Receiver Path - LG lg530g Service Manual

4.15 Receiver Path

QSC6270 EARON/EAROP -> RCV_P ( TP1 ), RCV_N ( TP2 ) -> Audio Sub System (M500)
-> SPK_P( TP3 ), SPK_N ( TP4 )-> Speaker
START
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Can you hear the tone?
The sine wave appears at
TP1, TP2?
Change the Main board
LGE Internal Use Only
Yes
No
Yes
No
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4. TROUBLE SHOOTING
END
Change the SPK
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