1 If the wiring is not correct:
_ - repair it.
 2 If the wiring is correct:
_ R - replace the circuit breaker (11XG).
 C. Do this test to make sure that the system operates correctly:
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
On the ECAM control panel:  On the lower ECAM display unit:
 - push the ELEC key to get the ELEC  - the normal configuration comes into page. view.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 (1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
 (a) De-energize the aircraft electrical circuits (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 : ALL ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 234
 May 01/99 CES

 TASK 24-50-00-810-811

 Failure of the AC BUS 2 with the APU Generator in Operation
 1. Possible Causes_______________
R R R R  - BTC-2 (11XU2) - RELAY-GLC 2 AUX CTL (4XU2) - GLC-2 (9XU2) - RELAY-SMOKE (30XU2) - wiring - CB-ELEC/GEN2/OFF/BTC2 SPLY (8XU)
 2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
R  AMM AMM AMM AMM AMM ASM ASM  24-22-55-000-001 24-22-55-400-002 24-41-00-861-002 24-41-00-862-002 31-60-00-860-001 24-22/02 24-22/03 Removal of the Contactors (9XU1, 9XU2, 11XU1, 11XU2)Installation of the Contactors (9XU1, 9XU2, 11XU1, 11XU2)Energize the Aircraft Electrical Circuits from the APUDe-energize the Aircraft Electrical Circuits Supplied from the APUEIS Start Procedure
 3. Fault Confirmation__________________
 A. Job Set-up
 (1) Aircraft Maintenance Configuration
 (a) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
 (b) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

 B. Test

 (1) Do this test:
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the ELEC panel 35VU:  On the ELEC panel 35VU:
 - release the GEN1 and GEN2  - the OFF legends of the GEN1 and GEN2
 pushbutton switches.  pushbutton switches come on.
 On the upper ECAM display unit:
 - the ELEC AC BUS 2 FAULT warning comes
 into view.
 4. Fault Isolation_______________

 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
122VU ELEC/GEN2/OFF/BTC2 SPLY 8XU T31
 B. If the test confirms the fault:
 - do a check of the status of the circuit breaker (8XU).
 (1) If the circuit breaker is closed:
 - replace the BTC-2 (11XU2) (Ref. AMM TASK 24-22-55-000-001) and (Ref. AMM TASK 24-22-55-400-002).
 (a) If the fault continues: R - do a check and repair the wiring between the pin B/5 of the R BTC2 and the pin A/9C of the GCU2 (Ref. ASM 24-22/03).
R (b) If the fault continues:
R - do a check for 28VDC:

R 1_ If there is no 28VDC at the pin A/A2 of the relay (4XU2):
R - replace the RELAY-GLC 2 AUX CTL (4XU2).

R a_ if the fault continues:
R - repair the wiring between the CB-ELEC/GEN2/OFF/BTC2 SPLY
R (8XU) and the pin A/A3 of the relay (4XU2) (Ref. ASM 24-R 22/03).

R 2_ If there is no 28VDC at the pin B/6 of the GLC2 (9XU2):
R - replace the GLC-2 (9XU2).

 「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 : ALL ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 236
 May 01/99 CES a if the fault continues:

_
 - repair the wiring between the pin A/A2 of the relay (4XU2) and the pin B/8 of the GLC2 (9XU2) (Ref. ASM 24-22/03).
 3 If there is no 28VDC at the pin B/3 of the BTC2 (11XU2):
_ - replace the RELAY-SMOKE (30XU2).
 a if the fault continues:
_
 - do a check and repair the wiring between: . the pin B/6 of the GLC2 (9XU2) and the relay (30XU2) (Ref. ASM 24-22/03) , . the relay (30XU2) and the pin B/3 of the BTC2 (11XU2) (Ref. ASM 24-22/03).
　
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