What was found
AFTER PARKING AT GATE IN RJTT, ALL CABIN DOORS DISPLAYED FLASHINNG RED LIGHTS, CABIN PRESSURE WAS VERIFIED AT ZERO. OUTFLOW VALVES FULL OPEN. CORRECTIVE ACTION: CONFIRMED CABIN DELTA P & CABIN ALT 0. NO ECAM MSG D/M & STATUS. PERFORMED BITE CPCS TEST OK & COND CHECK DOOR PRESS WARNING SW NORMAL, CLEANED PRESS SW ORIFICE & ITEM OK FOR SERVICE, PER A350 AMM A350-A-21-31.