DOC AIRBUS | AMM A320FInstallation of the Display Unit (DU)
TASK 31-63-22-400-001-A
Installation of the Display Unit (DU)
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 31-63-22-865-051-A
Subtask 31-63-22-420-050-A ** ON A/C NOT FOR ALL
Subtask 31-63-22-860-050-A
[Rev.10 from 2021]
2026.04.01 04:38:09 UTC
Installation of the Display Unit (DU)
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 22-97-00-710-001-A | Operational Test of the LAND CAT III Capability |
| TASK 31-60-00-610-001-A | X LOADING Procedure of the DMC1 to the PFD CAPT, ND CAPT, the EWD or the SD |
| TASK 31-60-00-610-002-A | X LOADING Procedure of the DMC2 to the PFD F/O or the ND F/O |
| TASK 31-60-00-710-001-A | Operational Test of the EIS |
| TASK 31-60-00-860-001-A | EIS Start Procedure |
Display UnitSubtask 31-63-22-865-051-A
A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2WT1 (PFDCAPT) | |||
| 49VU | EIS/PFD CAPT/SPLY | 11WT1 | E03 |
| ** ON A/C ALL | |||
| 49VU | EIS/PFD CAPT/SWTG | 22WT1 | E04 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | EIS/PFD/CAPT/SPLY | 11WT1 | E03 |
| ** ON A/C ALL | |||
| FOR FIN: 2WT2 (PFDF/O) | |||
| 121VU | EIS/PFD/F/O/SWTG | 22WT2 | R05 |
| 121VU | EIS/PFD/F/O | 11WT2 | R03 |
| FOR FIN: 3WT1 (NDCAPT) | |||
| 49VU | EIS/ND CAPT/SWTG | 23WT1 | E02 |
| 49VU | EIS/ND CAPT/SPLY | 12WT1 | E01 |
| FOR FIN: 3WT2 (NDF/O) | |||
| 121VU | EIS/ND/F/O/SWTG | 23WT2 | R06 |
| 121VU | EIS/ND/F/O | 12WT2 | R04 |
| FOR FIN: 4WT1 (DUECAM, UPPER) | |||
| 49VU | EIS/ECAM DU/UPPER/SWTG | 24WT1 | E06 |
| 49VU | EIS/ECAM DU/UPPER/SPLY | 13WT1 | E05 |
| FOR FIN: 4WT2 (DUECAM, LOWER) | |||
| 121VU | EIS/ECAM DU/LOWER/SPLY | 13WT2 | R11 |
| 121VU | EIS/ECAM DU/LOWER/SWTG | 24WT2 | R10 |
Subtask 31-63-22-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Display Unit (DU)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) In the housing of the DU (2), make sure that the ventilation air inlet (7) is in the correct condition (flexible seal installed and duct not blocked).
(4) Make sure that the locking studs (5) and the movable locking hooks (6) are not damaged.
(5) Remove the blanking caps from the electrical connectors (1).
(6) Make sure that the electrical connectors (1) are in the correct condition.
(7) Install the DU (2) in the open panel.
(8) Move down the handle (3) fully down to the bottom of the screen.
(9) Push the DU (2) until the locking studs (5) touch the movable locking hooks (6) (make sure that the front face of the DU (2) comes out of the panel approximately 30 mm (1.18 in.)).
(10) Push on the two sides of the DU (2) to connect the electrical connector (1). Let the handle (3) move freely up until it is at the level of the locking catches (4) (the DU is now aligned with the panel).
(11) Slowly and continuously move the handle (3) to its maximum up position. In this position the two locking catches (4) are locked below the handle (3).
(12) FOR [2WT1] (PFD-CAPT), [3WT1] (ND-CAPT)
Install the thermoformed cover on the CAPT main instrument panel.
(13) FOR [2WT2] (PFD-F/O), [3WT2] (ND-F/O)
Install the thermoformed cover on the F/O main instrument panel.
(14) FOR [4WT1] (DU-ECAM, UPPER), [4WT2] (DU-ECAM, LOWER)
Install the thermoformed cover on the center instrument panel.
Subtask 31-63-22-420-050-B ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) In the housing of the DU (2), make sure that the ventilation air inlet (7) is in the correct condition (flexible seal installed and duct not blocked).
(4) Make sure that the locking studs (5) and the movable locking hooks (6) are not damaged.
(5) Remove the blanking caps from the electrical connectors (1).
