APU AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the APU
3. Fault Confirmation
__________________
A. Test
Not applicable.
NOTE : As the APU GEN was set to OFF because of a true failure, the fault
____
confirmation is not necessary.
4. Fault Isolation
_______________
A. If the fault symptom is identified by the CFDS message GLC APU (3XS)/ RELAY (4XS) and the upper ECAM-DU warning APU GEN FAULT:
- replace the GLC-APU (3XS) (Ref. AMM TASK 24-23-55-000-001) and (Ref. AMM TASK 24-23-55-400-001).
(1) If the fault continues:
- replace the RELAY-APU GLC AUX CTL (4XS).
B. Make sure that the aircraft electrical circuits operate correctly in APU configuration.
(1) Energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-861-002).
(2) Let the APU generator operate for five minutes.
(3) De-energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-862-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 106-149, 229-299, 303-399, 401-499, ∞∞24-23-00∞∞∞∞∞∞∞∞∞∞Page 255
Aug 01/05 CES
TASK 24-23-00-810-827
Failure of the GAPCU Point-Of-Regulation Wiring or the Feeders to the APU GLC
Contactor
1. Possible Causes
_______________
- GAPCU (24XG)
- wiring
- feeders
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the APU AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the APU AMM 24-41-34-000-001 Removal of the Ground Auxiliary Power Control Unit (GAPCU) (24XG) AMM 24-41-34-400-001 Installation of the Ground Auxiliary Power Control Unit (GAPCU) (24XG) ASM 24-23/01
3. Fault Confirmation
__________________
A. Test
Not applicable.
NOTE : As the APU GEN was set to OFF because of a true failure, the fault
____
confirmation is not necessary.
4. Fault Isolation
_______________
A. If the fault symptom is identified by the CFDS message WRG: GEN APU POR/ GAPCU (24XG)/WRG: FEEDER and the upper ECAM-DU warning APU GEN FAULT:
- do a check of the Point-Of-Regulation (POR) sense wiring (Ref. ASM 24-23/01) for a short to ground, a short circuit or an open circuit between: . pin D of the APU GLC (3XS) and pin A/15G of the GAPCU . pin E of the APU GLC and pin A/15H of the GAPCU . pin F of the APU GLC and pin A/14G of the GAPCU . POR neutral connection and pin A/14H of the GAPCU.
(1) If the wiring is not correct:
- repair or replace as necessary.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 106-149, 229-299, 303-399, 401-499, ∞∞24-23-00∞∞∞∞∞∞∞∞∞∞Page 256
Aug 01/05 CES
(2) If the wiring is correct:
- replace the GAPCU (24XG) (Ref. AMM TASK 24-41-34-000-001) and (Ref. AMM TASK 24-41-34-400-001).
(3) If the fault continues:
- do a check and repair the feeders (Ref. ASM 24-23/01) for an open circuit or a high resistance condition between: . terminal T1 of the APU generator and terminal D of the APU GLC (3XS) . terminal T2 of the APU generator and terminal E of the APU GLC . terminal T3 of the APU generator and terminal F of the APU GLC . terminal N of the APU generator and airframe.
B. Make sure that the aircraft electrical circuits operate correctly in APU configuration.
(1) Energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-861-002).
(2) Let the APU generator operate for five minutes.
(3) De-energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-862-002).
AC EMERGENCY GENERATION (CSM/G,GCU) - FAULT ISOLATION PROCEDURES
________________________________________________________________
TASK 24-24-00-810-801
Failure of the RAT/EMER GEN/FAULT Indication Circuit (Linked to the BCL1)
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(25)
