Sim Part - Samsung SGH-C260 Service Manual

Fl o w Chart of Troubl e shooti n g

3-1-3. Sim Part

"Insert SIM" is displayed on the LCD
No
The voltage is 2.8V
1
Check the UCD107
at the pin#1 of SIM103
Yes
No
Is there any signal pin
2
Check the UCP107 & UCD200
#2,3 of SIM103?
1
Yes
Check the SIM Card
END
2
SIM103
VSIM
SIM_RST
SIM_CLK SIM_IO
C138 C139 C140 C141 C142
3-7