LG lg-d821 User Manual

3. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.8.2 Receiver troubleshooting
Receiver control signals are generate by MSM8974(U3000), WCD9320(U10000)
Voice Receiving path as below :
MSM8974 -> WCD9320 -> EAROP / EARON -> Receiver
START
Check the Receiver Sound.
(loop back mode)
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Is receiver sound OK?
Change the WCD9320(U10000)
Is receiver Sound OK?
END
END
END
END
END
Change The main PCB
Change the receiver.
Is receiver Sound OK?
Check the Contact of receiver.
Is receiver Sound OK?
Check Main PCB
inductor(L10001,L10002)
Is receiver Sound OK?

LG lg-d821 Specifications

General

Brand	LG
Model	lg-d821
Category	Cell Phone
Language	English