DOC AIRBUS | TSM A320FInvalid Configuration of the ATSU
TASK 46-21-00-810-809-A
Invalid Configuration of the ATSU
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 46-21-00-740-066-A 4. Fault Isolation
Subtask 46-21-00-810-115-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:34:18 UTC
Invalid Configuration of the ATSU
1. Possible Causes
- ATSU [1TX1]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 46-21-00-610-001 | Uploading of the ATSU Software with the PDL (SFIM or equivalent) |
| AMM 46-21-00-740-001 | BITE Test of the ATIMS |
| AMM 46-21-00-860-001 | Initialization Procedure of the ATSU Router |
| AMM 46-21-34-000-001 | Removal of the Air Traffic Service Unit (ATSU) |
| AMM 46-21-34-400-001 | Installation of the Air Traffic Service Unit (ATSU) |
Subtask 46-21-00-740-066-A 4. Fault Isolation
Subtask 46-21-00-810-115-B ** ON A/C NOT FOR ALL
A. If the test gives the "INVALID ATSU CONFIG/ATSU1(1TX1)" maintenance message:
Do the check of the ATSU software configuration:
(1) On the LRU IDENTIFICATION page:
Make sure that the reference shown below the related software indication is the same as the reference read on the disk(s) uploaded in the ATSU AMM 46-21-00-610-001:
(b) If the references are the same:
1 Do the initialization procedure of the ATSU AMM 46-21-00-860-001.
a If the fault continues:
Subtask 46-21-00-810-115-D ** ON A/C NOT FOR ALL Do the check of the ATSU software configuration:
(1) On the LRU IDENTIFICATION page:
Make sure that the reference shown below the related software indication is the same as the reference read on the disk(s) uploaded in the ATSU AMM 46-21-00-610-001:
- ATSU A/C INTFC for the ATSU A/C INTERFACE software component (20TX)
- ATSU ARF CONFIG for the ATSU CONFIGURATION software component (21TX)
- ATSU ROUTR PARAM for the ATSU ROUTER PARAM software component (30TX)
- ATSU FANSA for the ATSU ATC FANSA APPLICATIONS software component (35TX) (if installed)
- ATSU ARINC 623 for the ATSU ATC ARINC 623 APPLICATIONS software (23TX) (if installed).
(b) If the references are the same:
1 Do the initialization procedure of the ATSU AMM 46-21-00-860-001.
a If the fault continues:
- Replace the ATSU [1TX1] AMM 46-21-34-000-001 and AMM 46-21-34-400-001.
A. If the test gives the "INVALID ATSU CONFIG/ATSU1(1TX1)" maintenance message:
Do the check of the ATSU software configuration:
(1) On the LRU IDENTIFICATION page:
Make sure that the reference shown below the related software indication is the same as the reference read on the disk(s) uploaded in the ATSU AMM 46-21-00-610-001:
(b) If the references are the same:
1 Do the initialization procedure of the ATSU AMM 46-21-00-860-001.
a If the fault continues:
Subtask 46-21-00-740-067-A Do the check of the ATSU software configuration:
(1) On the LRU IDENTIFICATION page:
Make sure that the reference shown below the related software indication is the same as the reference read on the disk(s) uploaded in the ATSU AMM 46-21-00-610-001:
- ATSU A/C INTFC for the ATSU A/C INTERFACE software component (20TX)
- ATSU ARF CONFIG for the ATSU CONFIGURATION software component (21TX)
- ATSU ROUTR PARAM for the ATSU ROUTER PARAM software component (30TX).
(b) If the references are the same:
1 Do the initialization procedure of the ATSU AMM 46-21-00-860-001.
a If the fault continues:
- Replace the ATSU [1TX1] AMM 46-21-34-000-001 and AMM 46-21-34-400-001.
B. Do the test given in Para. 3.