- A350 Procedures To Reset Fault or Faults
First try EPDS AND LIGHTS TEST IN SYSTEMS REPORT TEST/24/EPDS AND LIGHTS SIDE 2. Check to see if test will restore flow bars TR2 and BAT2 to the DC BUS. If not connected, Completely remove Power From Aircraft, No External or APU with batteries off. It is best to power down the aircraft and pull circuit breakers as long as possible up to 30 minutes if time permits.
YELLOW PUMP INOP, RNP NAV DEGRADED BATTERY 2 AND TRU 2 NOT CONNECTED BUS. ELEC AC PAGE MAY OR WILL SHOW XX'S ON THE AC TIE BUSSES. AND THE SRPU 2A/2B OR ENMU 2A/2B WILL HAVE AMBER OR RED FAULT LED'S ON.
SRPU2A/2B ENMU2A/2B OFFLINE.
CYCLE POWER WITH BATTERIES OFF. IF NO HELP PERFORM THIS COLDSTART PROCEDURE.
Circuit breakers or SSPC to reset:
ORDER DESIGNATION CB LOCATION 1 3203FP 5AF06 CBP1 2 3206FP 6AB07 CBP2 3 3201FP 3HK03 EPDC1 4 2003PB 3HZ08 EPDC1 5 1001PM 1KZ02 EPDC1 6 1002PM 2KZ02 EPDC2 7 3100FP 2KL05 EPDC2 8 3114FP 4AF07 EPDC2 9 3204FP 4HJ01 EPDC2 10 2004PB 4HZ08 EPDC2
OMT SYSTEM REPORT TESTS:
Cold Start will clear the RNP AR Degraded, Yellow Pump Inop, and the Green DC flow bar on the DC electrics page blank between the battery 2 and TR. Check the SARU, and ENMU for LEDS
Fault Detected By:
FCGS And CPIOM
Results of power up test or reset:
Fail: DISPATCH MESSAGE fault remains.
Must Power Aircraft Completely down and Pull CB'. Start APU and Power Aircraft. It way take up to 30 minutes power down to return the aircraft to normal configuration.
When IFE has had multiple legs without a power down cycle, smoke lav detect dispatch message has been know to occur. Coldstart will clear this fault.