Receiver Path - LG GU280 Service Manual

4.16 Receiver Path

QSC6240 EARON/EAROP
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Can you hear the tone?
The sine wave appears at
FB110,FB111?
Change the Main board
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Only for training and service purposes
FB110, FB111 RCV100
Start
YES
NO
YES
NO
- 75 -
Receiver
END
Change the receiver
Change the FPCB
4. TROUBLE SHOOTING
LGE Internal Use Only