Table of Contents
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Flow Chart of Troubleshooting
9-9. Back Light (for Color Main LCD)
Back light does not work
Yes
No
Is LCD Contrast set on high
Set LCD Contrast on high level
level in the Menu?
Yes
No
Check the U404 or replace U404
HDC701 pin 28, 30 = 3.0V?
pin 22 = 1.8V?
Yes
No
Check the U607
HDC701 pin 2 = 18V?
Yes
Replace the LCD Module
Yes
END
9-24
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