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4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
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4.12 Audio troubleshooting
4.12.1 Speaker troubleshooting
Speaker control signals are generated by WM8994(U800)
Speaker is the intergrated in two kinds of Main/Sub spk module
Start
Check the Speaker sound, and
Reconnect the Main/SUB SPK Module
Speaker sound is ok?
Change the
Main/SUB SPK Module if you confirm
manual soldering.
sound is ok?
Check the
waverform of
TP1, TP2, TP3
OK?
Change the Audio
Codec ic
Speaker Sound is OK?
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ͽͶ͑ ͺΟΥΖΣΟΒΝ͑ ΆΤΖ͑ ΟΝΪ͑
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4.12 Audio troubleshooting
4.12.1 Speaker troubleshooting
Speaker control signals are generated by WM8994(U800)
Speaker is the intergrated in two kinds of Main/Sub spk module
END
END
END
Change the SPK
Lower FPCB