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Flow Chart of Troubleshooting
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7-19
7-10. Back Light (for LCD)
Is LCD Contrast set on
high
Set LCD Contrast on high level
END
No
Yes
Yes
Backlight does not work
U820 pin 6, 7, 14 = 3.8V ?
Resolder U820
No
Yes
U820 PIN 9~11 = H ?
Resolder U820
No
Yes
Yes
Replace the LCD Module