LG D686 Service Manual page 95

Case B. No Sound from Headset
LGE Internal Use Only
START
Didn't play sound via headset
although headset insert
Change Ear Jack Connector.
Sound play via headset?
No
Check TPA6136(U503) and peripheral
circuits Works well?
No
Check MT6577(U201). Works well?
No
Change Main Board
END
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3. TROUBLE SHOOTING
Yes
Yes
Yes
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