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SGH-E400 Flow Chart of Troubleshooting and Circuit Diagrams
4-
8
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8.Alert Tone
Check the connection
from CN200-1 to LCD
Module
Check the circuit related to
U401,R460
NO
Change Speaker
NO
Change LCD Module
NO
YES
YES
Abnormal Alert tone
END
YES
Check the PIN 31, 32 of
CN200-1
Is there alert wave?
Alert is ok?
Alert tone On by pushing the key
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