LG D722K Service Manual page 112

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3.12.2 Receiver troubleshooting
Receiver path as below :
MSM8926-2 -> WCD9302 EAROP/ EAROM -> Receiver
START
Run Voice Recording application.
Main Mic. Works well?
Refer to 3.9.5 Main MIC troubleshooting
LGE Internal Use Only
Yes
No
- 112 -
3. TROUBLE SHOOTING
After Change Receiver
Works well?
No
TP1 to TP2/TP3 to TP4
Short test. Is it OK?
No
Rework component
TP1(L6450), TP3(L6451)
Works well?
No
Replace component U6100
End
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Only for training and service purposes
Yes
Yes
Yes

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