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3. TROUBLE SHOOTING
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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
Replace component U6600
Replace component U6100
Replace component U6100
Replace component U2100
Replace Headset Jack (J6600)
Check Main Board
TP1(MIC)
When headset inserted.
Check Main Board
TP2(HPH_L), TP3(HPH_R), TP4(HPH_
REF)
Check Main Board
TP5(-NCP_VNEG), TP6(NPC_C1P)
Headphone icon display on Upper
right LCD ?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
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