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SGH-E400 Flow Chart of Troubleshooting and Circuit Diagrams
7. Back Light
Backlight does not work
Check the soldered status of EL pad
YES
NO
Backlight "ON" mode in
Select backlight "ON" mode
the meue?
YES
NO
Check the PIN 3 of
Check the U601
CN200 = 2.8V?
YES
Check the connection
NO
Replace FPCB CONNECTOR
from CN200 to LCD
Module
YES
NO
LCD backlight on?
Change LCD Module
YES
END
4-7
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