TC reported smoke internal at Front M1.Staff (KAL) checked and confirmed no abnormalities found. ~~~~~ 1550-Fault not duplicated. Checked TIMS FC720. Checked AC and End Panels for signs of burns-Ok. Blow clean internal smoke detector and pipings. Monitored during depot shunting & Further monitor at siding for few hours. Fault did not recur.    Bassant.  25.08.2022.