Samsung GT-C3520 - SIM Card Working

SAMSUNG Proprietary-Contents may change without notice
Level
3
Repair
8-20
This Document can not be used without Samsung's authorization
8-3-9.
SIM Card Working
SIM301
Break down?
NO
Change SIM301
YES
No
Yes
Check the voltage
C328
>3.0V
NG
Change Main PBA
Insert
&
Operate
SIM card
Check SIM301,C328