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Flow Chart of Troubleshooting
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9-19
9-9. Key Back Light
HDC500 pin7 is "High"?
Check the U300 related to "VDD_KEY"
END
No
Yes
Yes
Main Key LED does not work
C300 = 3.3V ?
Resolder or Change U300
No
Is KeyPBA working ?
Change the keyPBA
No
Yes
Yes
Содержание GT-S5200
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