LG GT540 - Page 120

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4. Trouble Shooting
4.12.2. Headset path (Voice & Multimedia play)
Voice path for Head_Set as below:
MSM7227 HPH_R, HPH_L -> Audio subsystem (WM9093) -> 3.5pi Ear-jack
Connect the phone to network
Equipment and setup call setup
1KHz tone out and insert head_set
or Play Multimedia Contents
and insert head_set
END
The sine wave appear at
TP3(FB502), TP4(FB503)?
Change the Main board
START
Yes
Can you hear the tone or sound?
No
No
The sine wave
(or Some Sound Signal) appear at
TP1(C519), TP2(C518)?
Change the Main board
Yes
No
Check the 3.5pi Ear-jack
or change SPK Module
Yes