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1. Possible Causes
Disagree between the N1 Indication and the ECU Output on Engine 1 _______________
- SENSOR-N1 ROTATIONAL SPD (4000EV)
- HJ9/HJ10 harness
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring)
3. Fault Confirmation__________________
A. Test.
R (1) Not applicable.
4. Fault Isolation_______________
A. The fault may be triggered with N1 fluctuations or due to defective SENSOR-N1 ROTATIONAL SPD (4000EV) or HJ9/HJ10 harness.
(1) Read the scheduled maintenance report or class 3 report and check if the message N1 SNSR, J9, ECU or N1 SNSR, J10, ECU is present. - If either message is present, do the related troubleshooting procedure.
R (2) If N1 fluctuations were reported when the warning was triggered, do the applicable troubleshooting procedure for ENG1 N1 fluctuations.
R R B. Do the operational test of the FADEC on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
R R (1) If the test gives the message N1 SNSR, J9, ECU or N1 SNSR, J10, ECU, do the applicable troubleshooting procedure.
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1. Possible Causes
Disagree between the N1 Indication and the ECU Output on Engine 2 _______________
- SENSOR-N1 ROTATIONAL SPD (4000EV)
- HJ9/HJ10 harness
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-29-00-710-040
3. Fault Confirmation
__________________
A. Test
(1) Not applicable.
4. Fault Isolation
_______________
Operational Test of the FADEC on the Ground (with Engine non Motoring)
A. The fault may be triggered with N1 fluctuations or due to defective SENSOR-N1 ROTATIONAL SPD (4000EV) or HJ9/HJ10 harness.
(1) Read the scheduled maintenance report or class 3 report and check if the message N1 SNSR, J9, ECU or N1 SNSR, J10, ECU is present. - If either message is present, do the related troubleshooting procedure.
R (2) If N1 fluctuations were reported when the warning was triggered, do the applicable troubleshooting procedure for ENG2 N1 fluctuations.
R R B. Do the operational test of the FADEC on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
R R (1) If the test gives the message N1 SNSR, J9, ECU or N1 SNSR, J10, ECU, do the applicable troubleshooting procedure.
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TASK 77-00-00-810-831
Disagree between the N2 Indication and the ECU Output on Engine 1
1. Possible Causes
_______________
- SENSOR-N2 ROTATIONAL SPD (4001EV)
- J7/J8 harness
- ECU
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring)
3. Fault Confirmation
__________________
A. Test
(1) Not applicable.
4. Fault Isolation
_______________
A. The fault may be triggered with wide N2 fluctuations or due to defective SENSOR-N2 ROTATIONAL SPD (4001EV) or J7/J8 harness. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(69)
