LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.7 Audio trouble
4.7.1 Receiver path
Voice Receiver path as below:
MSM6245 RCV+, RCB-
→
U4001(Speaker/Receiver Selection Switch)
→
R4015, R4016 Receiver
Path
→
R4017 DNI Point (Rcv, Spk Selection)
→
FPCB
→
Speaker
- 72 -
start
R401 5, R4014 have
voice signal ?
Change the board
R4017 DNI point
is low ?
Change FPCB
Receiver is ok ?
END
Change U 400 1
YES
YES
NO
NO
NO
Change the Speaker
YES
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Содержание KF310
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