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SGH-D730 Flow Chart of Troubleshooting and Circuit Diagrams
2-
15
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2-1-6. Speaker Part
Resolder and check the board
to board connector
CN303
NO
Check
U203
NO
Change or resolder
R232
,
R233
NO
YES
YES
YES
Speaker does not work
END
Check the connection
status spk to CN303
Check the
pin 4 of U201 = "LOW"
Check R232, R233
Is speaker ok?
YES
Change Speaker
NO
①
②
③