DOC AIRBUS | AMM A320FRemoval of the SDAC
TASK 31-55-34-000-001-A
Removal of the SDAC
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 31-55-34-810-050-A
Subtask 31-55-34-020-050-A
[Rev.10 from 2021]
2026.04.01 00:37:31 UTC
Removal of the SDAC
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 127 | REAR AVIONIC COMPARTMENT |
| 128 | REAR AVIONIC COMPARTMENT |
| 824 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 31-32-00-860-008-A | Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page |
| TASK 52-41-00-010-002-A | Open the Avionics Compartment Doors for Access |
System Data Acquisition Concentrator (SDAC)Subtask 31-55-34-810-050-A
A. Printing of Trouble Shooting Data (TSD)
(a) Get the SYSTEM REPORT/TEST/INST menu page (Ref. AMM TASK 31-32-00-860-008).
(b) On this page, push the line key adjacent to the ECAM 1 or ECAM 2 page.
(c) On the ECAM 1 or ECAM 2 page, push the line key adjacent to the LAST LEG REPORT page or PREVIOUS LEG REPORT page.
(d) Do a print of the TSD with the maintenance message and add the printed TSD sheet to the removed computer.
Subtask 31-55-34-865-055-A NOTE: TSD are used for analysis and TSM (detailed troubleshooting).
(1) If available, you can print the TSD as follows: (a) Get the SYSTEM REPORT/TEST/INST menu page (Ref. AMM TASK 31-32-00-860-008).
(b) On this page, push the line key adjacent to the ECAM 1 or ECAM 2 page.
(c) On the ECAM 1 or ECAM 2 page, push the line key adjacent to the LAST LEG REPORT page or PREVIOUS LEG REPORT page.
(d) Do a print of the TSD with the maintenance message and add the printed TSD sheet to the removed computer.
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 31-55-34-010-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| FOR FIN: 1WV1 (SDAC1) | |||
| 49VU | SDAC/1 AND 2/28VDC/ESS BUS | 12WV | F05 |
| 49VU | SDAC/1/SPLY | 3WV | F04 |
| 49VU | SDAC/1/26VAC SYNC/AC ESS BUS | 5WV | F02 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | EIS/SDAC/1/BUS1/26VAC SYNC AC | 9WV | Q04 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/HYD/QTY/IND | 1831GQ | P35 |
| 121VU | EIS/SDAC/1/BUS2/26VAC SYNC AC | 7WV | Q03 |
| FOR FIN: 1WV2 (SDAC2) | |||
| 49VU | SDAC/1 AND 2/28VDC/ESS BUS | 12WV | F05 |
| 49VU | SDAC/2/26VAC SYNC/AC ESS BUS | 6WV | F03 |
| 121VU | EIS/SDAC/2/SPLY | 2WV | Q06 |
| 121VU | EIS/SDAC/2/BUS1/26VAC SYNC AC | 10WV | Q05 |
| 121VU | EIS/SDAC/2/BUS2/26VAC SYNC AC | 8WV | Q02 |
C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in zone 128.
(2) Open the access door 824 (Ref. AMM TASK 52-41-00-010-002).
4. Procedure(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in zone 128.
(2) Open the access door 824 (Ref. AMM TASK 52-41-00-010-002).
Subtask 31-55-34-020-050-A
A. Removal of the SDAC
(1) Loosen the nuts (3) on the front of the rack (2).
(2) Lower the nuts (3).
(3) Pull the SDAC (5) on its rack (2) to disconnect the electrical connectors (1).
(4) Remove the SDAC (5) from its rack (2).
(5) Put CAP - BLANKING on the disconnected electrical connectors (1).
(1) Loosen the nuts (3) on the front of the rack (2).
(2) Lower the nuts (3).
(3) Pull the SDAC (5) on its rack (2) to disconnect the electrical connectors (1).
(4) Remove the SDAC (5) from its rack (2).
(5) Put CAP - BLANKING on the disconnected electrical connectors (1).