19.5 Backlight Shutoff Detection and Replacement
19 - 6
17
ADDITION TIMES RESET
FOR MAINTENANCE TIME
NOTIFICATION
18
INSTALLATION OF
COREOS, BOOTOS AND
STANDARD MONITOR OS
19
MAINTENANCE AND
INSPECTION
20
TROUBLESHOOTING
APPENDICESINDEX
19.5 Backlight Shutoff Detection and Replacement
The backlight is built into GOT for the liquid crystal display.
When GOT detects backlight shutoff, the POWER LED blinks green/orange alternately.
The brightness of the backlight decreases with the lapse of usage period. When backlight shutoff is detected
or the display becomes unclear, replace the backlight.
When replace the backlight, refer to "19.6 Backlight Replacement".
(1) Life of backlight
The usable duration of backlight can be extended by setting to [Screen saving backlight off] in the
utility of GOT (GOT set up).
Refer to the following for details.
11. DISPLAY AND OPERATION SETTINGS (GOT SET UP)
(2) Replacement time of backlight
The backlight replacement time can be set by the utility of GOT (Maintenance timing setting) with
reference to the life of backlight.
Refer to the following for details.
16. MAINTENANCE TIME NOTIFICATION SETTING (MAINTENANCE TIMING
SETTING)
Moreover, when system alarm is used, the message that notifies of the backlight replacement time can be
displayed on the GOT screen.
Refer to the following for the system alarm display.
• GT Designer3 Version1 Screen Design Manual (Functions) (10. ALARM)
• GT Designer2 Version
Screen Design Manual
(8. ALARM)
Precautions for the backlight shutoff status
In the backlight shutoff status, the touch key operates.
Early replacement of backlight is recommended.
System alarm
502 Warning! Backlight needs replacement soon.
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