LG KP330 Service Manual page 131

4. TROUBLE SHOOTING
4.20.3 Receiver Path ( Voice Call )
MSM6260 EAR1ON/EAR1OP
Fpcb pad Receiver
And check the connector CN500/CN701
LGE Internal Use Only
CN500 LCD connector
Start
Check in 'Loopback test'
of Engineering mode
Can you hear the loop back?
NO
Check the sine wave
On receiver PAD
NO
Is the sine wave appeared
After C200/C202.
NO
Change the Main board
- 132 -
CN701 FPCB_To_Main connector
YES
END
YES
Change receiver
YES
Change LCD FPCB
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