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Level 3 Repair
8-4-5. WCDMA Band 8 RX
Phone can't catch WCDMA900 network
NORMAL CONDITION
@RFS100
Check the connection
PAM100 @C107 3.0V ?
catch the channel?
YES
PAM100 CHECK
-65dBm ?
YES
C132,C134,L109
YES
Check the voltage
YES
Replace Board(PBA)
previous step
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NO
Put more lead solder
@RFS100,L126,C106,L102
C108
NO
Put more lead solder
@RFS100,L126,L102,C108
NO
Put more lead solder
each terminal
NO
Put more lead solder
each terminal
NO
Back to
8-40
CONTINUOUS RX ON
RF INPUT : 10700CH
Amplitude : -50dBm
Does Phone catch
WCDMA900 network?
YES
END
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