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