DOC AIRBUS | AMM A320FInstallation of the Data Loading Selector Unit (DLSU)
TASK 31-38-23-400-801-A
Installation of the Data Loading Selector Unit (DLSU)
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 31-38-23-865-051-A ** ON A/C NOT FOR ALL
Subtask 31-38-23-420-050-A ** ON A/C NOT FOR ALL
Subtask 31-38-23-860-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:36:43 UTC
Installation of the Data Loading Selector Unit (DLSU)
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 31-38-00-610-805-A | Uploading of the Database of the Data Loading Selector Unit (DLSU) |
Data Loading Selector Unit (DLSU)Subtask 31-38-23-865-051-A ** ON A/C NOT FOR ALL
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 | |||
| 121VU | DATA/LOADER/SPLY | 3TD | J16 |
| 121VU | DLSU &/DLRB/SPLY | 5TD | J15 |
| 121VU | PDL/PWR/SPLY | 14TD | K19 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | PDL/PWR/SPLY | 14TD | J45 |
| 121VU | DATA/LOADER/SPLY | 3TD | J39 |
| 121VU | DLSU &/DLRB/SPLY | 5TD | J38 |
Subtask 31-38-23-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Data Loading Selector Unit (DLSU)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Make sure that the DLSU housing is clean and clear of tool(s) and other items.
(6) Connect the electrical connectors (3).
(7) Install the DLSU (1) in its housing.
(8) Tighten the quarter-turn fasteners (2).
Subtask 31-38-23-865-052-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 CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Make sure that the DLSU housing is clean and clear of tool(s) and other items.
(6) Connect the electrical connectors (3).
(7) Install the DLSU (1) in its housing.
(8) Tighten the quarter-turn fasteners (2).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 31-38-23-710-050-A ** ON A/C NOT FOR ALL Subtask 31-38-23-740-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | DATA/LOADER/SPLY | 3TD | J16 |
| 121VU | DLSU &/DLRB/SPLY | 5TD | J15 |
| 121VU | PDL/PWR/SPLY | 14TD | K19 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | PDL/PWR/SPLY | 14TD | J45 |
| 121VU | DATA/LOADER/SPLY | 3TD | J39 |
| 121VU | DLSU &/DLRB/SPLY | 5TD | J38 |
D. Test(s)
5. Close-upNOTE: This test is a simulation, do not put a media disk into the Portable Data Loader (PDL).
| ACTION | RESULT |
|---|---|
| 1.On center pedestal 11VU, on the DLSU: | |
| The DB/N: PUSH NEXT/PREV indication comes into view. |
| 2.On center pedestal 11VU, on the DLSU: | |
| The FMGC1 NOT SELECTED indication comes into view. |
| 3.On center pedestal 11VU, on the DLSU: | |
| The CONNECT PDL PUSH SEL indication comes into view. |
| 4.On center pedestal 11VU, on the DLSU: | |
| The FMGC1 NOT SELECTED indication comes into view. |
| 5.On center pedestal 11VU, on the DLSU: | |
| |
Subtask 31-38-23-860-051-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(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.