LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.15 Speaker phone path
MSM6280 HPH_R, HPH_L -> DAC & AMP(U575) -> connector -> Speaker
Start
Connect the phone to network
equipment and setup call
Setup 1KHz tone out
Sine wave appears at
D18 and D19?
Check D18/D19 or
Change the Main board
NO
Connecting speaker OK?
Re-connect speaker
NO
Can you hear the tone?
Change the speaker
NO
YES
END
YES
Содержание L704I
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