TC reported car 3670 A1 door not provenclosed. TC opened and closed door manually to clear fault. T C reported fault recurred MSL1. TC later reported affected t rain door slow in opening. Staff(KRJ) boarded train and ho ~~~~~ TC reported car 3670 A1 door not proven     Check and found A1 door LHS both roller bearing worn.Replaced and all door static tested ok. Done by Sanip/Koh. 03/01/22