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Flow Chart of Troubleshooting
9-18
9-11. GSM900 Receiver
C113
≥ -65dBm
Resolder RFS100
END
No
RX ON
RF input : CH center freq
Amp : -50dBm
U100 pin
11,12,13,14
≥ 500mV
L106
≥ -70dBm
Resolder U102
Resolder U100
or Check pins related to U100
Yes
Yes
Yes
Yes
No
No
Check U100