(6) Make sure that the electrical connectors (1) are in the correct condition.
(7) Install the DU (2) in the open panel.
(8) Move down the handle (3) fully down to the bottom of the screen.
(9) Push the DU (2) until the locking studs (5) touch the movable locking hooks (6) (make sure that the front face of the DU (2) comes out of the panel approximately 30 mm (1.18 in.)).
(10) Push on the two sides of the DU (2) to connect the electrical connector (1). Let the handle (3) move freely up until it is at the level of the locking catches (4) (the DU is now aligned with the panel).
(11) Slowly and continuously move the handle (3) to its maximum up position. In this position the two locking catches (4) are locked below the handle (3).
(12) FOR [2WT1] (PFD-CAPT), [3WT1] (ND-CAPT)
Install the thermoformed cover on the CAPT main instrument panel.
(13) FOR [2WT2] (PFD-F/O), [3WT2] (ND-F/O)
Install the thermoformed cover on the F/O main instrument panel.
(14) FOR [4WT1] (DU-ECAM, UPPER), [4WT2] (DU-ECAM, LOWER)
Install the thermoformed cover on the center instrument panel.
A. Installation of the Display Unit (DU)
(2) Do an inspection of the component interfaces and the adjacent area.
(3) In the housing of the DU (2), make sure that the ventilation air inlet (7) is in the correct condition (flexible seal installed and duct not blocked).
(4) Make sure that the locking studs (5) and the movable locking hooks (6) are not damaged.
(5) Remove the blanking caps from the electrical connectors (1).
(6) Make sure that the electrical connectors (1) are in the correct condition.
(7) Install the DU (2) in the panel opening.
(8) Move the handle (3) fully down to the bottom of the screen.
(9) Push the DU (2) until the locking studs (5) touch the movable locking hooks (6) (make sure that the front face of the DU (2) comes out of the panel approximately 30 mm (1.18 in.)).
(10) Push on the two sides of the DU (2) to connect the electrical connector (1). Let the handle (3) move freely up until it is at the level of the locking catches (4) (the DU (2) is now aligned with the panel).
(11) Slowly and continuously move the handle (3) to its maximum up position. In this position the two locking catches (4) are locked below the handle (3).
(12) FOR [2WT1] (PFD-CAPT), [3WT1] (ND-CAPT)
Install the thermoformed cover on the CAPT main instrument panel.
(13) FOR [2WT2] (PFD-F/O), [3WT2] (ND-F/O)
Install the thermoformed cover on the F/O main instrument panel.
(14) FOR [4WT1] (DU-ECAM, UPPER), [4WT2] (DU-ECAM, LOWER)
Install the thermoformed cover on the center instrument panel.
Subtask 31-63-22-552-050-A CAUTION:
IF YOU INSTALL THE CAPT OR F/O ND UNIT (3WT1 OR 3WT2), DO NOT INSTALL A DISPLAY UNIT WITH P/N C19366XXXX. IF YOU DO NOT OBEY THIS PRECAUTION, DAMAGE TO THE OANS OPTIC FIBER WILL OCCUR.
(1) Clean the component interfaces and the adjacent area.(2) Do an inspection of the component interfaces and the adjacent area.
(3) In the housing of the DU (2), make sure that the ventilation air inlet (7) is in the correct condition (flexible seal installed and duct not blocked).
(4) Make sure that the locking studs (5) and the movable locking hooks (6) are not damaged.
(5) Remove the blanking caps from the electrical connectors (1).
(6) Make sure that the electrical connectors (1) are in the correct condition.
(7) Install the DU (2) in the panel opening.
(8) Move the handle (3) fully down to the bottom of the screen.
(9) Push the DU (2) until the locking studs (5) touch the movable locking hooks (6) (make sure that the front face of the DU (2) comes out of the panel approximately 30 mm (1.18 in.)).
(10) Push on the two sides of the DU (2) to connect the electrical connector (1). Let the handle (3) move freely up until it is at the level of the locking catches (4) (the DU (2) is now aligned with the panel).
(11) Slowly and continuously move the handle (3) to its maximum up position. In this position the two locking catches (4) are locked below the handle (3).
(12) FOR [2WT1] (PFD-CAPT), [3WT1] (ND-CAPT)
Install the thermoformed cover on the CAPT main instrument panel.
(13) FOR [2WT2] (PFD-F/O), [3WT2] (ND-F/O)
Install the thermoformed cover on the F/O main instrument panel.
