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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 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發動機燃油和控制 2
