「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 : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C250
 Aug 01/05 CES

R  (2) If the circuit breakers are closed: 
R  - do a check and repair the feeders of the AC 1 (1XP) and AC 2 (2XP) 
R  bus bar for a short to ground, or a short circuit. 
R  (a) If the fault continues: 
R  - replace the GAPCU (24XG) (Ref. AMM TASK 24-41-34-000-001) and 
R  (Ref. AMM TASK 24-41-34-400-001). 
R  B. Do this procedure to make sure that the system operates correctly: 
R  (1) Energize the aircraft electrical circuits from the APU (Ref. AMM TASK 
R  24-41-00-861-002). On the upper ECAM DU, the warning APU GEN OVERLOAD 
R  is not shown and there is no trip. 
R  (2) De-energize the aircraft electrical circuits from the APU (Ref. AMM 
R  TASK 24-41-00-862-002).

R TASK 24-20-00-810-945

R Short Circuits of the Feeders between the APU Generator and the APU GLC R 1. Possible Causes
_______________
R - GEN-APU (8XS) R - GAPCU (24XG) R - feeders
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 24-23-51-000-001 R AMM 24-23-51-400-001 R AMM 24-41-00-861-002 R R AMM 24-41-00-862-002 R R AMM 24-41-34-000-001 R R AMM 24-41-34-400-001 R R ASM 24-23/01
R 3. Fault Confirmation
__________________
R A. Test
R Not applicable.

Removal of the APU Generator 8XS Installation of the APU Generator 8XS Energize the Aircraft Electrical Circuits from the APU De-energize the Aircraft Electrical Circuits Supplied from the APU Removal of the Ground Auxiliary Power Control Unit (GAPCU) (24XG) Installation of the Ground Auxiliary Power Control Unit (GAPCU) (24XG)
R NOTE : As the APU GEN was set to OFF because of a true failure, the fault
____ R confirmation is not necessary.
R 4. Fault Isolation
_______________
R A. If the fault symptom is identified by the CFDS message WRG: GEN APU
R FEEDER and the upper ECAM-DU warning APU GEN FAULT:
R - do a check of the feeders (Ref. ASM 24-23/01) for a short circuit or a
R short to airframe between:

R . terminal T1 of the APU generator and terminal D of the APU GLC (3XS)

R . terminal T2 of the APU generator and terminal E of the APU GLC

R . terminal T3 of the APU generator and terminal F of the APU GLC.

R (1) If the wiring is not correct:
R - repair or replace the feeders 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 : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page C252
 Aug 01/05 CES

R  (2) If the wiring is correct: 
R  - replace the GEN-APU (8XS) (Ref. AMM TASK 24-23-51-000-001) and 
R  (Ref. AMM TASK 24-23-51-400-001). 
R  (a) If the fault continues: 
R  - replace the GAPCU (24XG) (Ref. AMM TASK 24-41-34-000-001) and 
R  (Ref. AMM TASK 24-41-34-400-001). 
R  B. Make sure that the aircraft electrical circuits operate correctly in APU 
R  configuration. 
R  (1) Energize the aircraft electrical circuits from the APU (Ref. AMM TASK 
R  24-41-00-861-002). 
R  (2) Let the APU generator operate for five minutes to make sure that it 
R  operates correctly. 
R  (3) De-energize the aircraft electrical circuits from the APU (Ref. AMM 
R  TASK 24-41-00-862-002).

R TASK 24-20-00-810-947

R Failure of the Signal from the APU Control Relay to the GAPCU
R 1. Possible Causes_______________
R - GAPCU (24XG)
R - RELAY-APU AVAIL (6KD)
R - wiring
R - DIODE MODULE (1162VD)
R - ELEC/GEN1/OFF/BTC1 SPLY (5XU)

R 2. Job Set-up Information______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 24-41-00-740-002 R AMM 24-41-34-000-001 R R AMM 24-41-34-400-001 R R ASM 24-22/02 R ASM 24-23/02 R ASM 49-61/01
R 3. Fault Confirmation
__________________
R A. Test Operational Check of GAPCU via CFDS Removal of the Ground Auxiliary Power Control Unit (GAPCU) (24XG) Installation of the Ground Auxiliary Power Control Unit (GAPCU) (24XG)
　
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