Audio Trouble - LG -P970 Service Manual

4.12 Audio trouble

4.12.1 Speaker troubleshooting
Speaker control signals are generated by TWL5034 (U40), amplified by WM9093 (IC601), and Power is supplied by
Battery (VBAT).
Change the speaker module
LGE Internal Use Only
START
Reconnect ANT. FPCB.
and check the speaker sound.
Spker sound is OK?
No
Yes
Check the waveform of TP1.
Waveform is OK?
No
Change the ANT. FPCB.
Speaker sounds OK?
No
Check the waveform of TP.
Waveform is OK?
Change the Audio codec IC
Speaker sound OK
END
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4. TROUBLE SHOOTING
Yes
END
Yes
END
Yes
Change the Main PCB
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