Operational Test of the Circuit Breaker Monitoring System

TASK 31-50-00-710-005-A
Operational Test of the Circuit Breaker Monitoring 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 warnings related to the monitoring of the circuit breakers show correctly on the upper ECAM display.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822

C. 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 31-50-00-860-058-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 (ECAM, F/O PFD and F/O ND only). (Ref. AMM TASK 31-60-00-860-001)

Subtask 31-50-00-010-052-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(2) Open the access door 822.
(3) On the battery power center 105VU:

loosen the two screws and remove the protective cover.

(4) On the AC/DC Emergency power center 106VU:

loosen the five screws and remove the protective cover.

Subtask 31-50-00-865-056-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	NAV/MMR/1	42RT1	G12
** ON A/C NOT FOR ALL
49VU	NAV/ILS/1	1RT1	G12
** ON A/C ALL
105VU	ELEC/BAT BUS/REF/BCL2	8PB2	J02
106VU	ESS TR/SPLY	4PE	C01
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	K09
** ON A/C ALL
121VU	EIS/ND/F/O	12WT2	R04
** ON A/C NOT FOR ALL
121VU	COM NAV/ILS/2	1RT2	K09
** ON A/C NOT FOR ALL
121VU	COM NAV/MMR/2	42RT2	L07
** ON A/C NOT FOR ALL
122VU	DOORS/PAX/MONG	1MQ	T13
** ON A/C ALL
122VU	LIGHTING/CABIN/EMER/LT	3WL	V07
122VU	ANTI ICE/WIPER/CAPT	4DB1	X12
** ON A/C NOT FOR ALL
122VU	DOORS CKPT LOCK	1MQ	T13
122VU	COCKPIT DOOR LOCK SYSTEM	1MQ	T13

4. Procedure
Subtask 31-50-00-710-055-A ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On the overhead panel 49VU :
open the circuit breaker 1RT1.	on the upper ECAM display unit : * The NAV ILS1 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED ON OVHD PANEL indication comes into view. you can hear the single chime
close the circuit breaker 1RT1.	the warnings given before go out of view.
2.On the rear C/B panel 122VU :
open the circuit breaker 4DB1.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL W-Z indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4DB1.	the warnings given before go out of view.
open the circuit breaker 3WL.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 3WL.	the warnings given before go out of view.
3.On the rear C/B panel 121VU :
open the circuit breaker 12WT2.	the F/O ND stops. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL N-R indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 12WT2.	after not many seconds, the ND image comes into view. the warning given before go out of view.
open the circuit breaker 1RT2.	on the upper ECAM display unit : * The NAV ILS2 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL J-M indication comes into view. you can hear the single chime
close the circuit breaker 1RT2.	the warnings given before go out of view.
4.In the lateral left section of the Avionics Compartment, on the AC/DC emergency power center 106VU :
open the circuit breaker 4PE.	on the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED L ELEC BAY indication comes into view. on the glareshield * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4PE.	the warnings given before go out of view.
5.In the Avionics Compartment, on the battery power center 105VU : open the circuit breaker 8PB2.	On the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED R ELEC BAY indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 8PB2.	the warnings given before go out of view.

Subtask 31-50-00-710-055-B ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On the overhead panel 49VU :
open the circuit breaker 1RT1.	on the upper ECAM display unit : * The NAV ILS1 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED ON OVHD PANEL indication comes into view. you can hear the single chime
close the circuit breaker 1RT1.	the warnings given before go out of view.
2.On the rear C/B panel 122VU :
open the circuit breaker 4DB1.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL W-Z indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4DB1.	the warnings given before go out of view.
open the circuit breaker 3WL.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 3WL.	the warnings given before go out of view.
open the circuit breaker 1MQ.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 1MQ.	the warnings given before go out of view.
3.On the rear C/B panel 121VU :
open the circuit breaker 12WT2.	the F/O ND stops. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL N-R indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 12WT2.	after not many seconds, the ND image comes into view. the warning given before go out of view.
open the circuit breaker 1RT2.	on the upper ECAM display unit : * The NAV ILS2 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL J-M indication comes into view. you can hear the single chime
close the circuit breaker 1RT2.	the warnings given before go out of view.
4.In the lateral left section of the Avionics Compartment, on the AC/DC emergency power center 106VU :
open the circuit breaker 4PE.	on the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED L ELEC BAY indication comes into view. on the glareshield * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4PE.	the warnings given before go out of view.
5.In the Avionics Compartment, on the battery power center 105VU : open the circuit breaker 8PB2.	On the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED R ELEC BAY indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 8PB2.	the warnings given before go out of view.

