3. Fault Confirmation
__________________
A. Test
Removal of the Electronic Control Unit (ECU)Installation of the Electronic Control Unit (ECU)Removal of the Engine Interface Unit (EIU)Installation of the Engine Interface Unit (EIU)Operational Test of the Thrust Reverser SystemDetailed Visual Inspection of the Stow-switches (4104ks1,4104ks2,4104ks3,4104ks4)General Visual Inspection of Actuator Rod End Attachments (Blocker Doors Deployed)Detailed Visual Inspection of the electrical HarnessGeneral Visual Inspection of the Hydraulic Tubing and Hoses (Blocker Doors Deployed)Removal of the Hydraulic Control UnitInstallation of the Hydraulic Control UnitManual Deployment of the Blocker Door
(1) Do an operational test of the Thrust Reverser system (Ref. AMM TASK 78-31-00-710-042).
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4. Fault Isolation
_______________
A. If the test gives the maintenance message TR LOCK, TR ACT:
NOTE : If the Thrust Reverser is partially open when commanded to deploy,
____ the ECU triggers the "TR LOCK, TR ACT" maintenance message instead of "EIU, HCU" (due to 2 fault parameters into the ECU software), carry out the following TSM procedure without take into account the components highlighted into the maintenance message.
- Do a general visual inspection of the TR hydraulic tubes (Ref. AMM TASK 78-31-49-210-002)
(1) If damage is found:
- repair or replace as necessary.
(2) If mothing is found:
- Perform a manual deployment of the blocker door (Ref. AMM TASK 78-32-41-860-001)
- Do a general visual inspection of blocker door actuator rod end attachments (Ref. AMM TASK 78-31-41-210-042)
(a) If damage is found:
- repair or replace as necessary.
(b) If nothing is found:
- Do a detailed visual inspection of the stow-switches (Ref. AMM TASK 78-31-18-210-001).
1 If damaged is found:
_ - repair or replace as necessary.
2 if nothing is found:
_
- Do a detailed visual inspection of the electrical harness (Ref. AMM TASK 78-31-42-210-041)
a If damage is found:
_
- repair or replace as necessary.
b if nothing is found:
_
- Replace the EIU (Ref. AMM TASK 73-25-34-000-040) (Ref. AMM TASK 73-25-34-400-040).
* If the fault continues, replace the HCU (4101KS) (Ref.
AMM TASK 78-31-51-000-042) (Ref. AMM TASK 78-31-51-400-042).
** If the fault continues, replace the ECU (4000KS) (Ref.
AMM TASK 73-21-60-000-001) (Ref. AMM TASK 73-21-60-400-001)
B. Do the test given in Para. 3.A.
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TASK 78-31-00-810-875
Thrust Reverser remaining fully stowed when commanded to deploy on ENG1
1. Possible Causes
_______________
- TR hydraulic tubes
- blocker door latches
- blocker door actuator
- electrical harness
- ECU (4000KS)
- HCU (4101KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU) AMM 73-21-60-400-001 Installation of the Electronic Control Unit (ECU) AMM 78-31-00-710-042 Operational Test of the Thrust Reverser System AMM 78-31-19-210-041 General Visual Inspection of the Blocker Door
latches, Hinges and Adjacent Structure (Blocker Doors Deployed) AMM 78-31-41-210-042 General Visual Inspection of Actuator Rod End
Attachments (Blocker Doors Deployed) AMM 78-31-42-210-041 Detailed Visual Inspection of the electrical Harness AMM 78-31-49-210-002 General Visual Inspection of the Hydraulic Tubing and
Hoses (Blocker Doors Deployed)
AMM 78-31-51-000-042 Removal of the Hydraulic Control Unit
AMM 78-31-51-400-042 Installation of the Hydraulic Control Unit
AMM 78-32-41-860-001 Manual Deployment of the Blocker Door
3. Fault Confirmation
__________________
A. Test
(1) Do an operational test of the Thrust Reverser system (Ref. AMM TASK 78-31-00-710-042).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 EXHAUST(57)
