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Flow Chart of Troubleshooting
7-5
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7-1-2 LCD Working
Insert Power
Main LCD Back
-light On?
LCD Display
OK?
Check pulse
of V503's pin6
Check HEA501,
F500, F501
F502,F503,and
it's Short=?
Yes
Yes
No
No
Yes
No
No
Yes
Check HEA501 and it's
neighboring circuits
Replace HEA501,
F500, F501 F502,F503 and
it's neighboring circuits
Change LCD
Change LCD
END