LG-ID3100
LGE
LG Electronics Inc.
Checking Flow
START
Does Speaker work Properly?
NO
SETTING : “Ringers” at Sounds menu
Check the contact of speaker or
Replace the speaker
Replace U201(QSC6010) or board
NO
Yes
Yes
Check the signal
level at TP3, TP4
of U308, U309
Re-soldering or
Replace the U308, U309
Speaker will work properly
Yes
NO
Check the signal
TP1, TP2 of U308,
U309
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LGE Internal Use Only