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6-11
Section
System Maintenance
158
Check if the RUN Indicator lights normally.
Check the RUN Indicator by following the menu operations from the Device
Check Menu as shown below.
Select LED Check.
•
If the RUN Indicator is functioning normally, it will operate as follows. At this
time the LED Check touch switch will be displayed in reverse video.
Lit in green OFF lit in red OFF lit in green...
•
To end the LED check, press the LED Check touch switch on the DEVICE
CHECK MENU screen again.
Check if the LCD (screen display) lights normally by following the menu opera-
tions from the System Menu as shown below.
Select LCD Check.
•
The check screen displays all the dots on the screen: either press anywhere on
the touch panel or wait for three seconds and all the dots will be cleared.
On completion of the display and clearance of all dots, the NT21 returns to
the DEVICE CHECK MENU screen.
•
To abort the LCD check, press the top right corner of the touch panel. The
NT21 will return to the DEVICE CHECK MENU screen.
Check if the backlight lights normally by following the menu operations from the
Device Check Menu as shown below.
Select Backlight Check.
•
If the backlight is normal, it flashes. At this time, the Backlight Check touch
switch is displayed in reverse video.
•
To end the backlight check, press the Backlight Check touch switch again.
Checking the RUN
Indicator
Checking the LCD
(Screen Display)
Checking the Backlight