SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
7-13
9. Key Back Light
Is BACKLIGHT set Always
ON in the Menu?
Set BACKLIGHT on AlwaysON
END
No
Yes
Yes
Key Backlight does not work
U304 pin 3 = "H"?
CN702 pin 15,17 = 3.3V?
No
Resolder U302 / CN702 pin 30
or replace KeyPCB Module
Yes