Only For Training And Service Purposes - LG GB220 Service Manual

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.
Receiver will work properly.
LGE Internal Use Only
LGE Internal Use Only
START
NO
Does waveform at
C202 and C204
fluctuate?
YES
Does waveform at
No
L304 and L305
Fluctuate?
Yes
NO
Is receiver connected
Properly?
YES
Change the U101
Replace/Change the U200
Resolder/Change the receiver
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 94 - Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes