XO Troubleshooting Touchscreen
Symptoms
Slow Response
Certain activities may be slow to respond to drawing actions. You can either upgrade the activity, or use slower movements of the fingers. Closing already open activities before starting new activities can be helpful as well.
No Response - Small Fingers
Unusually small fingers may not be registered.
The area of contact should be 8mm wide. If a child has unusually small fingers, they can either press slightly harder, or at a lower angle (to widen the area of contact), or use a thumb.
No Response - Some Areas
An obstruction to the light guide can make whole sections of the display unresponsive.
Dirt or dust can be captured in the angle between the display and the light guide. Examine the area with magnification. Remove dirt or dust. Do not use an abrasive. Do not use water.
No Response - Anywhere
If the laptop does not respond to the touchscreen at all, this usually means a break in the cable between the computer and the touchscreen, which will require repair.
Ramp Units
XO-4 ramp units (SKU301 through to SKU306) may have been incorrectly assembled, and the touchscreen may not work. This can sometimes be fixed by disassembly and reconnecting the cable. These units must be tested before deployment.