Cause
The backlight burnout detection function is activated because the backlight is nearly burnt out. Or, the power supply voltage supplied to the display unit is low.
Solution
When the backlight is nearly burnt out
Replace the backlight. If the problem continues after the replacement, please contact your local distributor. If the status LED illuminates in orange soon after purchase, please contact your local distributor.
The backlight burnout detection function monitors the current consumed by the display unit. Depending on the failure type of the backlight, burnout may not be detected, or may be detected earlier than complete burnout. If this problem occurs soon after purchase, the display unit may be faulty. In such cases, please contact your local distributor.
When the power supply voltage supplied to the display unit is low
Measure the power supply voltage of each display unit and adjust it to the value within the Rated Voltage range specified in the manual or the Installation Guide. If the problem continues even after the power supply voltage is adjusted, please contact your local distributor.
