Headset Microphone - LG TracFone LG840G Service Manual

4.20 Headset microphone

Headset -> 3.5Phi_EarJack-> MIC2P(TP1) -> QSC6270
Insert Headset & Make a call
LGE Internal Use Only
START
Yes
Change the Headset
No
Sine wave appears at
TP1?
Yes
Change the MAIN board
Yes
Change the User's Headset
No
Change the 3.5Phi_EarJack
- 99 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Only for training and service purposes