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SGH-E100 Flow Chart of Troubleshooting
7-
15
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9. Back Light (for Color Main LCD)
Is LCD Contrast set on
high level in the Menu?
Set LCD Contrast on high level
END
No
Yes
Yes
Backlight does not work
CN100 pin 23 = 2.8V?
Resolder U509
No
Yes
CN100 pin 15 = 3.05V?
Replace the PBA
No
Yes
Yes
Replace the LCD Module