User Guide

SGH-E620 Flow Chart of Troubleshooting
2-7
2-3. Sim Part
* Test with Sim
Check the pin 1 of
Phone can't access SIM card
Check the SIM
connector's (CN100)
connection to SIM
card
Check the circuit related to U100
Resolder or change CN100
END
No
Yes
Yes
Yes
No
Check the circuit
around CN100 input
circuitry
Check the related circuit of CN100
Yes
No
Check the circuit
around U200 output
and voltage supply
circuitty
Check the related circuit of U200 and
U100
Yes
No
1
2
3
4
1
2 3
4
4