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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
10-24
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10-1-9. LCD
Back light does not work
Is LCD Contrast set on high
Level in the Menu ?
Set LCD Contrast on high level
NO
Replace the LCD Module
YES
YES
12V < V_LED < 13V
back light IC U601
Check the U601 & relation circuit
NO
VLCD_1.8 =1.8V & VLCD_2.8=2.8V
U600
YES
Check the U600 & relation circuit
NO
Is HDC601 connector connected?
YES
Check the HDC601 connector
NO
YES
Control Signal
LCD_RS, LCD_CS, LCD WR
F600
YES
Check the UCP700
NO
END
Back light does not work
Is LCD Contrast set on high
Level in the Menu ?
Set LCD Contrast on high level
NO
Replace the LCD Module
YES
YES
12V < V_LED < 13V
back light IC U601
Check the U601 & relation circuit
NO
VLCD_1.8 =1.8V & VLCD_2.8=2.8V
U600
YES
Check the U600 & relation circuit
NO
Is HDC601 connector connected?
YES
Check the HDC601 connector
NO
YES
Control Signal
LCD_RS, LCD_CS, LCD WR
F600
YES
Check the UCP700
NO
END
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