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System Maintenance Section 6-11
Checking the LCD (Screen
Display)
Check if the LCD (screen display) functions normally by following the menu
operation from the System Menu shown below.
• The check screen displays all the dots on the screen: either press any-
where on the touch panel or wait for three seconds and all the dots will be
cleared.
With the NT31C, the display and clearance of all the dots on the screen
is repeated for each color in turn (red green blue magenta cyan yellow
white black).
On completion of the display and clearance of all dots, the NT31/
NT31C returns to the DEVICE CHECK MENU screen.
• Touch the touch panel to discontinue the LCD check. Even if 3 seconds
have not passed, the check will proceed to the next color.
Select Maintenance Mode.
Select I/O Check.
Select Device Check.
Select LCD Check.
Ver 4.12
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