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E 56 E E E (b) If the fault continues:
- replace the associated blocker door actuator: ACTUATOR-BLOCKER DOOR, UPPER R (3001KM1) or ACTUATOR-BLOCKER DOOR, LOWER R (3001KM2) or ACTUATOR-BLOCKER DOOR, UPPER L (3001KM3) or ACTUATOR-BLOCKER DOOR, LOWER L (3001KM4) (Ref. AMM TASK 78-31-41-000-001) and (Ref. AMM TASK 78-31-41-400-001).
B. If more than one blocker door is found unlocked or opens during the
manual check:
- replace the HCU-THRUST REV (4101KS) (Ref. AMM TASK 78-31-51-000-042) and (Ref. AMM TASK 78-31-51-400-042).
C. If all of the blocker doors are found steadily locked (flush with forward frame of the thrust reverser):
- make sure that the fault has not been triggered due to improper stowage of the blocker doors due to previous maintenance action on the thrust reverser. If the blocker doors were not properly stowed, the warning may have resulted from the activation of the FADEC auto-restow function.
(1) If you confirm that this was the case:
- do an operational test of the thrust reverser (Ref. AMM TASK 78-31-00-710-042).
(a) If there is no fault and the blocker doors are properly locked after the test:
- no further maintenance action is required.
(b) If the fault continues:
- continue the trouble shooting procedure as described in Para. 4.C.(2)(a).
(2) If you cannot confirm that previous maintenance action was the cause:
(a) Disconnect the thrust reverser harness at the lower R/H stow switch (4104KS2) and do an electrical resistance check between: . pins 2 and 5 (<5 ohms) . pins 4 and 9 (<5 ohms) . pins 2 and 3 (>10 megohms) . pins 4 and 7 (>10 megohms) . pin 2 and the ground (>10 megohms) . pin 9 and the ground (>10 megohms) . pin 3 and the ground (>10 megohms) . pin 7 and the ground (>10 megohms).
1 If the resistance values are out of the specified limits:
_
- replace the SW-BLOCKER DOOR STOW, LOWER R (4104KS2), (Ref. AMM TASK 78-31-18-000-001) and (Ref. AMM TASK 78-31-18-400-001).
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ECES F 『 E C F M E E E E 56 E E E 2 If the resistance values are in the specified limits:
_
- manually deploy the thrust reverser blocker doors (Ref. AMM TASK 78-32-41-860-001) and do an electrical resistance check between: . pins 2 and 3 (<5 ohms) . pins 4 and 7 (<5 ohms) . pins 2 and 5 (>10 megohms) . pins 4 and 9 (>10 megohms).
a If the resistance values are out of the specified limits:
_
- replace the SW-BLOCKER DOOR STOW, LOWER R (4104KS2), (Ref. AMM TASK 78-31-18-000-001) and (Ref. AMM TASK 78-31-18-400-001).
(b) Repeat the above electrical checks for other switches (SW-BLOCKER DOOR STOW, UPPER R (4104KS1), SW-BLOCKER DOOR STOW, LOWER L (4104KS3), SW-BLOCKER DOOR STOW, UPPER L (4104KS4)) and replace as necessary (Ref. AMM TASK 78-31-18-000-001) and (Ref. AMM TASK 78-31-18-400-001).
(c) If the resistance values are in the specified limits:
- reconnect the thrust reverser harness at each stow switch, manually stow all the blocker doors and disconnect harnesses J5 and J6 from the ECU,
- on the connectors of the harnesses J5 and J6 do a resistance check between: . pins 23 and 24 (<5 ohms).
1 If there is an open circuit:
_
- replace or repair the harnesses J5 and J6 or the thrust reverser harness (Ref. AMM TASK 71-51-43-000-049) and (Ref. AMM TASK 71-51-43-400-049).
2 If the resistance values are in the specified limits:
_
- do a check of the rigging of the blocker doors and correct as required (Ref. AMM TASK 78-32-41-820-001).
a 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).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 EXHAUST(52)
