Train encountered power fault at car 2663 while arriving station. Reset at TWR1, TCR1 and GCL1 to noavail. Performance was normal. Stock-changeover was arrange d at PSR. Train encountered power fault at car 2663 while ar ~~~~~ * ,N * FC 820, 821 - Inverter 1 and 2 failed to deliver power, intermittent clear. Power fault unable to duplicate in depot. Performed limited movement - train jerky. Checked and found Y-2 fibre optic connector not connected properly. Cleaned and reconnected Y-2 connector. Perform limited movement and depot shunt - ok. DONE BY:AZLI 21.05.2024