User manual

6–11
Chapter 6 – Initializing the LT
LT Series User Manual
• To exit the CONTRAST SETTING mode, touch anywhere
above the Contrast Setting bar.
• You cannot enter the CONTRAST SETTING mode while
waiting for LT to start up.
• CONTRAST SETTING adjustments (LT and external de-
vices) can be made during RUN mode.
BRIGHTNESS SETTING
The brightness control function is unavailable and the setting is invalid in the LT
unit.
SET UP LCD
This setting reverses the colors of the LT unit’s display screen and characters.
To reverse the screen’s display, touch SET UP LCD on the SET UP I/O screen to
change the setting from NORMAL to REVERSE, and then touch the SET key.
The display color reverses and the SET UP I/O menu reappears.
USE TOUCH PANEL AFTER BACKLIGHT BURNOUT
Access this setup screen by touching [NEXT]. This setting allows the user to
enable [YES] or disable [NO] the touch operation when the backlight burns out.
Setting this item to [NO] prevents the LT from sending input signals to the exter-
nal devices.
When the Backlight Burns Out:
• The Status LED’s orange light will turn ON.
• The System Data Area’s Status bit 10*
1
will turn ON.
• If the SYSTEM RESET item is set to ON, only SYSTEM
RESET can still be performed by touch operation.
• If the LT is in OFFLINE mode, the touch-panel operation
will become enabled, regardless of the settings.
Normally, the unit detects backlight burnout by monitoring the current;
however, depending on the problem with the backlight, the unit may fail
to detect this condition.