R A. If the fault symptom is identified by the crew observation fuel leak at
R the Turbine Rear Frame water drain:
R - do the Dry Motoring check (Ref. AMM TASK 71-00-00-710-001) (Ref. AMM
R TASK 71-00-00-710-001).
R - perform a minimum idle check (Ref. AMM TASK 71-00-00-710-006) (Ref. AMM
R TASK 71-00-00-710-006).
R (1) If fuel leak is present, replace the HMU (Ref. AMM TASK 73-21-10-000-
R 001) (Ref. AMM TASK 73-21-10-400-001) (Ref. AMM TASK 73-21-10-000-
R 002) (Ref. AMM TASK 73-21-10-400-002).
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ELECTRICAL HARNESS - FAULT ISOLATION PROCEDURES
_______________________________________________
TASK 71-50-00-810-801
Loss of the 115VAC Power Supply on the ECU 1
1. Possible Causes
_______________
- EIU-1 (1KS1)
- ECU (4000KS)
- J1 harness
- wiring
- C/B-ENGINE/1 AND 2/IGN/SYS A (1JH)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)(4000KS) AMM 73-21-60-400-001 Installation of the Electronic Control Unit R (ECU)(4000KS) AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-29-00-710-040 Operational Test of the FADEC on the Ground (with Engine non Motoring) ASM 74-31/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU ENGINE/1 AND 2/IGN/SYS A 1JH A03
B. Test
(1) If you cannot close the circuit breaker (1JH), refer to Para. 4.B.
(2) 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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4. Fault Isolation
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A. If the circuit breaker (1JH) is closed and if the test gives the maintenance message J1, 115 VAC, ECU:
R CAUTION : WHEN THE "ENG/MASTER" LEVER IS IN THE "ON" POSITION, BE VERY_______
R CAREFUL NOT TO SET THE "ENG/MODE" SELECTOR SWITCH TO "CRANK" OR
R "IGN/START".
R IF YOU DO SET THE SELECTOR SWITCH TO ONE OF THESE POSITIONS,
R THE ENGINE WILL START. THERE IS THUS A RISK OF INJURY TO
R PERSONS AND OF DAMAGE TO EQUIPMENT.
R - On the panel 115 VU, set the MASTER switch to "ON".
- do a check for 115VAC at the ECU (4000KS) pins J1/7 (Ref. ASM 74-
31/01). R - On the panel 115 VU, set the MASTER switch to "OFF".
(1) If there is 115VAC:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
(2) If there is no 115VAC:
- do a check for 115VAC at the EIU-1 (1KS1) pin AB/14F.
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 動力裝置 POWER PLANT(7)
