LG -L25 Service Manual page 78

3. TROUBLE SHOOTING
3. 22. 2 Receiver Trouble Shooting
Receiver control signals are generate by MSM8926(U2100), WCD9302(U6100)
Voice Receiver path as below :
WCD9302 -> EARO_P/EARO_N -> Receiver
Start
Check Receiver Module
Check Receiver Contact TP1
YES
NO
Check L6912 , L6913
Check TP2
NO
YES
Check U6100 (WCD9302)
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