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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-15
9-9. Back Light (for Color Main LCD)
Is LCD Contrast set on high
level in the Menu?
Set LCD Contrast on high level
END
No
Yes
Yes
Backlight does not work
U100(SUB PCB) PIN 3 = H ?
Check the inserting condition of slide FPCB
Resolder
UCP201
or change PBA
No
Yes
U100 PIN 1 = 7V ?
Check the U100 & the related circuit
No
Yes
Yes
Replace the LCD Module