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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
Voice path for Head_Set as below:
MSM7200A HPH_R, HPH_L
Æ
C515, C516
Æ
IC501 (Audio Subsystem)
Æ
C404, C449
Æ
#2, #3 pin of
CN401 u-USB connector
4.10.2. Headset path (Voice & Multimedia play)
Start
The sine wave
appear at C515, C516 ?
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
And insert head_Set
YES
Can you hear the tone
or sound?
NO
YES
END
YES
Check the CN401
or change the Main b’d
The sine wave appear at
C404, C449 ?
Check the IC501
Or change the Main b’d
NO
YES
Or Play Multimedia Contents
And insert headset
(Or Some Sound Signal)
Содержание Vodafone GM750
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