Only For Training And Service Purposes - LG GT500 Service Manual

4.9.3. Microphone (Voice call, Voice Recorder, Video Recorder)
• Microphone Signal Flow
– MIC is enable by MIC Bias
– CCO, MIC1P, MIC1N signals to AB3100
• Check Points
– Microphone bias
– Audio signal level of the microphone
– Soldering of components
• Signal from the mic
– MIC
– C625,C626 on main board
– AB3100
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Only for training and service purposes

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4. TROUBLE SHOOTING
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