Ground Scanning of the Central Warning System

TASK 31-50-00-710-001-A
Ground Scanning of the Central Warning System

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

ZONE: 210

1. Reason for the Job
Make sure that the FWC 1 and 2, the SDAC 1 and 2 and the ECP operate correctly.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-008-A	Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 31-50-00-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001)
(3) On the maintenance panel 50VU, release the ENG/FADEC GND PWR 1 & 2 pushbutton switches. The legend ON is displayed.
(4) Do the ADIRS start procedure. (Ref. AMM TASK 34-10-00-860-002)
(5) On one MCDU, get the SYSTEM REPORT/TEST INST menu page item. (Ref. AMM TASK 31-32-00-860-008)

Subtask 31-50-00-865-053-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	SDAC/1/SPLY	3WV	F04
49VU	SDAC/2/26VAC SYNC/AC ESS BUS	6WV	F03
49VU	SDAC/1/26VAC SYNC/AC ESS BUS	5WV	F02
49VU	FWS/FWC1/SPLY	3WW	F01
121VU	EIS/FWC2/SPLY	2WW	Q07
121VU	EIS/SDAC/2/SPLY	2WV	Q06
121VU	EIS/SDAC/1/BUS2/26VAC SYNC AC	7WV	Q03
121VU	EIS/SDAC/2/BUS2/26VAC SYNC AC	8WV	Q02

4. Procedure
Subtask 31-50-00-710-051-B

A. Test

ACTION	RESULT
1.On one MCDU, on the INST menu page:
push the line key adjacent to the ECAM 1 indication.	the menu of the ECAM 1 page comes into view after a few seconds.
set the GROUND SCANNING function.	make sure that no failure is present by observing: Either a NO FAILURE message is displayed or no message is displayed followed by the ATA ref. 31-XX-XX (where X is a digit to be disregarded)
2.On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.

5. Close-up
Subtask 31-50-00-860-051-A

A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the LOWER DISPLAY and UPPER DISPLAY potentiometers to OFF.
On the maintenance panel 50VU, push the ENG/FADEC GND PWR 1 & 2 pushbutton switches, the legend ON comes OFF.
(2) Do the ADIRS Stop Procedure (Ref. AMM TASK 34-10-00-860-005).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
(4) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 00:37:05 UTC