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Flow Chart of Troubleshooting
3-15
3-1-7. LCD
LCD does not Display
First, Check the connection of HDC500 and LCD
①
Have a some problem of
connector (HDC500, J1)
YES
Replace a connector (
HDC500,
J1
)
②
NO
NO
Check of
U1
(pin 19, 20)
③
NO
Check
U412
Backlight does work
YES
try with the new LCD module and
change
check the data line from
HDC500
YES