SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-18
9-10. Key Back Light
U700 pin 6 = H ?
Check the U700 related to "KEY_LED_ON"
signal
END
No
Yes
Yes
Main Key LED does not work
U700 pin 3 = H ?
No
Replace U700
Yes