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R R R a_ If the resistance values are in the specified limits: - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001), - repeat the fault confirmation given in Para.3.A if the fault continues.
R R R b_ If the resistance values are out of the specified limits:- replace the harness with the resistance values out of the limits: . harness HJ9 (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042), . harness HJ10 (Ref. AMM TASK 73-21-50-000-043) and (Ref. AMM TASK 73-21-50-400-043).
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 80-11-00-810-803
R Failure of the Starter Shutoff Valve - Engine 1 - Channel A
1. Possible Causes
_______________
R - starter shutoff valve
- harness HJ9
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-042 Removal of the HJ9 Harness AMM 73-21-50-210-001 Visual Inspection of the Wiring Harness AMM 73-21-50-400-042 Installation of the HJ9 Harness 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 73-29-00-710-040 Operational Test of the FADEC on the ground (with
Engine Motoring)
R AMM 80-11-00-040-045 Manually Close the Starter Valve after Engine Start AMM 80-11-20-000-003 Removal of the Starter Shutoff Valve AMM 80-11-20-400-003 Installation of the Starter Shutoff Valve
3. Fault Confirmation
__________________
A. Test
(1) Do the operational test of the FADEC 1A on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
4. Fault Isolation
_______________
R A. This fault is generated if the actual starter shutoff valve position and R the demanded valve position disagree for a set time interval.
NOTE : The starter air duct pressure is expected to be greater than 25
____ psi (1.72 bar). If the starter air duct pressure is less than 25 psi:
R - do the trouble shooting of the bleed air system (TSM chapter 49 R if the APU was used),
- check that supplying engine speed was correct if cross bleed start was performed (increase engine speed for higher bleed pressure).
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(1) If the failure message START AIR, SAV is not confirmed: R
R (a) No maintenance action is required.
(2) If the failure message START AIR, SAV is not confirmed but is repetitive:
- replace the starter shutoff valve (Ref. AMM TASK 80-11-20-000-003) and (Ref. AMM TASK 80-11-20-400-003).
R (a) If the fault continues during the subsequent flights:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
R (b) If the fault continues during the subsequent flights:
- replace the harness HJ9 (channel A) (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 STARTING 起動(12)
