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4. TROUBLE SHOOTING
4.15.4 Loud speaker path (voice speaker phone)
Loud speaker path as below:
MSM6275A HPH_R, HPH_L → C222,C224 → U202(audio codec) → C262,C267 → U208
(Speaker AMP) → pads of speaker → Speaker
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Set phone with speaker phone mode
The sine wave appear at
The sine wave appear at
The sine wave appear at
Can you hear the tone?
LGE Internal Use Only
Start
NO
C222,C224?
YES
C262, C267?
YES
pads of speaker?
YES
NO
YES
END
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Change the Main board
NO
Check the U202 or
Change the Main board
NO
Check the U208
and R229, R233
Change the speaker
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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