(14) FOR [4WT1] (DU-ECAM, UPPER), [4WT2] (DU-ECAM, LOWER)
Install the thermoformed cover on the center instrument panel.
B. Return-to-service in Hot and very Humid Conditions
Subtask 31-63-22-865-052-A NOTE: In hot and very humid conditions, it is necessary to apply the precaution that follows before you energize the DU.
(1) After the installation of the DU on the aircraft, wait 15 minutes before you energize the DU. During this period the avionics ventilation system operates to remove the internal condensation. C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 31-63-22-740-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2WT1 (PFDCAPT) | |||
| 49VU | EIS/PFD CAPT/SPLY | 11WT1 | E03 |
| ** ON A/C ALL | |||
| 49VU | EIS/PFD CAPT/SWTG | 22WT1 | E04 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | EIS/PFD/CAPT/SPLY | 11WT1 | E03 |
| ** ON A/C ALL | |||
| FOR FIN: 2WT2 (PFDF/O) | |||
| 121VU | EIS/PFD/F/O/SWTG | 22WT2 | R05 |
| 121VU | EIS/PFD/F/O | 11WT2 | R03 |
| FOR FIN: 3WT1 (NDCAPT) | |||
| 49VU | EIS/ND CAPT/SWTG | 23WT1 | E02 |
| 49VU | EIS/ND CAPT/SPLY | 12WT1 | E01 |
| FOR FIN: 3WT2 (NDF/O) | |||
| 121VU | EIS/ND/F/O/SWTG | 23WT2 | R06 |
| 121VU | EIS/ND/F/O | 12WT2 | R04 |
| FOR FIN: 4WT1 (DUECAM, UPPER) | |||
| 49VU | EIS/ECAM DU/UPPER/SWTG | 24WT1 | E06 |
| 49VU | EIS/ECAM DU/UPPER/SPLY | 13WT1 | E05 |
| FOR FIN: 4WT2 (DUECAM, LOWER) | |||
| 121VU | EIS/ECAM DU/LOWER/SPLY | 13WT2 | R11 |
| 121VU | EIS/ECAM DU/LOWER/SWTG | 24WT2 | R10 |
D. Check of the Software Update
Subtask 31-63-22-552-052-A ** ON A/C NOT FOR ALL | ACTION | RESULT |
|---|---|
Wait for 40 seconds.
| |
|
|
|
|
|
|
|
|
| Do the X LOADING procedure of DMC2 (Ref. AMM TASK 31-60-00-610-002). |
E. Reset of the Display Management Computer (DMC)
(1) On the center pedestal, on SWITCHING panel 8VU:
Subtask 31-63-22-740-053-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on SWITCHING panel 8VU:
- Make sure that the EIS DMC and ECAM/ND XFR selector switches are in the NORM position.
- For the CAPT PFD, CAPT ND or upper ECAM DU, open and close EIS/DMC1/SPLY circuit breaker 10WT1 on overhead circuit-breaker panel 49VU.
- For the F/O PFD, F/O ND or lower ECAM DU, open and close EIS/DMC2/SPLY circuit breaker 10WT2 on rear circuit-breaker panel 121VU.
F. Automatic Check of the Software Update
After the installation of the DU, an automatic check occurs to make sure that the DMC and the DU have the same software version.
If they do not have the same version, a teleloading procedure occurs. During this procedure, a TELELOADING message comes into view on the DU for 10 seconds.
Subtask 31-63-22-710-051-A After the installation of the DU, an automatic check occurs to make sure that the DMC and the DU have the same software version.
If they do not have the same version, a teleloading procedure occurs. During this procedure, a TELELOADING message comes into view on the DU for 10 seconds.
G. Test
(1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(2) Do the operational test of the EIS (Ref. AMM TASK 31-60-00-710-001).
(a) If the aircraft operates in CAT3 conditions, do also do this test (Ref. AMM TASK 22-97-00-710-001). This is applicable for the CAPT PFD, F/O PFD, CAPT ND and F/O ND.
5. Close-up(1) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(2) Do the operational test of the EIS (Ref. AMM TASK 31-60-00-710-001).
(a) If the aircraft operates in CAT3 conditions, do also do this test (Ref. AMM TASK 22-97-00-710-001). This is applicable for the CAPT PFD, F/O PFD, CAPT ND and F/O ND.
Subtask 31-63-22-860-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(1) Make sure that the work area is clean and clear of tools and other items.