3. TROUBLE SHOOTING
- 153 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.13.3 Receiver Trouble Shooting
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.check
receiver contact.
End
Change Receiver.
Can you hear a sound?
2. Check Main PCB inductor (L7000 /
L7002). Sound OK?
1. Receiver pin is OK?
Change Main Board
Hear the sound to the Receiver?
No
No
Yes
Yes
Yes
Yes
No
No
Making the receiver pin contact
to PCB