If the screen does not respond when touched, it could be due to one of two issues: a hardware failure of the touch sensor or a communication problem. Follow the steps below to diagnose the issue.

 

Step 1: Run Touch Test
1. Go to the Menu Screen and run the [Control Panel]-[Touch] menu.
2. When the [Touch] window appears, tap the [2. Touch Test: Start] button.
3. A white screen will appear. Touch various areas on the screen. If the screen is working properly, blue dots will appear where you touch.

 

Step 2: Analyze the Results
Case 1: Touch positions match the blue dots
The touch sensor is working correctly. Now check for communication issues. Refer to the communication manual to inspect cables and settings.

 

Case 2: Blue dots appear, but in the wrong location
The touch input is misaligned. Run [1. Touch Calibration: Start] to recalibrate the touch coordinates.

 

Case 3: No response to any touch
Check if the screen has any visible dents or pressure marks (e.g., from tools or foreign objects). If so, this can interfere with touch input.

 

- Repair and Support Information
If the screen has visible dents or is physically damaged, you may need to replace the front sheet.
In more severe cases, where the touch sensor is also affected, both the front sheet and touch sensor may require service (A/S).

 

Touch issues can also occur if the front sheet is deformed or if cutting oil or foreign substances have entered the screen and reached the sensor.

 

If there are no visible dents, deformations, or contaminants but the touch still doesn’t work, or calibration fails or the coordinates remain inaccurate, the touch sensor likely needs to be replaced.
In any of the above cases, please contact our Customer Support Center for repair service (A/S).