Samsung SGH D900i - Ultra Edition 12.9 Cell Phone 60 MB Service Manual page 52

Flow Chart of Troubleshooting
9-9. Back Light (for Color Main LCD)
Backlight does not work
Yes
No
Is LCD Contrast set on high
Set LCD Contrast on high level
level in the Menu?
Yes
No
Resolder CN701 or change PBA
CN701 PIN 46 = H ?
Yes
END
9-15
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization