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Flow Chart of Troubleshooting
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9-19
9-10. Back Light (for Color Main LCD)
Is BACKLIGHT set
AlwaysON in the Menu?
Set BACKLIGHT on Always ON
END
No
Yes
Yes
Backlight does not work
Check the outflow voltage
of U402(PIN 5) is equal to
3.7V
Replace U402
Not OK
OK
Yes
Replace the LCD Module