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Flow Chart of Troubleshooting
9-16
9-9. LCD Part
GPIOA25 pin of UCP200
backlight is high?
Replace the LCD backlight IC
END
No
Yes
Yes
LCD does not work
Check soldering between
the board pad and LCD
pad(HDC600)
Rearrange the soldering pad
(HDC'S connection)
No
Yes
Is it working?
Check the LCD module
No
Yes