Operational Test of the System Data Acquisition Concentrator (SDAC)

TASK 31-50-00-710-003-A
Operational Test of the System Data Acquisition Concentrator (SDAC)

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 amber visual and audio cautions are operated by a SDAC.
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 31-60-00-860-001-A	EIS Start Procedure

3. Job Set-up
Subtask 31-50-00-860-054-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)

Subtask 31-50-00-865-055-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
121VU	EIS/SDAC1 AND 2/BUS2/28VDC	44WV	P03
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 31-50-00-710-053-A

A. Test

ACTION	RESULT
1.On the panel 121VU :
open the circuit breaker 2WV .	on the upper ECAM DU: * the FWS SDAC2 FAULT indication comes into view.
open the circuit breaker 44WV.	* the ELEC DC BUS2 FAULT indication comes into view. on the lower ECAM display unit: * the ELEC page comes into view. you hear the single chime. on the glareshield : * the CAPT and F/O MASTER CAUT lights come on.
2.On the glareshield :
push then release the CAPT or F/O MASTER CAUT pushbutton switch.	the CAPT and F/O MASTER CAUT lights go off.
3.On the panel 121VU :
close the circuit breaker 44WV.	on the upper ECAM display unit: * the warning message goes out of view. on the lower ECAM display unit: * the ELEC page goes out of view and the DOOR/OXY page comes into view.
close the circuit breaker 2WV.	On the upper ECAM DU: * FWS SDAC2 FAULT goes out of view. after a few seconds, other cautions can come into view.
4.On the ECAM control panel:
push the CLR key to reset all warnings.	on the upper ECAM DU: * the MEMO indication comes into view. on the lower ECAM DU: * the DOOR page comes into view.
5.On the panel 49VU :
open the circuit breaker 3WV .	on the upper ECAM DU: * FWS SDAC1 FAULT comes into view.
6.On the panel 121VU :
open the circuit breaker 44WV.	make sure that the cautions given in paragraph 1 come into view.
close the circuit breaker 44WV.	the cautions given before go out of view.
7.On the panel 49VU :
close the circuit breaker 3WV .	On the upper ECAM DU: * FWS SDAC1 FAULT goes out of view.

5. Close-up
Subtask 31-50-00-860-055-A

A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
(3) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 07:50:44 UTC