Front Panel Touchscreen Calibration Error

Model-Specific Notes: • T-Series (e.g., T2600): These often have modern capacitive touchscreens. Ensure no screen protectors are interfering with touch sensitivity. A hard reset (power cycle) can sometimes clear temporary glitches. • Z-Series (e.g., Z6800): Some older Z-series might use resistive touchscreens, which are more prone to calibration drift. Ensure the screen is free of any pressure points from external objects. Expert Insight: After cleaning, attempt to access the service menu (if available) to force a touchscreen calibration. If the screen is completely unresponsive, check the front panel's FFC cable for secure connection and damage. For resistive screens, the digitizer layer can sometimes separate, causing permanent issues. For capacitive screens, static electricity or a faulty controller chip can be the cause. Ensure the latest firmware is installed, as it often includes touchscreen driver improvements.