SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-16
9-9. Back Light (for 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
HDC700(Pin43) = H ?
Check the UCP200
No
Yes
Check the VBAT pins of
HDC700.
Pin 38, 40, 42 = 3.8V?
Check the related circuit of VBAT.
No
Yes
Yes
Replace the LCD Module