6 FAQ
1. Missing or abnormal colors.
If the device is connected to a computer, check whether the HDMI cable is intact and correctly
connected.
2. The image is not displayed in full screen or part of the image is outside the screen.
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Check whether the resolution is 16:9.
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If the device is connected to an external computer, unplug the HDMI cable, and then plug it
back in.
3. The device displays images but has no sound.
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Adjust the volume.
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If the device is connected to a computer, check whether the audio cable is correctly
connected.
4. The device cannot be powered on.
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Make sure that the device is connected to power supply, the power switch is on, and then
check whether the indicator on the front panel is on.
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If the indicator is off, and the ports such as the RJ-45 network port and USB port have no
power, it might be a problem with the power supply of the device. Check whether the fuse at
the input of the power cable is blown.
If the fuse is blown, replace the fuse.
If the fuse is normal, it might be the power board or motherboard exception. You need to
remove the back cover to replace the power board or motherboard.
5. Wireless screen sharing cannot be connected / or the connection is unstable.
Check whether the hotspot of the device is enabled. After it is enabled, search for the hotspot to
see whether it can be found.
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If the hotspot search and connection are normal, but wireless screen sharing has an unstable
connection, update the software to the latest version.
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If the hotspot cannot be enabled, the hotspot module might be abnormal and needs to be
replaced.
6. Wi-Fi connection failed.
Check whether the Wi-Fi is enabled, search the hotspot and connects to it. If the connection is
failed, replace the motherboard.
If the hotspot is connected, check whether the configuration is normal.
7. USB External Device Function Exception.
The exceptions contain unavailable functions and abnormality in external device.
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The external device function is not available in the Android system:
Make sure that external devices are powered on and running normally, and the external
devices (such as USB CODEC, USB CAM, or USB Speaker) is selected in the external device
management as the corresponding functional input or output source.
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The external device function is not available in the OPS Windows system or under other
signal sources:
Make sure that external devices are powered on and running normally, and external devices
such as USB CODEC, USB CAM, or USB Speaker are disabled. Then select the external devices
as the corresponding functional input or output source.
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USB external device function exception: Delayed movement in wireless mouse:
User's Manual
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