See link for troubleshooting video guidelines: https://youtu.be/1MZBXChrv9k
Note: The video only shows the steps, process and method of troubleshooting, the details are based on the physical object.
Here is the link to the manual: https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/%E7%87%83%E6%B2%B9%E9%AB%98%E5%8E%8B%E6%B8%85%E6%B4%97%E6%9C%BA170D-180D%E9%80%9A%E7%94%A8%E8%AF%B4%E6%98%8E%E4%B9%A6-20230308_1679475491838.pdf.