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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
3-26
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3-1-9. LCD
LCD does not work
Check HDC300
(BackLight enable)
PIN #20 = 2.6V
NO
Check the UCP100
(backlight enable Path)
YES
Connect the J3 of LCD circuit
Check the J3 of LCD circuit
Check the HDC300
(LCD Connector)
Connect the HDC300
YES
NO
NO
YES
END
Resoldering the J2
Of LCD citcuit
Check U407
Chech HDC300
PIN #19 = 3.0V
NO
YES
LCD does not work
Check HDC300
(BackLight enable)
PIN #20 = 2.6V
NO
Check the UCP100
(backlight enable Path)
YES
Connect the J3 of LCD circuit
Check the J3 of LCD circuit
Check the HDC300
(LCD Connector)
Connect the HDC300
YES
NO
NO
YES
END
Resoldering the J2
Of LCD citcuit
Check U407
Chech HDC300
PIN #19 = 3.0V
NO
YES