Flow Chart of Troubleshooting
9-9. Back Light (for Color Main LCD)
Backlight does not work
Yes
No
Is LCD Contrast set on high
Set LCD Contrast on high level
level in the Menu?
Yes
No
HEA616 PIN 40 = H ?
Resolder HEA616 or change PBA
Yes
No
Check I2C data is OK?
check related circuit from UCL200
Yes
END
9-17
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