![background image](http://html.mh-extra.com/html/samsung/sgh-b130/sgh-b130_service-manual_1190331033.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-21
9-9. Back Light Part(For Color Main LCD)
Backlight does not work
Yes
No
Set BACKLIGHT on Always ON
Is BACKLIGHT set always
ON in the Menu?
Yes
Check the output voltage of
U301(Pin #2) is equal to
3.7V
Yes
No
Replace the U301
Replace the LCD Module
Yes
END