LG F3000 - Page 77

4. TROUBLESHOOTING
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START
Yes
Check the state of
contact of dual speaker
Yes
Check
U303 works properly
Reassemble speaker
No
No
Yes
C101,C102, C106, C107
are Well-soldered?
Re-solder C101, C102, C106, C107
No
Re-solder U303
Speaker working!
Yes
Speaker
Works properly?
No
Change main board
Checking Flow