Audio Trouble - LG KF700 Service Manual

4. TROUBLE SHOOTING

4.7 Audio trouble

4.7.1 Receiver path
Voice Receiver path as below:
MSM6280 Ear1ON/Ear1OP
LCD FPCB connector)
→
PAD) Receiver
LGE Internal Use Only
→
U501(Speaker/Receiver Selection Switch)
→
CN102(LCD FPCB to Main PCB Connector)
→
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→
CN300(Main PCB to
OUT100, OUT101(Receiver
Only for training and service purposes