TC reported smoke external at car 1514.TIMS showed Smoke Internal at car 1514. Staff(YCK) checked a nd confirmed no signs of smoke / fire / burning smell on ext erior or interior of train. ~~~~~ 1514 TC reported smoke external. TIMS showed Smoke Internal at 1514. Staff(YCK) checked and confirmed no signs of smoke/fire/burning smell on exterior or interior of train. CE :1514 is smoke external. Reset fault cleared. No abnormality found. Is SDR 11  1514 FC 721 (Smoke External) Check external smoke detector no signs of water seepage, cable gland ok, plaseal ok. Cleaned smoke detector. Found no gasket on terminal side. Swapped SDR11 from #1514 to #3514. OPS 20 raised to c/o external smoke detector.  Sarma/Alan/Lee PT/Kamarul 45409 BSD: To replace #1514 External Smoke Detector