Audio Trouble Shooting - LG L602i Service Manual

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4.16 Audio Trouble Shooting

4.16.1 Receiver Path
Voice Receiver path as below:
MSM6250A Ear1ON/Ear1OP -> CN500(b'd to b'd connector) -> Slide FPCB (b'd to b'd connector) ->
Receiver
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Hear the tone to the receiver
The sine wave appear at
The sine wave appear at
Receiver soldering point?
Can you hear the tone?
Start
NO
NO
CN500 Pin_48, 49?
YES
NO
YES
Change the Receiver
YES
END
- 105 -
4. TROUBLE SHOOTING
Change the Main board
Check connector pin and
Receiver soldering point.
Or Change the Slide FPCB

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