LG KG800 - Page 94

4. TROUBLESHOOTING
- 95 -
START
NO
Replace U100
NO
YES
Microphone will work
properly.
SETTING : After initialize Agilent 8960, Test EGSM, DCS mode
YES
Voltage across C118 at MAIN PCB
= DC 2.5V ?
Check the signal
Level at each side
of MIC.
Is it a few tens
mV AC?
Check the soldering of
R205, R206 at Slide PCB
Voltage VMIC of U100
= DC 2.5V?
NO
Replace microphone
YES
NO
Resolder component
Checking Flow