Casio QT-2100 Service Manual page 47

[ 9 ] LCD test
This test will check the LCD.
Operation : n 0 2
n : 0 = One time check
Not 0 = Continuous check ( To stop the test, press "Esc" key )
Note : When the one time check is selected, the following message will appear.
"Please Hit key OK -> 1 NG -> 9"
Press "1" key or "9" key.
LCD
Please Hit Key OK->1 NG->9
LCD
END
[ 10 ] LCD back light OFF test
This test will turn off the back light for LCD.
Operation : 1 2 1
Note : After this operation has been entered, the following message will appear.
"Please Hit Key OK -> 1 NG -> 9"
Press "1" key or "9" key.
Since the backlight is turned off in the backlight test, characters on the display are difficult to see.
[ LCD ]
BACK LIGHT 121
BACK LIGHT OK
END 121
1 SUBTOTAL
[ LCD ]
Continuous
Check
n021
OK
n021
One time
Check
[ PRINT ]
LCD n021
LCD OK
END n021
SUBTOTAL
— 45 —
[ PRINT ]
1234567890123456789012345678901234567890
BACK LIGHT 121
BACK LIGHT OK
END 121