Train doors at rear DT and rear M1 carswere not proven closed. TC opened and closed train doors onc e to clear fault. Fault recurred at CNG1. TC opened and clos ed once to clear fault. Staff(JUR) checked and confirmed rea ~~~~~ * ,N * 1. Fault confirmed / Fault cannot be duplicated Fault unable to be duplicated in depot. 2. What was found from ER / Fault trace? TIMS showed 3623 FC953 Saloon door B2 Operation Timeout: CLE occured 2 times. 3. Troubleshooting Details These are 5 identified possible causal factors based on FTA: A. Door locking device (DLD) faulty Confirmed (3623) Checked ER and found that 3623 B2 Door had similar fault on 16.05.24. Preventively swapped DLD from B2 to A2 door - fault transferred. B. External Obstruction Likely (1623) Back at depot checked 1623 no fault found. Doors able to cycle with no issues. Postulate FOD dislodge when TC cycle door. C. Internal Obstruction Unlikely Weather strips were in good condition.    No door rubbing marks found. No abnormal sounds were heard during cyclic test. D. Door rollers faulty Unlikely Manual test - satis, door operation smooth. E. Door motor faulty Unlikely Door motor was able to open and close doors with no abnormalities nor unusual sounds. Door motoring current observed no abnormalities. 4. Rectification Details * Replaced the faulty Door locking device (DLD) for A2 Door. * ?Checked 1623 and 3623 doors operation normal, check door guide. * Cleared guide rail of any FOD and cleaned both guide rail and J-rail. * Door push/pull resistance ok. * Door operation was smooth without any wobbling. * Cyclic test ok; DIR and DMI able to light and extinguish accordingly. * Door static test timing within criteria. * Door mating strip distance - satis. * DIRBS at both cabs sealed. DONE BY:LAI/SYUHAIDAH/RIDZUAN 20.05.2024 * ,N * 1. Fault confirmed / Fault cannot be duplicated Fault unable to be duplicated in depot. 2. What was found from ER / Fault trace? TIMS showed 3623 FC953 Saloon door B2 Operation Timeout: CLE occured 2 times. 3. Troubleshooting Details These are 5 identified possible causal factors based on FTA: A. Door locking device (DLD) faulty Confirmed (3623) Checked ER and found that 3623 B2 Door had similar fault on 16.05.24. Preventively swapped DLD from B2 to A2 door - fault transferred. B. External Obstruction Likely (1623) Back at depot checked 1623 no fault found. Doors able to cycle with no issues. Postulate FOD dislodge when TC cycle door. C. Internal Obstruction Unlikely Weather strips were in good condition. No door rubbing marks found. No abnormal sounds were heard during cyclic test. D. Door rollers faulty Unlikely Manual test - satis, door operation smooth. E. Door motor faulty Unlikely Door motor was able to open and close doors with no abnormalities nor unusual sounds. Door motoring current observed no abnormalities. 4. Rectification Details * Replaced the faulty Door locking device (DLD) for A2 Door. * ?Checked 1623 and 3623 doors operation normal, check door guide. * Cleared guide rail of any FOD and cleaned both guide rail and J-rail. * Door push/pull resistance ok. * Door operation was smooth without any wobbling. * Cyclic test ok; DIR and DMI able to light and extinguish accordingly.    * Door static test timing within criteria. * Door mating strip distance - satis. * DIRBS at both cabs sealed. DONE BY:RIDZUAN 21.05.2024