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What should I do if the operation screen fails?

If the file cannot be read, the main reason is that the card slot fails to read and the card slot needs to be replaced. If the file is garbled, first check whether the file name contains Chinese. If it is not compatible, the screen and the motherboard are not compatible, and the screen or corresponding firmware needs to be replaced.

If the screen touch does not respond or another command is executed, and the executed action does not correspond to the clicked command, there is a problem with the screen touchpad and the screen needs to be replaced.