Returnstar Interactive Tech IQTouch TB1300 Pro User Manual page 84

when the external signal source
channel is being used.
There is no sound when the HDMI in
channel is used.
No image is displayed when the
HDMI out channel is used.
The touch function on the front
panel is ineffective.
The USB flash drive cannot be
identified.
The conference records cannot be
saved on the USB flash drive, and the
system prompts "The target storage
product has no write permissions."
The OPS has no signal.
In the embedded operating system
or Windows system, no wireless
network can be found or the wireless
network signal is weak.
The keyboard is
displayed.
Ensure that the USB touch cable is connected to the
proper port. For details, see section "Ports".
Remove and insert the USB touch cable again.
Remove and insert the HDMI cable again.
Generally, this issue is caused by the compatibility of
the external display product. Replace the external
display product and test again.
The HDMI cable is too long or has a poor quality.
Replace the HDMI cable delivered with the product.
Touch the button using your full fingertip.
Check whether the finger is wet or has other liquids on
it.
Restart the screen.
Check whether the USB flash drive is inserted into the
correct USB port. For details, see section "Ports."
Format the USB flash drive to the FAT32 format.
Check whether the OPS is properly inserted in the slot.
Check whether the OPS is in shut down mode.
Press the power button on the OPS (for details, see the
instructions of the OPS), and manually start up the OPS.
Check whether the Wi-Fi antenna is properly installed
on the embedded operating system. For details, see
section "Ports".
Check whether the Wi-Fi antenna is properly installed
for the OPS.
not correctly Confirm that the hardware keyboard is enabled.
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