TC reported smoke external at front DT car. Staff(RFP) checked and confirmed no abnormality at frontDT car. Rear train(316) line cleared all normal. ~~~~~ car #3516 reported smoke external at front dt.checked found smoke detector external water ingress.replaced #3516 external smoke detector.security/function test ok.hairul/achmad 25.01.2023 s/n new KSFSD-03     OLD -  NOTIFICATION 2455723