1. Restart the device: Try to turn off the device, wait a few seconds, and then turn it on again. This can solve many temporary problems.
2. Check the network connection: Make sure the device is connected to the Internet. Some functions may require a network to work properly.
3. Software update: Ensure that the software and operating system are the latest version. Older versions of the software may contain incorrect or outdated code, which may cause initialization problems.
4. Contact technical support: If all the above methods have been tried, but the problem still exists, it is best to contact the technical support team of the concert hall. Staff will be able to provide more specific solutions, or may need to look at the equipment to find out the problem.