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Failure of the APU Boost on Engine 2
1. Possible Causes
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- EIU-2 (1KS2)
- ECB (59KD)
- wiring from EIU-2 (1KS2) to the ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) 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 73-25-34-710-043 Operational Test of the Engine Interface Unit
ASM 73-25/09
ASM 73-25/09
3. Fault Confirmation
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A. Do the operational test of the engine interface unit through the CFDS (Ref. AMM TASK 73-25-34-710-043).
4. Fault Isolation
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A. If the test gives the maintenance message CHECK ECB (59KD)/EIU2 CIRCUIT OR EIU2:
- do a check to make sure that the APU is boosted during the engine start sequence when the starter shutoff valve is open.
(1) If the APU is boosted:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(2) If the APU is not boosted:
- do a check and repair the wiring from EIU-2 (1KS2) to the ECB (59KD), pin AB/1C to pin AB/E5 (Ref. ASM 73-25/09) and (Ref. ASM 73-25/09).
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- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
(b) 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).
B. Do the test given in Para. 3.A.
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TASK 73-25-00-810-869
Failure of the T/R Inhibition System on Engine 1
1. Possible Causes
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- EIU-1 (1KS1)
- RELAY-THRUST REV INHIBITION, ENG 1 (14KS1)
- wiring from the EIU-1 (1KS1) to the engine 1 thrust reverser inhibition relay (14KS1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 73-25-34-710-043 Operational Test of the Engine Interface Unit
ASM 73-25/16
ASM 73-25/16
ASM 73-25/19
3. Fault Confirmation
__________________
A. Do the operational test of the engine interface unit through the CFDS (Ref. AMM TASK 73-25-34-710-043).
4. Fault Isolation
_______________
A. If the test gives the maintenance message CHECK 14KS1 RELAY CIRCUIT OR EIU 1:
- replace the RELAY-THRUST REV INHIBITION, ENG 1 (14KS1) (Ref. ASM 73-25/16) and (Ref. ASM 73-25/19).
(1) If the fault continues:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(2) If the fault continues:
- do a check and repair the wiring from the EIU-1 (1KS1) to the engine 1 thrust reverser inhibition relay (14KS1) pin AB/10A to pin x of the relay (14KS1) (Ref. ASM 73-25/16) and (Ref. ASM 73-25/16).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 发动机燃油和控制 2(47)
