4.15 Audio trouble
4.15.1 Receiver path
Voice Receiver path as below:
MSM6280 Ear1ON/Ear1OP
→
U201(audio codec)
→
CN400 (B to B connector between Main and
Folder )
→
CN103 (B to B connector to LCD FPCB)
→
receiver solder PAD included in LCD Module
→
Receiver
- 127 -
4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Start
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
YES
The sine wave appear at
R101,R102 of Folder FPCB?
NO
Can you hear the tone?
YES
END
Check connector pin
or change the LCD FPCB
YES
Change the Receiver
Hear the tone to the receiver?
NO
END
The sine wave appear
at C210,C211?
The sine wave appear
atC403,C404?
Check the U201 or
Change the Main board
NO
YES
YES
Check the pads of Receiver
Содержание KT610
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