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CHECKING FLOW
Voltage MICBIAS of U1 01
Check t he Sold er
condition of R 214 and
Check the sig nal lev el
Is it about 1. 2~1.5V?
Microphone w ill work
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Only for training and service purposes
START
No
= 2.0V?
Yes
No
C222,C224
Yes
No
at MICP.
Yes
properly.
4. TROUBLE SHOOTING
Replace U101 or Change the board
Re-solder or replace the Component
Re-solder or replace the mi crophone
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LGE Internal Use Only
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