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