QPC-DC Series USER MANUAL
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directed by the application.
3.4 Touch Screen Care and Clean
Only use soft non-abrasive lint free wipes with Isopropyl 99% to clean dirt or stains
found on the touch panel. Always dampen the wipes and then clean the touch panel.
Chemical liquids with strong acidic base will damage the touch screen and void the
warranty.
3.5 Troubleshooting
If you experience operational difficulties with the touch screen system either during or
after installation, the following sections will help you to determine the source of
problems.
The first step in troubleshooting is to determine whether the problem is related to the
display, software, or hardware. And please pay attention to special notes as follows.
•
Do not confuse display problems with touch screen problems, as the two
issues are unrelated.
•
Software problems are determined by a basic hardware functionality test. If the
hardware transmits touch coordinates correctly, then the problem is probably
with the driver or application software.
•
Hardware problems may be caused by the touch screen, controller, cabling,
power supply, or the integration of the touch screen components in the display.
3.5.1 Display
Problems
If the display has some problems (such as no video, no horizontal or vertical
synchronization, raster non-linearity, etc.), remember that the video function of the
display and the touch screen installed on the display are separated systems.
Therefore, problems with the display should be treated as display problems, not
touch screen problems. Diagnostic procedures and any possible corrections for
display problems should be performed.
3.5.2 Video
Alignment
Problems
If the touch screen is responding and the data is linear, but it does not respond at the
appropriate zone, try to align the video. Use
Touchkit
program.
3.5.3 Software
Troubleshooting
Before beginning software troubleshooting, verify that the touch screen hardware is
working normal for serial controllers by running the touchscreen program. If the
