SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-19
9-10. Key Back Light
Main Key LED does not work
Yes
No
Check the UCP200 related to
"KEY_ON(GPIOA29)"
U600 pin 3(KEY_ON) = "H"?
Yes
Change the U600
U600 pin 1(VDD_KEY_3.3V)
= 3.3V ?
END
Yes
No