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2. Job Set-up Information ______________________ A. Referenced Information -------------------------------------------------------------------------------REFERENCE DESIGNATION ------------------------------------------------------------------------------- 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 NOTE : The landing gear must be correctly compressed without any tools or ____ maintenance action.
- On the overhead panel 50VU, push the FADEC GND PWR 1 pushbutton switch.
- Put the throttle control levers in the idle 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 CLOSED, the failure is not confirmed.
- No further action is required
(2) If MCDU screen indicates SEC RELAY OPEN, the failure is confirmed.
- Do the step 4. Fault Isolation 4. Fault Isolation _______________ A. If MCDU screen indicates SEC RELAY OPEN: - 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 (2L) adjacent to the ECU RELAY 1+2 CTRL:
F 『 EEFF : ALL E ∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page B226 E E Aug 01/05 E E ECES E
F 『 E C F M E E E E 56 E E E (1) If fault light located on the Engine Panel Unit (115VU) is illuminated:
- 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 a 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 no ground signal: _
- Repair the wiring between EIU connector AA and 28KS1 (Ref. ASM 73-25/08). (2) If fault light located on the Engine Panel Unit (115VU) is not illuminated: - Replace the Relay (27KS1). (a) If the fault continues:
- Replace the Relay (28KS1).
(b) If the fault continues:
- Do a check for a ground signal at pin E2 of the EIU rack-connector AA:
1 If there is a 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 no ground signal: _
- Do a check for a ground signal: . at pin C of the 28KS1 connector A: . at pin Z of the 28KS1 connector A:
a If there is no ground signal: _ - repair the wiring as required
b If there is a ground signal: _
- Do a check of continuity between pin 6 of 28KS1 connector A and pin E2 of the EIU rack-connector AA: * If there is no continuity: - repair the wiring between EIU and 28KS1 (Ref. ASM 73-25/08) * If there is continuity: - remove 27KS1 F 『 EEFF : ALL E ∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page B227 E E Aug 01/05 E E ECES E
F 『 E C F M E E E E 56 E E E
- do a check for a 28V at pin X of the 27KS1 connector A: ** If there is 28V:
- repair the wiring between SEC1/2 and 27KS1 (Ref. ASM 73-25/23)
** If there is not 28V:
- repair the wiring as required (Ref. ASM 73-25/23)
B. Do the test given in Para. 3.A. F 『 EEFF : ALL E ∞∞73-20-00∞∞∞∞∞∞∞∞∞∞Page B228 E E Aug 01/05 E E ECES E
F 『 E C F M E E E
E 56 E E E TASK 73-20-00-810-981
Spurious TCMA Arming on Engine 2 1. Possible Causes _______________ - Relay (28KS2)
- EIU (1KS2) 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
