- replace the GCU-APU (1XS) (Ref. AMM TASK 24-23-34-000-001) and (Ref. AMM TASK 24-23-34-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 063-099, 106-149, 153-199, 206-299, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page A212
 301-399, Aug 01/05 CES NOTE : Do not remove the APU GCU before you do the other steps of

____
 the trouble shooting.

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 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) De-energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-862-002).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page A213
 201-299, 301-399, Aug 01/05 CES

 TASK 24-20-00-810-845

 Failure of the APU GLC
 1. Possible Causes
_______________
 - GLC-APU (3XS)

 - GCU-APU (1XS)

 - wiring

 - RELAY-APU GLC AUX CTL (4XS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-23-34-000-001 Removal of the GCU-APU (1XS)
 AMM 24-23-34-400-001 Installation of the GCU-APU (1XS)
 AMM 24-23-55-000-001 Removal of the APU GLC (3XS)
 AMM 24-23-55-400-001 Installation of the APU GLC (3XS)
 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 ASM 24-23/02
 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 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 GCU-APU (1XS) (Ref. AMM TASK 24-23-34-000-001) and (Ref. AMM TASK 24-23-34-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page A214
 201-299, 301-399, Aug 01/05 CES

 (2) If the fault continues:
 - do a check of the wiring for open circuit between the APU GLC pin B/3 and the APU GLC auxiliary control relay (4XS) pin B1 through the EPC (3XG), then between the APU GLC auxiliary control relay (4XS) pin B2 and the circuit breaker (5XU) through the 5XG, 9XU1, 9XU2, 11XU1, 11XU2 (Ref. ASM 24-23/02).
 (a) If the wiring is not correct:

 - repair it.

 (b) If the wiring is correct:

 - 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) De-energize the aircraft electrical circuits from the APU (Ref. AMM TASK 24-41-00-862-002).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page A215
 201-299, 301-399, Aug 01/05 CES

 TASK 24-20-00-810-846

 Failure of the Electrical Wiring between the APU GCU and the APU GLC
 1. Possible Causes
_______________
 - GLC-APU (3XS)

 - GCU-APU (1XS)

 - wiring

 - RELAY-APU GLC AUX CTL (4XS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-20-00-810-838 Failure of the Internal Circuit Breaker of the APU
　
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