Erratic, Inaccurate, Or Poor Touch Behavior - Planar UltraRes URL109-MFT User Manual

3. If there is still no entry, disconnect the internal USB cable, and while one person holds the
cover in place, a second person will connect the Windows PC directly to the front cover's
USB cable.
Front Cover USB
Once the PC is directly connected, if "HID-compliant touch screen" is still not present in
4.
Device Manager, the issue may be located within the electronics assembly. Contact
Planar support for further guidance.

30.8 Erratic, inaccurate, or poor touch behavior

If the touch sensor is present in the PC's device manager, but the touch is performance is
erratic.
Note: Please complete all prior troubleshooting steps described in section 30.2 before
disassembling the side trim pieces
Possible Cause
Flex cable connection or PCB connections are damaged or not fully inserted.
Solution
1. Verify there is no debris covering the touch sensor lens around the perimeter of the
display image.
2. Verify that all screws are installed holding the touch sensor in alignment.
3. Verify there is nothing around the touch sensor that is causing it to not attach properly.
4. One at a time starting with the upper left corner, verify the touch flex cable connection is
connected properly and there is no damage to the cables.
5. One at a time starting at the top, verify that the connectors in the middle of the trim are
fully connected and not damaged.
Planar UltraRes L Series 109" User Manual
020-1434-00A
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Electronics Assembly USB
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