Operational Test of DFDR

TASK 31-39-00-710-809-A
Operational Test of DFDR

FIN: 1TU ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. 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 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 31-39-00-710-062-A ** ON A/C NOT FOR ALL

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) Energize the CFDS (Ref. AMM TASK 31-32-00-860-008)

Subtask 31-39-00-865-063-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	RCDR/DFDR	7TU	K16
** ON A/C NOT FOR ALL
121VU	RCDR/ACCLRM	9TU	K18
121VU	AIDS & RCDR/FDIMU	5TV	K15
** ON A/C NOT FOR ALL
121VU	RCDR2 CVR&FDR	42TU	K16
** ON A/C NOT FOR ALL
121VU	RCDR/ACCLRM	9TU	K41
121VU	RCDR2 CVR&FDR	42TU	K39
121VU	AIDS & RCDR/FDIMU	5TV	K38

4. Procedure
Subtask 31-39-00-710-063-A ** ON A/C NOT FOR ALL

A. Operational test of the DFDR

ACTION	RESULT
1.On control panel 21VU:	On control panel 21VU:
Press the GND/CTL button.	The blue indicator light "ON" comes on.
2.On panel 121VU:	On the ECAM display:
Open circuit breaker DFDR 7TU (K16).	The "RECORDER DFDR FAULT" indication comes on.
Close circuit breaker DFDR 7TU (K16).	The "RECORDER DFDR FAULT" indication goes off.
3.On control panel 21VU:	On control panel 21VU:
Press the GND/CTL button.	The blue indicator light "ON" goes off.

5. Close-up
Subtask 31-39-00-710-064-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Put the aircraft back to its initial configuration.
(2) De-energize the CFDS
(Ref. AMM TASK 31-32-00-860-008)
(3) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002)
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.04.01 00:36:55 UTC