Subtask 31-50-00-710-055-C ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On the overhead panel 49VU :
open the circuit breaker 42RT1.	on the upper ECAM display unit : * The NAV ILS1 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED ON OVHD PANEL indication comes into view. you can hear the single chime
close the circuit breaker 42RT1.	the warnings given before go out of view.
2.On the rear C/B panel 122VU :
open the circuit breaker 4DB1.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL W-Z indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4DB1.	the warnings given before go out of view.
open the circuit breaker 3WL.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 3WL.	the warnings given before go out of view.
3.On the rear C/B panel 121VU :
open the circuit breaker 12WT2.	the F/O ND stops. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL N-R indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 12WT2.	after not many seconds, the ND image comes into view. the warning given before go out of view.
open the circuit breaker 42RT2.	on the upper ECAM display unit : * The NAV ILS2 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL J-M indication comes into view. you can hear the single chime
close the circuit breaker 42RT2.	the warnings given before go out of view.
4.In the lateral left section of the Avionics Compartment, on the AC/DC emergency power center 106VU :
open the circuit breaker 4PE.	on the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED L ELEC BAY indication comes into view. on the glareshield * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4PE.	the warnings given before go out of view.
5.In the Avionics Compartment, on the battery power center 105VU : open the circuit breaker 8PB2.	On the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED R ELEC BAY indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 8PB2.	the warnings given before go out of view.

Subtask 31-50-00-710-055-D ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.On the overhead panel 49VU :
open the circuit breaker 42RT1.	on the upper ECAM display unit : * The NAV ILS1 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED ON OVHD PANEL indication comes into view. you can hear the single chime
close the circuit breaker 42RT1.	the warnings given before go out of view.
2.On the rear C/B panel 122VU :
open the circuit breaker 4DB1.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL W-Z indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4DB1.	the warnings given before go out of view.
open the circuit breaker 3WL.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 3WL.	the warnings given before go out of view.
open the circuit breaker 1MQ.	on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL S-V indication comes into view on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 1MQ.	the warnings given before go out of view.
3.On the rear C/B panel 121VU :
open the circuit breaker 12WT2.	the F/O ND stops. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PNL N-R indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 12WT2.	after not many seconds, the ND image comes into view. the warning given before go out of view.
open the circuit breaker 42RT2.	on the upper ECAM display unit : * The NAV ILS2 FAULT indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime. on the upper ECAM display unit, after about 60 seconds : * The C/B TRIPPED REAR PANEL J-M indication comes into view. you can hear the single chime
close the circuit breaker 42RT2.	the warnings given before go out of view.
4.In the lateral left section of the Avionics Compartment, on the AC/DC emergency power center 106VU :
open the circuit breaker 4PE.	on the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED L ELEC BAY indication comes into view. on the glareshield * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 4PE.	the warnings given before go out of view.
5.In the Avionics Compartment, on the battery power center 105VU : open the circuit breaker 8PB2.	On the upper ECAM display unit, after 60 seconds : * The C/B TRIPPED R ELEC BAY indication comes into view. on the glareshield : * The MASTER CAUT lights come on. you can hear the single chime.
close the circuit breaker 8PB2.	the warnings given before go out of view.

5. Close-up
Subtask 31-50-00-860-059-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.
On the panel 500VU, set the F/O PFD and ND 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.

Subtask 31-50-00-410-050-A

B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Thighten the two screws.
(3) Install the protective cover on the AC/DC Emergency power center 106VU.
(4) Thighten the five screws.
(5) Close the access door 822.
(6) Remove the access platform.

[Rev.10 from 2021] 2026.04.01 00:37:09 UTC