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4. Trouble Shooting
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
U602 is broken.
Replace the U602.
NO
YES
1
Play the Ring tone.
Check the output(C621-C621) of U602
The signal is a Analog
Check the SPK_EN( R606)
Is SPK_EN a High?
U103(DBB) is broken.
Change the board.
NO
YES
2
<Fig.26> INPUT(C614) of U602
<Fig.27> OUTPUT(C619)of U602
Содержание KM710
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