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Flow Chart of Troubleshooting
9-13. GSM/DPCS Receiver
CONTINUOUS RX on
RF input : EACH BAND CENTER
RX ON
CH
Cell Power : -50 dBm
Cell power : -50dBm
Yes
No
C104 ≥ -65dBm
Resolder RFS100
Yes
No
Check FEM100 POWER
C101 = 2.8V
(C416,C101.C107)
Yes
No
Check R102,3,4,5
ResolderR102,3,4,5
Well?
or Change R102,3,4,5
Yes
No
Check FEM100 ok?
Change FEM100
Yes
Check U200
END
9-31
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