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2.RF
3-2-1. EGSM Receiver
Rx ON
RF Input : 62Ch
Cell Pwr : -50dBm
Normal condition
Catch the channel
RFSW100(RF Switch)
Pin#1 ≥ -60dBm ?
FEM100
Pin#12,13 ≥ -60dBm ?
U100
Pin#37,38 ≥ -60dBm ?
Check the UCP300
END
YES
Check Intenna Soldering
NO
ANTCON100, ANTCON101
YES
NO
Resolder or change RFSW100
YES
NO
YES
NO
Check or resolder L104, L106,
YES
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Flow Chart of Troubleshooting and Circuit Diagrams
YES
FEM100
Pin#9,10 = LOW &
Pin#11 = HIGH ?
NO
L122, L123 or U100
3-36
Resolder or change FEM100
Check FEM100 control path
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