LG -A155 Service Manual page 79

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4. TROUBLE SHOOTING
CHECKING FLOW
SETTING : After initialize Agilent 8960, Test EGSM900, DCS mode ( or GSM850, PCS mode )
Set the property of audio as PRBS or continuous wave. Set the receiving volume of mobile as Max.
LGE Internal Use Only
START
Does waveform at
TP1 fluctuate?
YES
Does waveform at
TP2 Fluctuate?
YES
Is receiver connected
Properly?
YES
Receiver will
work properly.
4. TROUBLE SHOOTING
NO
Resoldering/
Change the CN200 or CN500
No
Replace/Change the U102
NO
Change the receiver
87/140
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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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