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Question:

The light beam motor reset failed and the serial port error occurred. What's the situation, the problem there?

The light beam motor reset failed and the serial port error occurred. What's the situation, the problem there?

Answer:

Suggest landlord one by one investigation method. LZ you can uninstall monitoring software, reinstall, try!
If it's remote control, you can check if the hard drive is properly installed on the video server and control whether the cable is connected properly.
Check the hardware for incorrect installation, for example: hard disk video recorder.

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