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Level 3 Repair
8-13
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Check the connection
C154, C155, L115
8-3-6. PCS RX
CONTINUOUS RX ON
RF INPUT : 644CH
Amplitude : -50dBm
PAM100 CHECK
@CN100
-65dBm ?
Put more lead solder
@CN100,L120,L101,L102
Put more lead solder
each terminal
NO
YES
NO
NO
YES
YES
Check the voltage
PAM100 @C103 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
@C104,L105,C170,L120,L101
L102, R100,R101,R102,R103
END
Does Phone catch
the PCS network?
YES
Back to
previous step
Replace Board(PBA)
NO