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6. Speaker Part
Speaker does not work
Yes
Check the
connection from
CN201 to LCD
module
Yes
Check the PIN 4
and PIN 8 of
U401='High'?
Yes
Is speaker ok?
Yes
Is speaker ok?
Yes
END
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SGH-X400 Flow Chart of Troubleshooting
No
Check the circuit related
to U401
No
Check U601
No
Check U701
No
Change Speaker
4-9
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