ASM 74-31/01
R AWM 73-25-09
R AWM 76-12-01
 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the fault symptom is identified by the crew observation: ENG2 STARTING
 - Opening of the starter shutoff valve not possible in automatic mode.
 (1) Remove the panel 115VU and do a check and repair the aircraft wiring between:
 - the ENG/MASTER2 control switch (2KC) and the EIU2 (1KS2), pins AA/5A, 5E to pins 2A, 3A

 - the ENG/MODE/CRANK/AUTO IGN/IGN selector switch (6KS) and the EIU2 (1KS2), pins AA/1A, 1B, 1C to pins 2, 3, 4.

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 (2) Do a check and repair the aircraft wiring between the EIU2 (1KS2) and the ECU (4000KS) (Ref. ASM 74-31/01).

 (3) If the fault continues:

 - replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
 (4) If the fault continues: R - replace the CTL SW-ENG/MASTER2 (2KS) (Ref. AWM 76-12-01) and/or R - replace the SEL SW-ENG/MODE/CRANK/AUTO IGN/IGN (6KS) (Ref. AWM 73-R 25-09).
 - install the panel 115VU and do a test program after removal/installation of a VU panel. (Ref. AMM TASK 31-10-00-700-001)
 (5) If the fault continues:
 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 B. If the starter shutoff valve does not open in manual mode:
 (1) Do a check and repair the aircraft wiring between the ENG/MAN START/2 pushbutton switch (9KS2) and the EIU2 (1KS2), pin AA/1F to pin AA3.

 (2) Do a check and repair the aircraft wiring between the EIU2 (1KS2) and the ECU (4000KS) (Ref. ASM 74-31/01).

 (3) If the fault continues:

 - replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).

 (4) If the fault continues:

 - replace the CTL SW-ENG/MASTER2 (2KS) and/or

 - replace the SEL SW-ENG/MODE/CRANK/AUTO IGN/IGN (6KS).

 (5) If the fault continues:

 - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
 C. Do an engine automatic start procedure (Ref. AMM TASK 71-00-00-710-003).
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 1. Possible Causes
 N1 Rotor does not Turn during the Start of the Engine 1 or 2 _______________
 2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R R  AMM AMM AMM  71-00-00-710-003 72-21-00-210-006 72-23-00-210-003 
3. Fault Confirmation__________________
 A. Test

Engine Automatic Start Inspect Fan Rotor Blades Removed from the Fan Disk. Detailed Inspection of Engine Inlet, Fan Blades, Fan Outlet and Abradable Material
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the fault symptom is identified by the crew observation : ENG1/2 STARTING-N1 rotor does not turn during the start:
 - do an inspection of the engine inlet and exhaust areas for damage.
 (1) If the fault continues:

 - do a check to make sure that there is no sign of interference/binding between the fan blade and the fan case abradable.
 (a) If yes:

 - release the caught blade(s). To do this, use your hand force to move the blade tip(s) forward and circumferentially

 - do a check of the fan blade(s) (Ref. AMM TASK 72-21-00-210-006)

 - do a check of the abradable shroud (Ref. AMM TASK 72-23-00-210-003).

 (2) If the fault continues:

 - try to manually turn the N1 rotor.
 (a) If it is not possible to turn the N1 rotor:
 - stop 30 minutes before you try to manually turn again the rotor.

 (3) If the fault continues:

 - do a check of the magnetic chip detectors for unwanted particles .
　
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 STARTING 起動(9)