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Flow Chart of Troubleshooting
9-9. Key Back Light
Key Backlight does not work
Yes
No
Set BACKLIGHT on AlwaysON
Is BACKLIGHT set
AlwaysON in the Menu?
Yes
No
Resolder as following picture point or
HDC301 pin 17
Replace KeyPAD and Resolder
KEY_EL_DRV = "H"?
Yes
END
9-14
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