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4. TROUBLE SHOOTING
Check the SPK_EN( R124)
Check the input(C212,C214) of U202
<Fig.1> INPUT(C212) of U202
LGE Internal Use Only
1
Is SPK_EN a High?
YES
Play the Ring tone.
The signal is a Analog
YES
U202 is broken.
Replace the U202.
NO
U104(DBB) is broken.
Change the board.
NO
2
<Fig.2> OUTPUT(C218)of U202
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Table of Contents
Troubleshooting
