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SGH-S400i Flow Chart of Troubleshooting
2-
31
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2-2.RF
2-2-1. EGSM RX
Continuous RX ON
RF Input : 37 CH
AMP : -60dBm
NORMAL CONDITION
Catch the channel ?
Yes
No
Check the RFS100
Pin #3 ≥ -65dBm ?
Check the DUF100
Pin #6 ≥ -65dBm ?
Check the UPL101
Pin #42 ≥ -65dBm ?
Check antenna contack
Resolder or Change
RFS100
Check the C101 and L107
END
No
No
Yes
Yes
Yes
Check the L105
Check the DUF100
Pin #15 ≥ -65dBm ?
Resolder or change
DUF100
No
Yes
No