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Level 3 Repair
8-9
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8-3-3. GSM850 RX
Put more lead solder
@L105,C114,C189,L111,
L110,C113,C115,L107
PAM100 CHECK
@RFS100
≥
-65dBm ?
Put more lead solder RFS100,
L110,C113,C115,L107
NO
YES
NO
NO
YES
YES
Check the voltage
PAM100 @ C116
≥
3.0V ?
YES
NO
Put more lead solder
C119, L113,
C118,C120,L112
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
GSM850 RX LINE
Put more lead solder
each terminal
CONTINUOUS RX ON
RF INPUT : 190CH
Amplitude : -50dBm
Содержание GT-B7510
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