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Flow Chart of Troubleshooting
7-
16
7-9. LCD Part (for Color Main )
Is LCD Contrast set on
high level in the Menu?
Set LCD Contrast on high level
END
No
Yes
Yes
LCD does not work
HDC700 pin 13, 15 = 2.8V?
Resolder LCD module
No
Yes
F704 pin 4, 5, 6 is OK?
Check the U401
No
Yes
Yes
Replace the LCD Module