If the GOT screen is black and does not respond to touch, check the POWER LED on the main unit.

• Solid yellow/green
 Cause 1: Communication error
 Solution 1: Check that the controller settings are correct using the utility or screen design software. 
 Cause 2: Display damage or system application error
 Solution 2: Rewrite the package data. 
 Cause 3: Objects not displayed because of insufficient security level
 Solution 3: Log in again as a user with a higher security level. 
• Slow flashing yellow/green (fade-in 3 seconds/fade-out 3 seconds)
 Cause: Screen saver is active
 Solution: Check the status of System signal 1-1.b1 (Forced Screen Saver Enable signal). 
• Flashing yellow/green
 Cause: Decreased brightness or failure of the LCD backlight
 Solution: Contact the supplier. 
• Black (off)
 Cause: Power is not supplied to the GOT. 
 Solution: Check the power supply wiring and power supply voltage to the GOT.

If the solutions above do not resolve the problem, refer to the screen design software manual.