Possible reasons for feeling unsmooth during running: checking whether the treadmill running belt is too loose; checking whether the multi-groove belt is too loose; solving method: adjust according to instructions; adjust the speed to the lowest, force the foot on the running belt, observe the multi-groove belt tightness, adjust the front drum to add lubricant on the treadmill to lubricate the treadmill. After using for a period of time, the possible causes of feeling vibration are more and more: check the groove of multi-groove belt; check whether the vibration is generated by motor; check whether the rotation of the drum wheel is abnormal before and after; solve the problem: remove the groove debris; need to replace; replace the drum. After using for a period of time, there will be abnormal sound - possible reasons: 1. Check whether the roller culture is damaged before and after use; Check whether the motor carbon brush wears unevenly; Check whether the fixed screw of the cover is loose; Wheel contact speed sensor; Running belt inner layer running into foreign body; Solution: Replace the roller; Replace the carbon brush; Tighten the fixed screw; Adjust the speed sensor to the appropriate position; (3) Adjust the speed sensor to the appropriate position; Foreign body removal. About 5-10 seconds after start-up, the electronic meter shows the possible reasons for E-1: check whether the connection of speed induction wire is not in good contact or loose; the distance between induction and front wheel magnet is too far to be sensed, so the control panel or electronic meter should be replaced. If the contact is not good, the speed sensor should be replaced; normal 2-3 inches; clockwise adjust the drive. SPED-VR on board, repeat start and adjust to appropriate position. EXDO Aikodo Group Co., Ltd. is an international professional sports fitness equipment group, which integrates research, development, manufacture, marketing and brand operation of fitness equipment. It is engaged in the production of treadmills and household treadmills. It is a professional treadmill agent in China. It is the first choice manufacturer for treadmills to join in.