Audio Trouble - LG -P768 Service Manual

4.11 Audio trouble

4.11.1 Speaker troubleshooting
Speaker control signals are generated by OMAP4430 (U501) and Power is supplied byTWL6040(U803).
Check the speaker sound and
reconnect the main ANT module
Is speaker sound OK?
No
Change the main ANT module.
Is speaker sound OK?
No
Change the RF key PCB.
Is speaker sound OK?
No
Change the TWL6040(U803)
Is speaker sound OK?
No
Change the mainboard
LGE Internal Use Only
START
TP1,TP2
TP3,TP4
Yes
Yes
Yes
Yes
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4. TROUBLE SHOOTING
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