Test of the Flight Data Interface and Management Unit (FDIMU)

TASK 31-36-00-740-012-A
Test of the Flight Data Interface and Management Unit (FDIMU)

ZONE: 120
ZONE: 210
FIN: 10TV ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT
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)

3. Job Set-up
Subtask 31-36-00-860-084-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) Make sure that the aircraft is in Ground configuration (Landing Gear compressed and all Engines stopped).
(3) On overhead maintenance panel 50VU, push the FADEC GND PWR ENG1 and ENG2 pushbutton-switches (on the pushbutton switch, the ON legend comes on).

Subtask 31-36-00-865-088-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
49VU	AUTO FLT/MCDU/1	11CA1	B01
** ON A/C NOT FOR ALL
49VU	AUTO FLT/MCDU/1	11CA1	H07
** ON A/C NOT FOR ALL
121VU	AIDS & RCDR/FDIMU	5TV	K15
** ON A/C NOT FOR ALL
121VU	RCDR/DFDR	7TU	K16
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J18
121VU	CFDS/CFDIU/BACK/UP	8TW	J17
121VU	RCDR/ACCLRM	9TU	K18
** ON A/C NOT FOR ALL
121VU	AUTO FLT/MCDU/2	11CA2	N20
** ON A/C NOT FOR ALL
121VU	FDIU	8TU	K17
121VU	AIDS/DMU	4TV	K15
** ON A/C NOT FOR ALL
121VU	RCDR2 CVR&FDR	42TU	K16
** ON A/C NOT FOR ALL
121VU	CFDS/CFDIU/SPLY	2TW	J41
121VU	CFDS/CFDIU/BACK/UP	8TW	J40
121VU	RCDR/ACCLRM	9TU	K41
121VU	RCDR2 CVR&FDR	42TU	K39
121VU	AIDS & RCDR/FDIMU	5TV	K38

4. Procedure
Subtask 31-36-00-740-070-A ** ON A/C NOT FOR ALL

A. Do the FDIMU Fault Monitoring Test (AIDS Part)
(1) On the overhead panel, on the ADIRS CDU:

Set the OFF/NAV/ATT selector switches related to IR1, IR2 and IR3 to NAV position.
Make sure that ADR1, ADR2 and ADR3 pushbutton switches are in the ON position (with the FAULT and OFF legends off).

NOTE: If different CFDIU standard is installed, the MCDU display will show DMU or AIDS related to the used standard.

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the line key adjacent to CFDS indication.	The CFDS page comes into view.
Push the line key adjacent to SYSTEM REPORT/TEST indication.	The SYSTEM REPORT/TEST page comes into view.
Push the line key adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page comes into view.
Push the line key adjacent to DMU/AIDS indication.	The AIDS page comes into view.
Push the line key adjacent to LRU IDENT indication.	The AIDS LRU IDENTIFICATION page comes into view. The part number of the FDIMU, System Software and Setup Database shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to GND SCANNING indication.	The AIDS GROUND SCANNING page comes into view. The message NO FAULT DETECTED shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to TEST indication.	The AIDS TEST page comes into view.
Push the line key adjacent to DMU POWER UP TEST indication.	The message TEST IN PROGRESS xxS (xxS is the elapsed time in seconds) shows for a short time. The AIDS TEST result page comes into view and shows the message TEST OK.
Push the line key adjacent to RETURN indication.	The AIDS TEST page comes into view.
Push the line key adjacent to DMU BATTERY TEST indication.	The message TEST IN PROGRESS xxS (xxS is the elapsed time in seconds) shows for short time. The AIDS TEST result page comes into view and shows the message BATTERY OK.
Push the line key adjacent to RETURN indication until the CFDS MENU page comes into view.	The CFDS page comes into view.

Subtask 31-36-00-740-070-B ** ON A/C NOT FOR ALL

A. Do the FDIMU Fault Monitoring Test (AIDS Part)
(1) On the overhead panel, on the ADIRS CDU:

Set the OFF/NAV/ATT selector switches related to IR1, IR2 and IR3 to NAV position.
Make sure that ADR1, ADR2 and ADR3 pushbutton switches are in the ON position (with the FAULT and OFF legends off).

NOTE: If different CFDIU standard is installed, the MCDU display will show DMU or AIDS related to the used standard.

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the line key adjacent to CFDS indication.	The CFDS page comes into view.
Push the line key adjacent to SYSTEM REPORT/TEST indication.	The SYSTEM REPORT/TEST page comes into view.
Push the line key adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page comes into view.
Push the line key adjacent to DMU/AIDS indication.	The AIDS page comes into view.
Push the line key adjacent to LRU IDENT indication.	The AIDS LRU IDENTIFICATION page comes into view. The part number (P/N) and the Serial Number (S/N) of the FDIMU shows. The actual loaded Software Number (S/W) shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to GND SCANNING indication.	The AIDS GROUND SCANNING page comes into view. The message NO FAULT DETECTED shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to TEST indication.	The AIDS TEST page comes into view.
Push the line key adjacent to AIDS TEST indication.	The message TEST IN PROGRESS xxS (xxS represents duration in seconds) shows for a short time. The AIDS TEST result page comes into view and shows the message TEST OK.
Push the line key adjacent to RETURN indication until the CFDS MENU page comes into view.	The CFDS page comes into view.

