DOC AIRBUS | TSM A320FCSAS Control Unit Pin Program Mismatch
TASK 21-58-00-810-809-A
CSAS Control Unit Pin Program Mismatch
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 21-58-00-710-066-A ** ON A/C NOT FOR ALL
Subtask 21-58-00-810-058-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:24:50 UTC
CSAS Control Unit Pin Program Mismatch
1. Possible Causes
- wiring
- CSAS CONTROL UNIT [100HW]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 215301 | |
| AMM 21-58-34-000-001 | Removal of the CSAS Control Unit |
| AMM 21-58-34-400-001 | Installation of the CSAS Control Unit |
Subtask 21-58-00-710-066-A ** ON A/C NOT FOR ALL
A. Do a read out of the post flight report.
4. Fault IsolationNOTE: The fault cannot be reproduced on the ground.
Subtask 21-58-00-810-058-B ** ON A/C NOT FOR ALL
A. If the post flight report gives the maintenance message INVALID ACFT PIN PROG CSAS CTL UNIT:
Subtask 21-58-00-710-067-A ** ON A/C NOT FOR ALL - do a check and repair the wiring from:
- the CSAS CONTROL UNIT (100HW) pin program AK5 to ground and,
- the CSAS CONTROL UNIT (100HW) pin program AK7 to ground ASM 215301.
- replace the CSAS CONTROL UNIT [100HW] AMM 21-58-34-000-001 and AMM 21-58-34-400-001.
B. Do the test as given in the Para. 3.A.