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3.12.5 Ear-MIC troubleshooting
3.12.5.1 Headset Sound trouble
Ear-Mic. path as below :
MSM8926-2 -> WCD9302 HPH_L / HPH_R -> Headset
START
Headphone icon display on Upper
right LCD ?
Yes
Replace Headset Jack (J6600)
Check Main Board
TP1(MIC)
When headset inserted.
Replace component U6600
END
LGE Internal Use Only
Yes
No
No
Yes
TP2(HPH_L), TP3(HPH_R), TP4(HPH_
No
Replace component U6100
Replace component U2100
Yes
Check Main Board
REF)
No
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3. TROUBLE SHOOTING
Check Main Board
TP5(-NCP_VNEG), TP6(NPC_C1P)
No
Replace component U6100
Only for training and service purposes
Yes
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