Subtask 31-36-00-740-070-Q

A. Do the FDIMU Fault Monitoring Test (AIDS Part)
(1) On the overhead panel, on the ADIRS CDU:

Set the OFF/NAV/ATT selector switches related to IR1, IR2 and IR3 to NAV position.
Make sure that ADR1, ADR2 and ADR3 pushbutton switches are in the ON position (with the FAULT and OFF legends off).

NOTE: If different CFDIU standard is installed, the MCDU display will show DMU or AIDS related to the used standard.

ACTION	RESULT
On the MCDU:	On the MCDU display:
Push the line key adjacent to CFDS indication.	The CFDS page comes into view.
Push the line key adjacent to SYSTEM REPORT/TEST indication.	The SYSTEM REPORT/TEST page comes into view.
Push the line key adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page comes into view.
Push the line key adjacent to DMU/AIDS indication.	The AIDS page comes into view.
Push the line key adjacent to LRU IDENT indication.	The AIDS LRU IDENTIFICATION page comes into view. The part number of the FDIMU, System Software, ADC configuration load A and load B part numbers, load B version and date shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to GND SCANNING indication.	The AIDS GROUND SCANNING page comes into view. The message NO FAULT DETECTED shows.
Push the line key adjacent to RETURN indication.	The AIDS page comes into view.
Push the line key adjacent to TEST indication.	The AIDS TEST page comes into view. The message TEST IN PROGRESS xxS (xxS is the elapsed time in seconds) shows for a short time. The AIDS TEST result page comes into view and shows the message TEST OK.
Push the line key adjacent to RETURN indication.	The MAIN MENU page comes into view.
Push the line key adjacent to RETURN indication until the CFDS MENU page comes into view.	The CFDS page comes into view.

Subtask 31-36-00-740-071-A ** ON A/C NOT FOR ALL

B. FDIMU Fault Monitoring Test (DFDRS Part)

NOTE: If different CFDIU standard is installed, the MCDU display will shows FDIU or DFDRS related to the used standard.

ACTION	RESULT
On cockpit overhead-panel 21VU:	On cockpit overhead-panel 21VU:
Push the RCDR GND CTL button.	The blue-light indicator ON in the RCDR GND CTL button comes on.
On the MCDU:	On the MCDU display:
Push the line key adjacent to CFDS indication.	The CFDS page comes into view.
Push the line key adjacent to SYSTEM REPORT/STATUS indication.	The SYSTEM REPORT/TEST page comes into view.
Push the line key adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page comes into view.
Push the line key adjacent to FDIU/DFDRS indication.	The DFDRS page comes into view.
Push the line key adjacent to LRU IDENT indication.	The DFDRS LRU IDENTIFICATION page comes into view. The part number of the FDIMU and DFDRS Software shows.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to GND SCANNING indication.	The DFDRS GROUND SCANNING page comes into view. The message NO FAULT DETECTED shows.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to TEST indication.	The DFDRS TEST page comes into view.
Push the line key adjacent to START TEST indication.	The message TEST IN PROGRESS shows for a short time. The message TEST OK shows.
Push the line key adjacent to TEST CLOSE UP indication.	The message CLOSE UP CONDITION SELECT RCDR GND CTL OFF shows. NOTE: Do not push the RCDR GND CTL OFF button. Continue with the next step.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to SPECIFIC DATA indication.	The DFDRS SPECIFIC DATA page comes into view.
Push the line key adjacent to FDIU INFORMATIONS indication.	The DFDRS FDIU INFORMATIONS page comes into view. The subsequent data shows: STATUS OF DFDR : OK PLAY BACK RECEIVED REC : xxx FLEET : xxxx A/C TYPE ID : xxxxxx A/C TAIL NO : x-xxxx NOTE: One x is one alphanumeric character.
Push the line key adjacent to RETURN indication until the CFDS MENU page comes into view.	The CFDS page comes into view.
Push the MCDU MENU mode key.	The MCDU MENU page shows.
On cockpit overhead-panel 21VU:	On cockpit overhead-panel 21VU:
Push the RCDR GND CTL button.	The blue-light indicator ON in the RCDR GND CTL button goes off.

Subtask 31-36-00-740-071-CS ** ON A/C NOT FOR ALL

B. FDIMU Fault Monitoring Test (DFDRS Part)

NOTE: If different CFDIU standard is installed, the MCDU display will show FDIU or DFDRS related to the used standard.

