TC reported TIMS show smoke external noparticular car. Staff(KTB) checked, no abnormalities. Rear T 201 line clear, no abnormalities. TC reported TIMS show smok e external no particular car. Staff(KTB) checked, no abnorma ~~~~~ #3570 smoke detector unit replaced and tested ok. Notification: 2565348 Done by: Sateesh and Gopal