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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4.15.2 Voice path for headset
Voice path for Head_Set as below:
MSM6275A HPH_R, HPH_L
→
C222,C224 U202(audio codec)
→
FB702, FB704
→
C242,C244
→
#4, #5 pin of CN202 headset Jack
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
And insert head_Set
The sine wave appear at
C242,C244 ?
YES
Check the U202
or change the Main b'd
NO
Can you hear the tone?
NO
YES
YES
END
Headset insertion detection
in the Main LCD Display OK?
Check #8 pin of CN202
or change the Main b'd
NO
YES
Check the CN202
or change the Main b'd
Содержание KS10
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