LG LG-K430DSF - Page 68

68
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3. TROUBLE SHOOTING
Yes
Circuit Diagram
Jack detect
Voltage Level Check at R6201
- 1.8V(before Jack)
- low(after Jack)
3.10.4 Audio_Ear MIC Jack
Disable detecting headset insert or No sound from Earphone, Check the Ear Mic and MT6328
Image
Checking Flow
Didn’t display headset icon and Didn’t play sound
via headset although headset insert
Change Main Board
Start
Change Ear Jack
Connector.
Sound play via
headset?
Yes
No
No
Check the left signal and
detection line short
when headset inserted?
Yes, but still not works
Change
MT6328(U4100).
Mic works well?
No
Works well,
Yes
End