ACTION	RESULT
On the Cockpit Overhead Panel 21VU:	On the Cockpit Overhead Panel 21VU:
Push the RCDR GND CTL button.	The blue light indicator ON in the RCDR GND CTL button comes on.
On the MCDU:	On the MCDU display:
Push the LSK adjacent to CFDS indication.	The CFDS page shows.
Push the Line Select Key (LSK) adjacent to SYSTEM REPORT/TEST indication.	The SYSTEM REPORT/TEST page shows.
Push the LSK adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page shows.
Push the LSK adjacent to FDIU/DFDRS indication.	The DFDRS page shows.
Push the LSK adjacent to LRU IDENT indication.	The DFDRS LRU IDENTIFICATION page shows. The Partnumber of the FDIMU and DFDRS Software shows.
Push the LSK adjacent to RETURN indication.	The DFDRS page shows.
Push the LSK adjacent to GND SCANNING indication.	The DFDRS GROUND SCANNING page shows. The message NO FAULT DETECTED shows.
Push the LSK adjacent to RETURN indication.	The DFDRS page shows.
Push the LSK adjacent to TEST indication.	The DFDRS TEST page shows.
Push the LSK to the START TEST indication.	The message TEST IN PROGRESS xxS (xxS represents duration in seconds) shows for a short time. The DFDRS TEST result page is shown with the message TEST OK.
Push the LSK adjacent to TEST CLOSE UP indication.	The message CLOSE UP CONDITION SELECT RCDR GND CTL OFF shows. NOTE: Do not push the RCDR GND CTL OFF button. Continue with the next step.
On the MCDU:	On the MCDU display:
Push the LSK adjacent to RETURN indication.	The DFDRS page shows.
Push the LSK adjacent to DFDRS INFORMATION indication.	The DFDRS INFORMATIONS page comes into view. The data as follow show: STATUS DFDR : PLAY BACK RECEIVED REC-VERSION: xxx REC-SPEED: xxx A/C TYPE ID : xxxxxx ENGINE TYPE: xxx A/C TAIL NO : x-xxxx FLEET : xxxx . NOTE: One x represents one alphanumeric character.
Push the LSK adjacent to the RETURN indication until the CFDS MENU page shows.	The CFDS page shows.
Push the MCDU MENU mode key.	The MCDU MENU page shows.
On the Cockpit Overhead Panel 21VU:	On the Cockpit Overhead Panel 21VU:
Push the RCDR GND CTL button.	The blue light indicator ON in the RCDR GND CTL button goes off.

Subtask 31-36-00-740-071-CW ** ON A/C NOT FOR ALL

B. FDIMU Fault Monitoring Test (DFDRS Part)

NOTE: If different CFDIU standard is installed, the MCDU display will shows FDIU or DFDRS related to the used standard.

ACTION	RESULT
On cockpit overhead-panel 21VU:	On cockpit overhead-panel 21VU:
Push the RCDR GND CTL button.	The blue-light indicator ON in the RCDR GND CTL button comes on.
On the MCDU:	On the MCDU display:
Push the line key adjacent to CFDS indication.	The CFDS page comes into view.
Push the line key adjacent to SYSTEM REPORT/STATUS indication.	The SYSTEM REPORT/TEST page comes into view.
Push the line key adjacent to INST indication.	The SYSTEM REPORT/TEST - INST page comes into view.
Push the line key adjacent to FDIU/DFDRS indication.	The DFDRS page comes into view.
Push the line key adjacent to LRU IDENT indication.	The DFDRS LRU IDENTIFICATION page comes into view. The part number of the FDIMU and DFDRS Software shows.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to GND SCANNING indication.	The DFDRS GROUND SCANNING page comes into view. The message NO FAULT DETECTED shows.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to TEST indication.	The DFDRS TEST page comes into view.
Push the line key adjacent to START TEST indication.	The message TEST IN PROGRESS shows for a short time. The message TEST OK shows.
Push the line key adjacent to TEST CLOSE UP indication.	The message CLOSE UP CONDITION SELECT RCDR GND CTL OFF shows. NOTE: Do not push the RCDR GND CTL OFF button. Continue with the next step.
Push the line key adjacent to RETURN indication.	The DFDRS page comes into view.
Push the line key adjacent to SPECIFIC DATA indication.	The DFDRS SPECIFIC DATA page comes into view.
Push the line key adjacent to FDIU INFORMATIONS indication.	The DFDRS FDIU INFORMATIONS page comes into view. The subsequent data shows: STATUS OF DFDR : PLAY BACK RECEIVED REC : xxx FLEET : xxxx A/C TYPE ID : xxxxxx A/C TAIL NO : x-xxxx NOTE: One x is one alphanumeric character.
Push the line key adjacent to RETURN indication until the CFDS MENU page comes into view.	The CFDS page comes into view.
Push the MCDU MENU mode key.	The MCDU MENU page shows.
On cockpit overhead-panel 21VU:	On cockpit overhead-panel 21VU:
Push the RCDR GND CTL button.	The blue-light indicator ON in the RCDR GND CTL button goes off.

Subtask 31-36-00-740-071-B

DELETED

5. Close-up
Subtask 31-36-00-860-085-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On overhead maintenance panel 50VU, push the FADEC GND PWR ENG1 and ENG2 pushbutton-switches (on the pushbutton switch, the ON legend goes off).
(2) Set the OFF/NAV/ATT selector switches related to IR1, IR2 and IR3 to OFF position.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

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