Flow Chart of Troubleshooting
R430
TA601
U602
C541
R528
LCD backlight does not
work
YES
F700 pin #8 is 'High'?
YES
C702 is 'High'?
C702 is 'High'?
YES
Repalce the LCD module
YES
END
C532
R525
C537
C536
NO
NO
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621
627
R626
C620
C619
Change PBA
Check U400, U602
9-4