- EIU (1KS1)
- Relay (27KS1)
- SEC1
- SEC2
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
ASM 73-25/08
ASM 73-25/23
3. Fault Confirmation
__________________
A. Test
- On the overhead panel 50VU, push the FADEC GND PWR 1 pushbutton switch.
- Put the throttle control levers in the TO/GA position.
- On the left or right MCDU, get access to the ENGINE MAIN MENU screen.
- On the MCDU, push the line key (4R) adjacent to the applicable Specific tests indication.
- push the line key (5L) adjacent to the SEC RELAY STATUS:
(1) If MCDU screen indicates SEC RELAY OPEN, the failure is not confirmed.
- No further action is required
(2) If MCDU screen indicates SEC RELAY CLOSED, the failure is confirmed.
- Do the step 4. Fault Isolation
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4. Fault Isolation
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A. If MCDU screen indicates SEC RELAY CLOSED:
- Pull C/B 24KS1
- Push the line key (6L) adjacent to "RETURN" and re-select the SEC RELAY STATUS page:
(1) If MCDU screen indicates SEC RELAY CLOSED:
- Replace the Relay (28KS1).
(a) If the fault continues:
- Remove the EIU
- Do a check for a ground signal at pin E2 of the EIU rack-connector AA:
1 If there is no ground signal:
_
- replace the EIU (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
2 If there is a ground signal:
_
- Repair the wiring between EIU connector AA and 28KS1 (Ref. ASM 73-25/08).
(2) If MCDU screen indicates SEC RELAY OPEN:
- Replace the Relay (27KS1).
(a) If the fault continues:
- Pull C/B 21CE1 and 21CE2.
- Push the line key (6L) adjacent to "RETURN" and re-select the SEC RELAY STATUS page:
1 If SEC RELAY CLOSED is displayed:
_
- Repair the wiring between SEC1/2 and 27KS1 (Ref. ASM 73-25/23).
2 If SEC RELAY OPEN is displayed:
_
- push back C/B 21CE1 and Re-select MCDU SEC RELAY STATUS page:
a If SEC RELAY CLOSED is displayed:
_
- replace the SEC1 (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
b If SEC RELAY OPEN is displayed:
_
- replace the SEC2 (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
B. Do the test given in Para. 3.A.
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Spurious TCMA Arming on Engine 2
1. Possible Causes
_______________
- Relay (28KS2)
- EIU (1KS2)
- Relay (27KS2)
- SEC1
- SEC2
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
ASM 73-25/08
ASM 73-25/23
3. Fault Confirmation
__________________
A. Test
- On the overhead panel 50VU, push the FADEC GND PWR 2 pushbutton switch.
- Put the throttle control levers in the TO/GA position. 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 发动机燃油和控制 2(3)
