A320 Trouble Shooting Manual 排故手册 PNEUMATIC(113)

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 -install the BMC1 (1HA1) (Ref. AMM TASK 36-11-34-400-001)
 -refer to Para. 4.C.
If the impedance is more than 3 KOhms:
 -disconnect the connector between the cable 3HF1 and the sensing element 1HF1
 -connect the connector between the cable 2HF1 and the sensing element 1HF1
 -do a check of the impedance read on the LOOP CONTROLLER (9240SI).
 a If the impedance is less than 3 KOhms:
_ -replace the SNSG ELEM-OVHT, ENG 1 PYLON (1HF1)
 -disconnect the LOOP CONTROLLER (9240SI) from the BMC connector
 -install the BMC-1 (1HA1) which is removed (Ref. AMM TASK 36-11-34-400-001)
 -refer to Para. 4.C.
 b If the impedance is more than 3 KOhms:
_ -replace the CABLE ASSY (3HF1)
 -connect all the cables or connectors disconnected
 -do a check of the impedance read on the LOOP CONTROLLER (9240SI) . if the impedance is less than 3 KOhms:
 -do a check and repair the wiring between the pin 6B of the BMC1 connector (1HA1-AA) and the cable 3HF1
 -disconnect the LOOP CONTROLLER (9240SI) from the BMC1 connector
 -install the BMC1 (1HA1) (Ref. AMM TASK 36-11-34-400-001)
 -refer to Para. 4.C.
 . if the impedance is more than 3 KOhms:

 -disconnect the LOOP CONTROLLER (9240SI) from the BMC1 connector
 -install the BMC1 (1HA1) (Ref. AMM TASK 36-11-34-400-001)
 -refer to Para. 4.C.
 1
 -EFF : ALL

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 C. After the subsequent flight, make sure that the fault does not continue.

 1
 -EFF : ALL

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 Air Leak in the Engine 2 Pylon
 1. Possible Causes
_______________
 -BMC-2 (1HA2)

 -CABLE-CONNECTING, ENG 2 PYLON (2HF2)
 -SNSG ELEM-OVHT, ENG 2 PYLON (1HF2)
 -CABLE ASSY (3HF2)
 -ducts
 -seals

 -
wiring between the pin 6B of the BMC2 connector (1HA2-AA) and the cable 2HF2

 -
wiring between the pin 5B of the BMC2 connector (1HA2-AA) and the cable 3HF2

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
9240SI 1 LOOP CONTROLLER
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2)
 AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2)
 AMM 36-22-15-000-001 Removal of the Pylon Overheat Sensing Element (1HF1,

 1HF2) AMM 36-22-15-400-001 Installation of the Pylon Overheat Sensing Element (1HF1, 1HF2) ASM 36-22/01
 3. Fault Confirmation
__________________
 A. Test

 (1)
 Start the APU.

 (2)
 On the AIR control panel 30VU, push the APU BLEED pushbutton switch.

 1
 -EFF : ALL

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 4. Fault Isolation
_______________

 A. If the fault is confirmed (ENG BLEED LEAK warning):
 -do a leakage check of the ducting.
 (1)
 If the duct is cracked/damaged:

 -replace the defective ducts.

 (2)
 If there are leaks on the seals:

 -replace the defective seals.
 NOTE : If there are no air leaks, replace the seals (to prevent
____ leaks).
 B. If no leak warning comes into view:
 -remove the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-000-001)
 - on the shelf 96VU, connect the LOOP CONTROLLER (9240SI) between the connector 1HA1-AA/6B and the ground (Ref. ASM 36-22/01)
 -do a check of the impedance read on the LOOP CONTROLLER (9240SI).
 (1)
 If the impedance is more than 3 KOhms:

 -disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
 -replace the BMC-2 (1HA2) which is removed (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
 -refer to Para. 4.C.

 (2)
 If the impedance is less than 3 KOhms:
　
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