Converter train fault at rear M1 car. Unable to reset. TC also reported fire internal fault at rear M1 car. Converter train fault at rear M1 car. Unable to rese t. TC also reported fire internal fault at rear M1 car. ~~~~~ #1540 Fire Internal Alarm Reset.Fault Cleared.#1540 No Converter Fault.29/03/23 Check #1540 was no converter fault.Check both a/c CCU motor and condenser fan motor ok.Tims no observed any APS fault related FC.Aps equipment check no abnormalities and CCD shoe and fuse check ok.#1540 smoke unternal happen once and self cleared.Further check both end internal smoke detector no obsertved any water ingress or corrosion,use compress air to clean up and function test ok. Checked by Sanip/Koh/Rizman. 29/03/23    To swap 1540 APS controller APS controller swap #1540 to #2540.Conduct no fault/power test ok.Monitor ok,no fault occurred. #1540>#2540 s/n: 583R4-3H #2540>#1540 s/n: 110R6000-44 Done by Saini/Zulq. 29/03/23