TC reported smoke external at Front M1 car. SM(AMK) checked, no sign of smoke or fire at Front M1 ca r. Rear T417 line clear into BSH NB, no abnormalities. ~~~~~ TC reported smoke external at Front M1 (1570) car. SM(AMK) checked, no sign of smoke or fire at Front M1 car. Rear T417 line clear into BSH NB ,no abnormalities. CE: 1570 smoke external alarm reset ok n fault cleared  1570 FC 721x1, 1570 smoke detector unit terminal corrosion aat no.2 end. Replaced, Function test ok. Notif CSC:2501412 Done by Haikel/Zulfikri 45105