Touch Screen
TOUCH SCREEN - TROUBLESHOOTING CHART
| Symptom | Possible Causes | Remedy |
|---|---|---|
| The cursor does not respond (does not follow finger contact). | Touch controller defective or system `crashed'. | Switch the control panel off (press the on/off switch for 5 seconds = forced switch-off) and then on again. If the fault persists or occurs more frequently, send a Fault Report Fax. |
| The touch screen remains dark; no error message by means on LED. | Touch screen is in the energy-saving mode. | Not a fault. The screen image reappears when the touch screen is touched. |
| Backlighting failure. | If you glance sideways at the touch screen, you can detect vague characters. Send a Fault Report Fax. | |
| The cursor arrow is not located beneath the point of touch (touch offset) | Touch the controller set incorrectly. | The touch controller must be calibrated in the "Administration" window. Press the "Calibrating touch screen" button, enter the password and follow the instructions that are displayed. If this does not eliminate the problem, send a Fault Report Fax. |
| Incorrect pixel colors | Individual transistors defective. | Individual pixels of incorrect colors are tolerable. If the entire screen rows or columns are incorrect, send a Fault Report Fax. |
IMPORTANT:
Only use finger or the touch pen to operate the screen. Screen damage may result otherwise.