2 If no damage is found:
_
- do a cleaning of the connector and receptacle using a bristle brush with stoddard solvent (Material No. CP2011) (Ref. AMM TASK 73-21-50-210-002).
R
R (b) If the failure continues during the subsequent flights:
- replace the SENSOR-N2 ROTATIONAL SPD (4001EV) (Ref. AMM TASK
77-11-20-000-002) and (Ref. AMM TASK 77-11-20-400-002). R
R (c) If the failure 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
R (d) If the failure continues during the subsequent flights:
- replace the HJ8 harness (Ref. AMM TASK 73-21-50-000-041) and (Ref. AMM TASK 73-21-50-400-041).
(3) If the failure message N2 SNSR, J8, ECU* is confirmed: R - disconnect the HJ8 harness from the N2 sensor (N2-B connector).
R (a) Visually examine the receptacle and the connector for damaged R pins or contamination (Ref. AMM TASK 73-21-50-210-002).
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_ R - do the electrical resistance test through the N2 sensor R (4001EV) (channel B) between:
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. pins 1 and 2 (40 to 80 ohms)
. pins 1 and 3 (>10 megohms)
R . pin 1 and the ground (>10 megohms).
a If the resistance values are out of the specified limits:
_
- replace the N2 sensor (4001EV) (Ref. AMM TASK 77-11-20-000-002) and (Ref. AMM TASK 77-11-20-400-002).
b If the resistance values are in the specified limits:
_
R - connect the HJ8 harness to the N2 sensor.
R
R (b) Disconnect the HJ8 harness from the ECU (4000KS) and visually R examine the receptacle and the connector for damaged pins or R contamination (Ref. AMM TASK 73-21-50-210-002). R
1 If damage is found:
_ - repair or replace as required.
2 If no damage is found:
_
R - do the electrical resistance test through the HJ8 harness
R between: . pins 2 and 11 (40 to 80 ohms) . pins 2 and 3 (>10 megohms)
R . pin 2 and the ground (>10 megohms).
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).
b If the resistance values are out of the specified limits:
_
- replace the HJ8 harness (Ref. AMM TASK 73-21-50-000-041) and (Ref. AMM TASK 73-21-50-400-041).
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 77-10-00-810-837
Loss of the Alternator Power Supply on Engine 1 - Channel A
1. Possible Causes
_______________
- ECU (4000KS)
- alternator stator
- HJ9 harness
- alternator rotor
- AGB
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 72-63-00-000-003 Removal of the Accessory Gearbox Assembly AMM 72-63-00-400-003 Installation of the Accessory Gearbox Assembly AMM 73-21-30-000-001 Removal of the Control Alternator AMM 73-21-30-400-001 Installation of the Control Alternator 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 Motoring) AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine Non motoring) AMM 79-21-10-210-002 Check of the Lubrication Unit Magnetic Plugs and Screens
3. Fault Confirmation
__________________
**ON A/C 001-049, 056-056, 058-058, 061-099, 101-105, 151-199, 201-211, 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(145)
