Common malfunctions: The motor does not work after being energized, there is no abnormal sound, and there is no smell or smoke. Check the cause of the failure: 1. Is the power cord connected? 2. Whether the insurance system is blown. 3. Is the current/voltage adjusted too small? 4. Whether the equipment wiring is connected incorrectly. Check the cause of the failure and then exclude it: 1. Check the power supply line, fuse, and wiring for disconnection and repair. 2. If the fuse burns out, check the model and the cause of the fuse and replace it. 3. Adjust the fixed value of voltage and current to match the motor. 4. Check the wiring connections and connect them correctly. Barcode Scanner,Qr Code Reader,Handheld Barcode Scanner,Automatic Barcode Reader Guangzhou Aigather Intelligent Technology Co., Ltd. , https://www.aigathergz.com