Headset Microphone - LG -E615 Service Manual

4.17.5 Headset microphone

MIC Signal: 3.5 pi Headset (CN10000) -> R6014 (TP4) MIC of MAX14579E & C2011 (TP4) MIC2P of MSM7225A
MIC Bias : VREG_MSME_1.8V -> R6013 (TP1) DET -> R6015DET_IN -> Headset MIC \
HS Detect IC Bias: VREG_P3_2.85V -> C6035 (TP2)
Make a some sound or voice to MIC
Some sound signal appears at
Some sound signal appears at
LGE Internal Use Only
START
Make a call
TP1 is about 1.8V?
Yes
TP4?
Yes
TP3?
Work Well?
END
No
TP2 is about 2.85V?
No
Change the U6001 (MAX14579E) or
Change the Main PCB
No
Change the Headset or Re-solder/
Change the CN1000 or
Change the Main PDB
No
Change the U200 (MSM7225A) or
Change the Main PCB
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4. TROUBLE SHOOTING
Only for training and service purposes