- do a check for a short to ground between (Ref. ASM 78-37/01): .the EIU1 (1KS1) pin AA/4C and the TCU1 (8KS1) pin E/C .the EIU1 (1KS1) pin AA/4A and the TCU1 (8KS1) pin E/C.
3 If there is a short to ground:
_ - repair as required.
4 If nothing is found:
_
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(b) If there is no 28VDC: - on the overhead panel 50VU, push the P/BSW-ENG/FADEC GND PWR/1
(7KS1) the ON legend goes off, R
- replace the RELAY-THRUST REV INHIBITION, ENG 1 (14KS1) on 187VU (Ref. ASM 73-25/16).
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1 If the fault continues:
_
- disconnect the harness J6 from the ECU (4000KS),
- do a resistance check between: . pins 7 and 8 (>10 megohms) . pins 7 and 11 (>10 megohms) . pin 7 and the ground (>10 megohms).
a If there is an electrical short or a short to ground:
_
- replace the thrust reverser harness (Ref. AMM TASK 71-51-43-000-044) and (Ref. AMM TASK 71-51-43-400-044) or repair the aircraft wiring to the relay 14KS1 (Ref. ASM 73-25/16).
2 If nothing is found:
_
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
R (2) If the test does not give the maintenance message J6, TR ACFT SW, R ECU:
- replace the RELAY-THRUST REV INHIBITION, ENG 1 (14KS1) on 187VU (Ref. ASM 73-25/16).
(a) 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).
(b) If the fault continues:
- replace the CTL UNIT-THROTTLE, ENG 1 (8KS1) (Ref. AMM TASK 76-11-19-000-042) and (Ref. AMM TASK 76-11-19-400-042).
(c) If the fault continues:
- replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and (Ref. AMM TASK 73-21-60-400-001).
(d) If the fault continues:
R - do a check for a short to ground between (Ref. ASM 73-25/16): .the EIU1 (1KS1) pin AA/4C and the TCU1 (8KS1) pin E/C .the EIU1 (1KS1) pin AA/4A and the TCU1 (8KS1) pin E/C .the relay (14KS1) and its related wiring.
1 If nothing is found:
_
- replace the thrust reverser harness (Ref. AMM TASK 71-51-43-000-044) and (Ref. AMM TASK 71-51-43-400-044).
B. Do the test given in Para. 3.
(1) No additional maintenance action is required if the fault is not confirmed.
(2) Repeat the fault isolation procedure if the fault continues.
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Failure of the Thrust Reverser Inhibition Switch - Engine 2 - Channel B
1. Possible Causes
_______________
- CTL UNIT-THROTTLE, ENG 2 (8KS2)
- EIU-2 (1KS2)
- RELAY-THRUST REV INHIBITION, ENG 2 (14KS2)
- thrust reverser harness
- aircraft wiring
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 動力裝置 POWER PLANT(15)
