DOC AIRBUS | AMM A320FInstallation of the DEU A/DEU B - Mount
TASK 23-73-48-400-001-A
Installation of the DEU A/DEU B - Mount
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 23-73-48-860-050-A ** ON A/C NOT FOR ALL
Subtask 23-73-48-420-050-A ** ON A/C NOT FOR ALL
Subtask 23-73-48-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.03.31 23:18:55 UTC
Installation of the DEU A/DEU B - Mount
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | STEPLADDER 0.5 M (1.6 FT) |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 23-73-00-740-003-A | BITE-Test of the Cabin Intercommunication Data System (CIDS) through the PTP |
| TASK 23-73-00-861-001-A | Energize the Cabin Intercommunication Data System (CIDS) |
| TASK 23-73-46-400-001-A | Installation of the Decoder/Encoder Unit A |
| TASK 23-73-47-400-001-A | Installation of the Decoder/Encoder Unit B |
| 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 25-23-42-000-001-A | Removal of the Ceiling Panels - Forward Utility Area |
| TASK 25-23-42-000-002-A | Removal of the Ceiling Panels - Aft Utility Area |
| TASK 25-23-42-400-001-A | Installation of the Ceiling Panels - Forward Utility Area |
| TASK 25-23-42-400-002-A | Installation of the Ceiling Panels - Aft Utility Area |
| TASK 25-23-48-000-001-A | Removal of the Cove Light Panel |
| TASK 25-23-48-400-001-A | Installation of the Cove Light Panel |
Mount DEU A / DEU BSubtask 23-73-48-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that aircraft electrical circuits are energized
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(3) Make sure that the related cove light panel (Ref. AMM TASK 25-23-48-000-001), or the forward utility-area ceiling panel (Ref. AMM TASK 25-23-42-000-001), or the aft utility-area ceiling panel (Ref. AMM TASK 25-23-42-000-002) is removed.
Subtask 23-73-48-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that aircraft electrical circuits are energized
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is below the related access panel.
(3) Make sure that the related cove light panel (Ref. AMM TASK 25-23-48-000-001), or the forward utility-area ceiling panel (Ref. AMM TASK 25-23-42-000-001), or the aft utility-area ceiling panel (Ref. AMM TASK 25-23-42-000-002) is removed.
B. 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 | |||
| 49VU | COM/CIDS/DIR ESS/2 | 157RH | G02 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU A ESS/LINE 2 | 155RH | G05 |
| 49VU | COM/CIDS/DEU A ESS/LINE 1 | 154RH | G04 |
| 49VU | COM/CIDS/DEU B/ESS | 153RH | G03 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM DIR ESS/2 | 157RH | G02 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R AFT | 168RH | M14 |
| 121VU | COM NAV/CIDS/DEU A NORM/L AFT | 167RH | M13 |
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M12 |
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M11 |
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M10 |
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M09 |
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M08 |
| 121VU | COM NAV/CIDS/DIR NORM/2 | 156RH | M06 |
| 121VU | COM/CIDS/DEU A BAT/LINE 2 | 145RH | N14 |
| 121VU | COM/CIDS/DEU A BAT/LINE 1 | 144RH | N13 |
| 121VU | COM/CIDS/DEU B/BAT | 143RH | N12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M13 |
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M12 |
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M11 |
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M10 |
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M09 |
| 121VU | COM NAV/CIDS/DIR NORM/2 | 156RH | M07 |
| 2001VU | CIDS/ DEU A NORM AFT RH | 174RH | C08 |
| 2001VU | CIDS/ DEU A NORM AFT LH | 173RH | C07 |
| 2001VU | CIDS/ DEU A NORM MID 2 RH | 176RH | C06 |
| 2001VU | CIDS/ DEU A NORM MID 2 LH | 175RH | C05 |
Subtask 23-73-48-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the DEU A/DEU B-Mount
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Install the DEU mount (1) with the screws (3) and washers (4).
(4) Remove the CAP-BLANKING from each electrical connector and receptacle.
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Connect the electrical connector to the DEU mount (1).
(7) Remove the cover (5) from the DEU mount (1).
(8) Set the coding switches to the same position as shown on the label.
(9) Install the cover (5).
(10) Install the related DEU A (Ref. AMM TASK 23-73-46-400-001) or DEU B (Ref. AMM TASK 23-73-47-400-001).
Subtask 23-73-48-865-052-A ** 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) Install the DEU mount (1) with the screws (3) and washers (4).
(4) Remove the CAP-BLANKING from each electrical connector and receptacle.
(5) Make sure that all the electrical connections are clean and in the correct condition.
(6) Connect the electrical connector to the DEU mount (1).
(7) Remove the cover (5) from the DEU mount (1).
(8) Set the coding switches to the same position as shown on the label.
(9) Install the cover (5).
(10) Install the related DEU A (Ref. AMM TASK 23-73-46-400-001) or DEU B (Ref. AMM TASK 23-73-47-400-001).
B. Remove the safety clips and tags and close these circuit breakers in this sequence:
Subtask 23-73-48-869-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 2001VU | CIDS/ DEU A NORM MID 2 RH | 176RH | C06 |
| 2001VU | CIDS/ DEU A NORM MID 2 LH | 175RH | C05 |
| 2001VU | CIDS/ DEU A NORM AFT RH | 174RH | C08 |
| 2001VU | CIDS/ DEU A NORM AFT LH | 173RH | C07 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R AFT | 168RH | M14 |
| 121VU | COM NAV/CIDS/DEU A NORM/L AFT | 167RH | M13 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M13 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R MID | 166RH | M12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L MID | 165RH | M11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/R FWD | 164RH | M10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU A NORM/L FWD | 163RH | M09 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M09 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DEU B/NORM | 162RH | M08 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM/CIDS/DEU A ESS/LINE 2 | 155RH | G05 |
| 49VU | COM/CIDS/DEU A ESS/LINE 1 | 154RH | G04 |
| 49VU | COM/CIDS/DEU B/ESS | 153RH | G03 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM/CIDS/DEU A BAT/LINE 2 | 145RH | N14 |
| 121VU | COM/CIDS/DEU A BAT/LINE 1 | 144RH | N13 |
| 121VU | COM/CIDS/DEU B/BAT | 143RH | N12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DIR NORM/2 | 156RH | M07 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DIR NORM/2 | 156RH | M06 |
| 49VU | COM/CIDS/DIR ESS/2 | 157RH | G02 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | COM DIR ESS/2 | 157RH | G02 |
C. Aircraft Maintenance Configuration
(1) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(2) Do the BITE test of the Cabin Intercommunication Data System (CIDS) (Ref. AMM TASK 23-73-00-740-003).
5. Close-up(1) Make sure that the Cabin Intercommunication Data System (CIDS) is energized
(Ref. AMM TASK 23-73-00-861-001).
(2) Do the BITE test of the Cabin Intercommunication Data System (CIDS) (Ref. AMM TASK 23-73-00-740-003).
Subtask 23-73-48-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the related cove light panel (Ref. AMM TASK 25-23-48-400-001), or the forward utility-area ceiling panel (Ref. AMM TASK 25-23-42-400-001), or the aft utility-areaceiling panel (Ref. AMM TASK 25-23-42-400-002).
Subtask 23-73-48-862-050-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the related cove light panel (Ref. AMM TASK 25-23-48-400-001), or the forward utility-area ceiling panel (Ref. AMM TASK 25-23-42-400-001), or the aft utility-areaceiling panel (Ref. AMM TASK 25-23-42-400-002).