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Flow Chart of Troubleshooting
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9-
17
9-11. Main Key EL sheet part
END
Yes
Is it working?
Yes
Yes
Check the 4 pin of U707
is high
Check the U707
No
Yes
Main key LED does not work
Check the 6 pin of U709
and C754
Check the U709
No
Summary of Contents for SGH-E780
Page 9: ...Specification 2 4 ...