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Level
3
Repair
8-10
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8-3-3.
GSM
850
RX
Put more lead solder
@
C104,L105,C170,L120,L101
L102, R100,R101,R102,R103
PAM100 CHECK
@
CN100
-65
dBm
?
Put more lead solder CN100,
L120,L101,L102,L131
NO
YES
NO
NO
YES
YES
Check the voltage
PAM100
@
C103
3.0V ?
YES
NO
Put more lead solder
each terminal
END
Does Phone catch
the GSM850 network?
YES
Back to
previous step
Replace Board(PBA)
Phone can't catch GSM850 network
NORMAL CONDITION
catch the channel?
Check the connection
C165, C167, L119
Put more lead solder
each terminal
CONTINUOUS RX ON
RF INPUT
: 190
CH
A
mplitude
:-50
dBm
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