DOC AIRBUS | TSM A320FLoss of the Signal of the Thrust-Reverser Blocker-Door Deploy/Stow Switches on Engine 2
TASK 78-31-00-810-846-A
Loss of the Signal of the Thrust-Reverser Blocker-Door Deploy/Stow Switches on Engine 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 78-31-00-710-138-A ** ON A/C NOT FOR ALL Subtask 78-31-00-710-138-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 78-31-00-810-095-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:38:02 UTC
Loss of the Signal of the Thrust-Reverser Blocker-Door Deploy/Stow Switches on Engine 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 78-31-00-810-840-A | Thrust-Reverser Blocker-Door Stow-Switches Feedback Disagree on Engine 2 |
| TSM TASK 78-31-00-810-844-A | Thrust-Reverser Blocker-Door Deploy-Switches Feedback Disagree on Engine 2 |
| AMM 78-31-00-710-040 | Operational Test of the Thrust Reverser System |
| AMM 78-31-00-710-042 | Operational Test of the Thrust Reverser System |
Subtask 78-31-00-710-138-A ** ON A/C NOT FOR ALL Subtask 78-31-00-710-138-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 78-31-00-810-095-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message DPLSTW SW J5/J6, ECU through the channel A or B:
NOTE: A fault has been detected which cannot be isolated to the thrust-reverser blocker-door deploy and/or stow-switch circuits
- do the procedures as given with the CFDS messages below:
. DEPL SW, J5/J6, ECU (Ref. TSM TASK 78-31-00-810-844) and
. STOW SW, J5/J6, ECU (Ref. TSM TASK 78-31-00-810-840).