
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-6
This Document can not be used without Samsung's authorization
3-1-3. Sim Part
Check the voltage at
pin#1 of SIM100 >=
2.8V ?
"Insert SIM is displayed on the LCD
Check the SIM
connector's (SIM100)
connection to SIM card
Check the
U100
Resolder or change
SIM100
END
No
Yes
Yes
Yes
Yes
No
No
Is there any signals
pin#2,#3,#4 of ?
Check the
UCP201
Check the SIM Card
①
②
③
8
31
C
7
31
C
6
31
C
4 4
5
5
6 6
G
7
8
G
G
9
10
G
SIM102
1
1
2
2
3
3
C139
5
31
C