![background image](http://html.mh-extra.com/html/samsung/sgh-d900/sgh-d900_service-manual_1190498043.webp)
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-14
9-8. Back Light (for LCD)
Replace the LCD Module
Yes
Yes
No
Resolder U101
U101 PIN 12~16 = H ?
Yes
No
Resolder U101
U101 pin 1, 2 = 3.8V ?
Backlight does not work
Yes
Yes
No
END
Set LCD Contrast on high level
Is LCD Contrast set on high
level in the Menu?