LG LG-P715 - Page 99

4. TROUBLE SHOOTING
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4.13.3 Speaker/Speaker Phone path
MSM8225 LINE_OP, LINE_ON -> C6013,C6018(TP1) -> M6001 (TPA2055D3 : Audio Subsystem)
-> FB6003, FB6004(TP2) -> CN100
END
Re-contact or change the SPK module
Change the SPK module
Connect the phone to network
equipment and set-up call.
Set-up 1kHz tone out
The Sing wave appear at
C6013, C6018 (TP1) Pad
The Sing wave appear at
FB6003, FB6004(TP2)
Can you hear the 1kHz Tone?
No
No
No
Yes
Yes
Yes
START
Change the U2001
or Change the Main PCB