the pin of U101
Pin#J12 >= 2.8V
Pin#A13 and
pin#A14>=2.8V
③
Check the clock signal at C414
Freq = 26MHz
Vrms >=300mV
Vpp ≒ 900mV
Check the initial operation
END
This Document can not be used without Samsung's authorization
Yes
No
Yes
No
Yes
①
No
Yes
No
Yes
No
Yes
SAMSUNG Proprietary-Contents may change without notice
Download again
Charge the Battery
Check U101 and C115
pin#C12 =
1.8V
Yes
④
Check the clock generation circuit
(related to 3pin of TCX400, C407, R404)
11-1
②
No
Check U101, U103
Advertisement
Table of Contents
