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Flow Chart of Troubleshooting
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9-21
9-12. LCD Back Light
Yes
Is BACKLIGHT set
AlwaysON in the Menu?
Yes
Backlight does not work
No Set BACKLIGHT on Always ON
No Replace or Resolder U603
C627 ≥ 3.5V
Yes
Replace the LCD
Yes
END
U603 Pin 10, 11, 12 ='H'?
Yes
No Check UCP300, U603