(2) 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 231
May 01/99R
CES
TASK 24-50-00-810-810
Failure of the AC BUS2 with External Power in Use
1. Possible Causes_______________
R R R R R - BTC-2 (11XU2) - RELAY-EPC AUX CTL (5XG) - RELAY-GLC 2 AUX CTL (4XU2) - GLC-2 (9XU2) - RELAY-SMOKE (30XU2) - wiring - C/B-ELEC/EXT PWR CTL (11XG)
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM AMM AMM AMM AMM ASM 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 24-22/0324-23/02 24-41/01 Removal of the Contactors (9XU1, 9XU2, 11XU1, 11XU2)Installation of the Contactors (9XU1, 9XU2, 11XU1, 11XU2)Energize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerEIS 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
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/EXT PWR/CTL 11XG X29
B. If the test confirms the fault:
- do a check of the status of the circuit breaker (11XG)
(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
R (b) If the fault continues:
R - do a check for 28VDC:
R 1_ If there is no 28VDC at the pin A/D2 of the relay (5XG):
R - replace the RELAY-EPC AUX CTL (5XG).
R a_ if the fault continues:
R - repair the wiring between the C/B-ELEC/EXT PWR CTL (11XG)
R and the relay (5XG) (Ref. ASM 24-41/01).
R 2_ 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 pin A/D2 of the relay (5XG)
R and the pin A/A3 of the relay (4XU2) (Ref. ASM 24-22/03)
R and (Ref. ASM 24-23/02).
「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 233
May 01/99 CESR 3_ if there is no 28VDC at the pin B/6 of the GLC2 (9XU2):R - replace the GLC-2 (9XU2).
R a_ if the fault continues:R - repair the wiring between the pin A/A2 of the relay R (4XU2) and the pin B/8 of the GLC2 (9XU2) (Ref. ASM 24-
22/03).
R 4_ if there is no 28VDC at the pin B/3 of the BTC2 (11XU2):
R - replace the RELAY-SMOKE (30XU2).
R a_ if the fault continues:
R - do a check and repair the wiring between:
R . the pin B/6 of the GLC2 (9XU2) and the relay (30XU2) R (Ref. ASM 24-22/03) ,
R . the relay (30XU2) and the pin B/3 of the BTC2 (11XU2) R (Ref. ASM 24-22/03).
(2) If the circuit breaker is open:
- close it.
(a) If the circuit breaker trips: R - do a check of the wiring for a short to ground between the R circuit breaker (11XG) and the pin B/3 of the BTC2 (Ref. ASM R 24-22/03) and (Ref. ASM 24-23/02).
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