R B. If the failure message ECU (B CHANNEL) is not confirmed but is
R repetitive:
R - do a check of the J10 harness connection at the control alternator:

R (1) If the connection is loose:
R - tighten the connection by hand plus one eighth of a turn.

R NOTE : Soft nose pliers may be used if necessary.

____
R (2) If the connection is tight:
R - Disconnect the J10 harness from the alternator stator.

R (a) Visually examine the alternator stator receptacle and the J10
R harness connector for damaged pins or contamination, and the 90.
R elbow of the harness boot for evidence of overheat (Ref. AMM TASK
R 73-21-50-210-002).

R 1_ If harness or alternator stator connector is damaged:
R - repair or replace as required.

R 2_ If no damage is found:
R - remove the Alternator Stator (Ref. AMM TASK 73-21-30-000-R 001).
R - visually examine the alternator stator and rotor for
R evidence of contact.

R a_ If evidence of contact is found, the cause must be
R determined:
R - inspect the alternator rotor nut for proper installation,
R inspect the Electrical Master Chip Detector for particles
R (Ref. AMM TASK 79-00-00-281-002).
R
R * If chips are found on the chip detector:
R - replace the Accessory Gearbox Assembly (Ref. AMM TASK
R 72-63-00-000-003) and (Ref. AMM TASK 72-63-00-400-003)
R
R * If rubbing is found and chips were not found on the
R chip detector:
R - replace the Alternator Rotor and stator (Ref. AMM TASK
R 73-21-30-000-001) and (Ref. AMM TASK 73-21-30-400-001).
R
R * If no rubbing is noted:
R - reinstall the alternator stator (Ref. AMM TASK 73-21-R 30-400-001).

R b_ If no evidence of contact is found:
R - replace the J10 Harness (Ref. AMM TASK 73-21-50-000-043)
R and (Ref. AMM TASK 73-21-50-400-043)

R (3) If fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref.
R AMM TASK 73-21-60-400-001).

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R C. If the failure message ECU (B CHANNEL) is confirmed:
R - do a check of the J10 harness connection at the control alternator:

R (1) If the connection is loose:
R - tighten the connection by hand plus one eighth of a turn.

R NOTE : Soft nose pliers may be used if necessary.

____
R (2) If the connection is tight:
R - disconnect the J10 harness from the alternator stator (ALT-B)
R (located in the left core compartment).

R (a) Visually examine the alternator stator receptacle and the J10
R harness connector for damaged pins or contamination (Ref. AMM
R TASK 73-21-50-210-002).

R 1_ If harness or alternator stator connector is damaged:
R - repair or replace as required.

R 2_ If no damage is found:
R - do an electrical resistance test through the alternator
R stator connector between:

R . pins 2 and 5 (<1 Ohm)

R . pins 3 and 5 (<1 Ohm)

R . pins 4 and 5 (<1 Ohm)

R . pins 5 and the ground (>10 Megohms)

R 3_ If the resistance values are out of the specified limits:
R - replace the alternator stator (Ref. AMM TASK 73-21-30-000-R 001) and (Ref. AMM TASK 73-21-30-400-001).

R 4_ If the resistance values are in the specified limits:
R - reconnect the J10 harness to the alternator stator.
R - disconnect the J10 harness from the ECU (4000KS) receptacle.
R - Visually examine the ECU (4000KS) receptacle and the J10
R harness connector for damaged pins or contamination (Ref.
R AMM TASK 73-21-50-210-002).

R a_ If harness connector or ECU receptacle is damaged:
R - repair or replace as required.

R b_ If no damage is found:
R - do an electrical resistance test through the J10 harness
R between:

R . pins 5 and 13 (<1 Ohm)

R . pins 5 and 14 (<1 Ohm)

R . pins 5 and 15 (<1 Ohm)

R . pins 5 and 4 (>10 megohms)

R . pins 13 and 4 (>10 megohms)

R . pins 14 and 4 (>10 megohms)

R . pins 15 and 4 (>10 megohms)

R . pin 5 and the ground (>10 megohms)

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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) 發(fā)動(dòng)機(jī)指示(161)