Flow Chart of Troubleshooting
3-1-7. LCD
LCD does not Display
First, Check the connection of CN305 and LCD
Have a some problem of
connector (CN305)
Backlight does work
check the data line from
CN305
try with the new LCD module and
NO
YES
YES
change
①
YES
Replace a connector (CN305)
②
NO
③
NO
3-16
Check of
U301
(pin 7)
Check
U401