LG D690 - Audio

3. TROUBLE SHOOTING
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3. 10 Audio
3.10.1 Speaker troubleshooting
Speaker control signals are generated byMT6582(U2100)
and Power is supplied by MT6323(U4100)/TPA2028D(U6101).
START
Check the Speaker.
And reconnect rear case.
Is speaker sound OK?
Change the speaker.
Is speaker sound OK?
Change the TPA2028D(U6101).
Is speaker sound OK?
Change the speaker FPCB.
Is speaker sound OK?
Change the MT6323(U4100).
Is speaker sound OK?
Change the main PCB
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END
END
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No
No
No
No
No
Yes
Yes
Yes
Yes
Yes