LG LG-P715 - Page 96

4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
4.13.2 Headset path
MSM8225 HPH_R, HPH_L -> C6011, C6012(TP2) -> M6001 (TPA2058D3: Audio Subsystem) ->FB6001, FB6002(TP1) ->
J6001 ( 3.5pi Ear-jack )
END
Change the main PCB
Change the M6001 (Audio subsystem)
Connect the phone to network
equipment and set-up call.
Set-up 1kHz tone out
The Sing wave appear at
FB6001, FB6002 (TP1)
The Sing wave appear at
C6011, C6012(TP2)
Can you hear the 1kHz Tone?
No
No
No
Yes
Yes
Yes
START
Change the U2001
or Change the Main PCB