A320 Trouble Shooting Manual 排故手册 动力装置 POWER PLANT(15)

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 CAUTION : MAKE SURE THAT THERE IS NO HYDRAULIC PRESSURE WHILE YOU DO THIS
_______ TEST. PUT A WARNING NOTICE IN THE COCKPIT TO TELL PERSONS NOT TO PRESSURIZE THE HYDRAULIC SYSTEMS.
 (1) If the test gives the maintenance message J6, TR ACFT SW, ECU: - on the overhead panel 50VU, push and release the P/BSW-ENG/FADEC
 GND PWR/1 (7KS1) the ON legend comes on, R
 - remove the RELAY-THRUST REV INHIBITION, ENG 1 (14KS1) from 187VU and do a check for 28VDC at pin A/X on the relay base (Ref. ASM 73-25/16).
 (a) If there is 28VDC: R
 - disconnect the connector E from the TCU1 (8KS1) and do a check for ground at pin E/C.
 1 If there is ground:
_
 - 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).
 2 If there is no ground:
_ - on the overhead panel 50VU, push the P/BSW-ENG/FADEC GND PWR/1 (7KS1) the ON legend goes off,
 - remove the EIU1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and disconnect the connector E from the TCU1 (8KS1),

 - 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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