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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
Voice Receiver path as below:
MSM7200A RCV_P, RCV_N
Æ
IC501 (Audio Subsystem)
Æ
Speaker solder PAD
Æ
Speaker
Start
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
YES
Can you hear the tone?
YES
END
YES
Change the Receiver
Hear the tone to
the receiver?
NO
END
4.10. Audio trouble
4.10.1. Receiver path
The sine wave appear
at R519, R531?
The sine wave appear
at Speaker Solder pads?
Check the IC501
NO
Содержание Vodafone GM750
Страница 1: ...Service Manual Model GM750 Internal Use Only Service Manual GM750 Date September 2009 Issue 1 0 ...
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