LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 134 -
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
Start
The sine wave appear at
C222,C224?
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Set phone with speaker phone mode
The sine wave appear at
C262, C267?
YES
Check the U202 or
Change the Main board
NO
Check the U208
and R229, R233
NO
YES
YES
Can you hear the tone?
Change the speaker
NO
YES
END
The sine wave appear at
pads of speaker?
Содержание KS10
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