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Flow Chart of Troubleshooting
10-2-5. PCS RX- MASTER
Continuous Rx on, Rx input=-60dBm, Channel=698
NORMAL CONDITION
catch the channel?
YES
RFS100 CHECK
Pin#2 ≥ -65dBm ?
YES
F100 CHECK
Pin#11 ≥ -65dBm ?
YES
F100 CHECK
Pin# 7 , # 8 ≥ -65dBm ?
YES
U101 CHECK
Pin#A6, #A7 ≥ -65dBm ?
YES
OSC100 CHECK
Pin#1, #3 : 26MHz
YES
C129,C103
2.8V ?
YES
GSM1900 Receiver is
OK?
END
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CHECK
NO
ANT100, ANT101, R102, L103
L104, RFS100
contact ?
NO
RFS100,
resolder or change
NO
C101
resolder or change
NO
F100
resolder or change
NO
C118,L108,C122
resolder or change
NO
OSC100
resolder or change
NO
U101
resolder or change
NO
PCS RX path components
resolder or change
10-20
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