找不到备份设备。请检查设备连接和电源情况。

Backup device not found. Check device connection and power.

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将电源与单控箱连接，不过要注意接线方法。启动跑车，检查其运动方向。

Link the control box to power and start carriage to check its moving direction.

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请检查设备连接和电源情况。

Check device connection and power.

youdao

请检查设备连接和电源情况。

Check device connection and power.

youdao