- If the finding do not indicate mechanical problem, replace the defective: . SW-BLOCKER DOOR DEPLOY, L (4103KS1) or/and . SW-BLOCKER DOOR DEPLOY, R (4103KS2) (Ref. AMM TASK 78-31-17-000-040) and (Ref. AMM TASK 78-31-17-400-040).
a If the fault continues:
_
- replace successively the harness J5 then the harness J6 then the thrust reverser harness (Ref. AMM TASK 71-51-43-000-049) and (Ref. AMM TASK 71-51-43-400-049) (Ref. AMM TASK 71-51-43-000-004) and (Ref. AMM TASK 71-51-43-400-004) (Ref. AMM TASK 71-51-43-000-044) and (Ref. AMM TASK 71-51-43-400-044).
b If the fault continues:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
B. Do the test given in Para. 3.A.
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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TASK 78-31-00-810-844
Thrust-Reverser Blocker-Door Deploy-Switches Feedback Disagree on Engine 2
1. Possible Causes
_______________
- SW-BLOCKER DOOR DEPLOY, L (4103KS1)
- SW-BLOCKER DOOR DEPLOY, R (4103KS2)
- ECU (4000KS)
- thrust reverser harness
- harness J5
- harness J6
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 71-51-43-000-004
AMM 71-51-43-000-044
AMM 71-51-43-000-049
AMM 71-51-43-400-004
AMM 71-51-43-400-044
AMM 71-51-43-400-049
AMM 73-21-60-000-001
AMM 73-21-60-400-001
AMM 78-31-00-710-042
AMM 78-31-17-000-040
AMM 78-31-17-210-040
AMM 78-31-17-400-040
AMM 78-31-42-210-041
AMM 78-32-41-860-001
ASM 73-25/16
AWM 71-51-05
3. Fault Confirmation
__________________
Removal of the ECU (Channel B) to Thrust Reverser
Junction Box Harnesses (4214KS)
Removal of the Thrust Reverser (Channel A and B)
Harness (4200KS)
Removal of the ECU (Channel A) to Thrust Reverser
Junction Box Harnesses (4213KS)
Installation of the ECU (Channel B) to thrust
Reverser Junction Box Harnesses (4214KS)
Installation of the Thrust Reverser (Channel A and B)
Harness (4200KS)
Installation of the ECU (Channel A) to Thrust
Reverser Junction Box Harnesses (4213KS)
Removal of the Electronic Control Unit (ECU)
Installation of the Electronic Control Unit (ECU)
Operational Test of the Thrust Reverser System
Removal of the Blocker Door Deploy Switch
(4103KS1,4103KS2)
Detailed Visual Inspection of the Deploy Switches and
Triggers
Installation of the Blocker Door Deploy Switch
(4103KS1,4103KS2)
Detailed Visual Inspection of the electrical Harness
Manual Deployment of the Blocker Door
A. Do the operational test of the thrust reverser system (2A and 2B) (Ref. AMM TASK 78-31-00-710-042).
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4. Fault Isolation
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A. This fault message is generated if there is a disagreement between channel A and channel B on the thrust-reverser blocker-door deploy switches signal. Most probable cause is deploy switches or a harness failure.
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) EXHAUST(31)
