DOC AIRBUS | AMM A320FInstallation of the Datalink Control and Display Unit (DCDU)
TASK 46-21-21-400-001-A
Installation of the Datalink Control and Display Unit (DCDU)
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 46-21-21-860-050-A ** ON A/C NOT FOR ALL
Subtask 46-21-21-420-050-A ** ON A/C NOT FOR ALL
Subtask 46-21-21-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:26:05 UTC
Installation of the Datalink Control and Display Unit (DCDU)
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 211 | COCKPIT |
| 212 | COCKPIT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 24-42-00-862-001-A | De-energize the Ground Service Network Supplied from the External Power |
| TASK 46-21-00-740-001-A | BITE Test of the ATIMS |
Datalink Control and Display Unit (DCDU)Subtask 46-21-21-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
Subtask 46-21-21-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
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 | |||
| 122VU | LIGHTING/INSTL LT/GLARE/SHLD | 5LF | Y05 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2TX1 (DCDU1) | |||
| 121VU | DCDU 1 | 6TX1 | L17 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | DCDU 1 | 6TX1 | K44 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2TX2 (DCDU2) | |||
| 121VU | DCDU 2 | 6TX2 | L18 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | DCDU 2 | 6TX2 | K45 |
Subtask 46-21-21-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the DCDU
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking cap from the electrical connector (4).
(4) Make sure that the electrical connector is clean and in the correct condition.
(5) Connect the electrical connector (4).
(6) Install the DCDU (3) in its housing.
(7) Install and tighten the four screws (1) and washers (2).
Subtask 46-21-21-865-052-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) Remove the blanking cap from the electrical connector (4).
(4) Make sure that the electrical connector is clean and in the correct condition.
(5) Connect the electrical connector (4).
(6) Install the DCDU (3) in its housing.
(7) Install and tighten the four screws (1) and washers (2).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 46-21-21-740-050-A ** ON A/C NOT FOR ALL 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | LIGHTING/INSTL LT/GLARE/SHLD | 5LF | Y05 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2TX1 (DCDU1) | |||
| 121VU | DCDU 1 | 6TX1 | L17 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | DCDU 1 | 6TX1 | K44 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 2TX2 (DCDU2) | |||
| 121VU | DCDU 2 | 6TX2 | L18 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | DCDU 2 | 6TX2 | K45 |
Subtask 46-21-21-410-050-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.
Subtask 46-21-21-862-050-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.