LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.10.2 Headset path (Voice & Multimedia play)
Voice path for Head_Set as below:
MSM7201A HPH_R, HPH_L
→
C516, C517
→
U503 (Audio Subsystem)
→
R416,417 #3, #4 pin of
J401 headset Jack
Start
The s ine wave
appear at C516, C517 ?
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 J401
or ch ange the Main b 'd
The sine wave appear at
R416, R417 ?
Check the U503
Or chang e the M ain b'd
NO
YES
Or Play Multimedia Contents
And insert head_set
EAR_SENSE is high?
(Or Som e Sound Signal)
Change th e Main board
NO
Summary of Contents for CT815
Page 1: ...Date May 2009 Issue 1 0 Service Manual Model CT815 Service Manual CT815 Internal Use Only ...
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