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SGH-X660 Flow Chart of Troubleshooting
2-
7
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2-1-3. Sim Part
There is any signal
pin#2,#3,#4 of SIM101
"Insert SIM" is displayed on the LCD
Check the SIM
connector's (SIM101)
connection to SIM Card
check the U102 & UCP201
Resolder or change SIM101
END
No
Yes
Yes
Yes
No
Check the SIM Card
Check the voltage at
SIM101 pin #1
≥
2.8V
Check the U102
No
1
2
3