TIMS showed Smoke Internal at car 2520.Staff(YCK) checked and confirmed no signs of smoke / fire / burning smell on exterior or interior of train. Train was es corted to terminal station. ~~~~~ TIMS showed Smoke Internal at car 2520.Staff(YCK) checked and confirmed no signs of smoke / fire /burning smell on exterior or interior of train. Train was escorted to terminal station. CE:T230(3519) RM2 car 2520 check n found smoke internal pre-alarm fault. Check no abnormality, reset fault cleared.  2520 FC 720, SDR1 Alarm( fire control panel) feedback by CE. 2520 NO.1 END check no abnormality on the smoke detector unit. Preventive C/o smoke detector unit due to fault. Function test ok. To monitor 2520 Smoke detector unit Notif csc:2527050 Done by:Saini/Asruddin/Haslan 45195