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Level 3 Repair
8-39
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Check the connection
C1004,L131,C186,C184
8-4-4. PCS RX
CONTINUOUS RX ON
RF INPUT : 644CH
Amplitude : -50dBm
PAM100 CHECK
@RFS100
-65dBm ?
Put more lead solder
@RFS100,
L126,L102,C108
Put more lead solder
each terminal
NO
YES
NO
NO
YES
YES
Check the voltage
PAM100 @C107 3.0V ?
YES
NO
Put more lead solder
each terminal
Phone can't catch PCS network
NORMAL CONDITION
catch the channel?
Put more lead solder
@RFS100,L126,C106,L102,C108
END
Does Phone catch
the PCS network?
YES
Back to
previous step
Replace Board(PBA)
NO