Back Light - Samsung SGH-Z150 Service Manual

7-8. Back Light

Back Light does not work
Is "BACKLIGHT" set
"Always ON" in the Menu?
L401 = 2.8V?
C411 = 2.8V?
Replace the LCD Module
Yes
Yes
Yes
Yes
Yes
END
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No
Set "BACKLIGHT" on "Always ON"
No
Replace L401
No
Replace U402(LCD Switch)
7-15
Flow Chart of Troubleshooting