Receiver Path - LG L705i Service Manual

4. TROUBLE SHOOTING

4.14 Receiver Path

MSM6280 RCV+/RCV- → CN501 → LCD FPCB → Receiver
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Can you hear the tone?
The sine wave appears at
PIN43,PIN44 of CN501
The sine wave appears at
PIN43,PIN44 of CN104
Change the Main board
LGE Internal Use Only
Start
NO
NO
NO
- 110 -
YES
END
YES
Change receiver
YES
Folder FPCB re-connecting.
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