R 1_ If damage is found:
R - repair or replace as required.
R 2_ If no damage is found:
R - do the electrical resistance test through the N1 sensor
R (4000EV) (channel B) between:
R . pins 1 and 2 (40 to 80 ohms) R R for S/N different than 25451 and up
R . pins 1 and 3 (>5 kiloohms)
R . pin 1 and the ground (>10 megohms) R R for S/N 25451 and up
R . pins 1 and 3 (>10 megohms)
R . pin 1 and the ground (>10 megohms).
R a_ If the resistance values are out of the specified limits:
R - replace the N1 sensor (4000EV) (Ref. AMM TASK 77-11-10-R 000-002) and (Ref. AMM TASK 77-11-10-400-002).
R b_ If the resistance values are in the specified limits:
R - connect the HJ10 harness to the N1 sensor.
R (b) Disconnect connector HJ10 from the ECU (4000KS) receptacle and
R visually examine the receptacles and the connectors for damaged
R pins or contamination (Ref. AMM TASK 73-21-50-210-002).
R 1_ If damage is found:
R - repair or replace as required.
R 2_ If no damage is found:
R - do the electrical resistance test through the J10 harness
R between:
R . pins 16 and 17 (40 to 80 ohms) R R for S/N different than 25451 and up
R . pins 16 and 6 (>5 kiloohms)
R . pin 16 and the ground (>10 megohms) R R for S/N 25451 and up
R . pins 16 and 6 (>10 megohms)
R . pin 16 and the ground (>10 megohms).
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R a_ If the resistance values are in the specified limits:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001)
R and (Ref. AMM TASK 73-21-60-400-001).
R b_ If the resistance values are out of the specified limits:
R - replace the HJ10 harness (Ref. AMM TASK 73-21-50-000-043)
R and (Ref. AMM TASK 73-21-50-400-043).
R
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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Loss of the Feedback Signal of the N1 Speed Sensor - Engine 1 - Channel A
1. Possible Causes
_______________
- SENSOR-N1 ROTATIONAL SPD (4000EV)
- ECU (4000KS)
- HJ9 harness
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific bristle brush
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2011 * stoddard solvent (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 73-21-50-000-042 Removal of the HJ9 Harness AMM 73-21-50-210-002 Visual Inspection of the Wiring Harnesses 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 non Motoring) AMM 77-11-10-000-002 Removal of the N1 Speed Sensor (4000EV) AMM 77-11-10-400-002 Installation of the N1 Speed Sensor (4000EV)
3. Fault Confirmation
__________________
A. Do the operational test of the FADEC 1A on the ground (with engine non motoring) (Ref. AMM TASK 73-29-00-710-040).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机指示(121)
