Audio Troubleshooting - LG -E960 Service Manual

4.10 Audio troubleshooting

4.10.1 Speaker troubleshooting
Speaker control signals are generated by APQ8064(U21001) and Power is supplied by WCD9310(U5001).).
LGE Internal Use Only
START
Check the Speaker.
And reconnect Ant. Module
Speaker Sound is OK?
No
Change the Ant. Module.
Is Speaker Sound OK?
No
Check the Low FPCB
Is Speaker Sound OK?
No
Change the WCD9310(U5001)
Is Speaker Sound OK?
No
Change The main PCB
Yes
END
Yes
END
Yes
END
Yes
END
- 124 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Only for training and service purposes