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Flow Chart of Troubleshooting
9. Back Light (for Color Main LCD)
Downloaded from
www.Manualslib.com
Backlight does not work
Yes
Is LCD Contrast set on high
level in the Menu?
Yes
CN800 pin 14 = H ?
Yes
U800 PIN 1 = 7V ?
Yes
Replace the LCD Module
Yes
END
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manuals search engine
No
Set LCD Contrast on high level
No
Change the board to board
No
Check the U800 & the related circuit
7-20
FPCB
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