Train doors at car 3630 were not provenclosed. TC recycled train doors once - ok. Staff(GCL) checke d and confirmed no train doors abnormalities. Fault did not recur at subsequent stations. Train doors at car 3630 were n ~~~~~ * ,N * CHECK DOOR GUIDE RAIL NO FOD. OPEN/CLOSED DOOR MULTIPLE TIME NO FAULT OCCUR. A1 DOOR 3630 CHECK FUNCTION LEFT LEAF FRICTION SUSPECT ROLLER FAULTY. OP20 RAISED DONE BY:ZILKILFI 22.08.2023 * ,N * 'Door function check found 3630 A1 left door wobbling during operation Further check found door roller (LHS) delaminated Replaced door roller and door function checked ok DONE BY: AZLI/FAIZAL/IDRIS 22.08.2023