LG-ID3100
LGE
LG Electronics Inc.
SETTING : After initialize 5515C, Test US Cellular
Checking Flow
START
Voltage at TP1 = 1.2V?
(MIC BIAS Voltage Check)
Check the soldering
Of R326
Re-solder R326
Replace U201(QSC6010)
Check the signal level
at TP2 of U302(MIC)
Is It a few tens mV(AC)?
Replace the U302(MIC)
Check the soldering of
TP3(C321)
Re-solder TP3(C321)
MIC will work properly
Yes
Yes
Yes
No
No
No
No
Yes
Does MIC work Properly?
Replace U201(QSC6010)
No
Yes
35/57
LGE Internal Use Only