Ear-Mic Trouble Shooting; Unable Detection Of Headset Insert - LG -D855 Service Manual

3.13.7 Ear-MIC Trouble Shooting

Ear MIC control signals are generate by MSM8974AC(U2100), WCD9320(U6100)
Case A. Unable detection of headset insert.
LGE Internal Use Only
START
Didn't display headset icon and did play sound via
speaker although headset insert
1. Check the left signal and detection line short
when headset inserted?
Check PCB.
EAR JACK Linle TP17,TP18 headset?
Change Main Board
End
No
No
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3. TROUBLE SHOOTING
Yes
Yes
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