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8-3-14. GSM1800 RX
NORMAL CONDITION
catch the channel?
Check C103 ≤ -65dBm ?
Check L108 ≤ -65dBm ?
Check L104 ≤ -65dBm ?
Check component
soldering status OK at
GSM1800 Rx is OK?
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Yes
Yes
Yes
U104
Yes
Yes
END
Check soldered or change
No
C100, C101, F106, C174,
RFS100, L100, L129, C109
Check soldered or change
No
Check soldered or change
No
F100, L103, C112, L105, L109, L104
No
Check soldered or change U104
No
Check soldered or change UCP300
8-33
Level 3 Repair
CONTINUOUS RX ON
RF INPUT : 698CH
AMP : -50dBm
U100, L102, L108
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