LG LG-V909DW - 4.12 Audio troubleshooting

4. TROUBLE SHOOTING
- 89 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

ͽ͸Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΀ΟΝΪ

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?

ͽ͸Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΀ΟΝΪ

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