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90 Appendix 2: Basic Troubleshooting Checklists for IFP

Intermittent touch signal loss

Please try with another USB port on the video source (e.g.

computer).

Please try to connect the display to another video source (e.g.

computer).

Please try to connect the display to the video source (e.g.

computer) directly without any extension/trunking/faceplate.

Try to un-install the Smart Notebook software (if provided), and

install an earlier version. Contact the service provider for an

earlier version if needed.

Try with Windows Paint (for Windows operating systems).

Try with a thicker touch pen (6 mm as recommended, Figure 9)

for drawing on the touchscreen.

Use USB cable shorter than 5m or use extender if longer than

5m.

If the touch is not working only under Android, please connect to

the external device to confirm.

Check item

Check if

completed

Does the

problem still

exist?

Ye s No

Check item

Check if

completed

Does the

problem still

exist?

Ye s No

Please try with a different video source (e.g. computer).

Please try with a shorter USB cable (Figure 3).

Please try with another USB port on the video source (e.g.

computer).

Please try use a USB-powered hub (Figure 7) to connect the

video source (e.g. computer) and your display.

Use USB cable shorter than 5m or use extender if longer than

5m.

BenQ ST4301K Installation Handbook

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