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 a If the fault continues:
_
 - repair the wiring between the pin A/A2 of the GLC1 auxiliary control relay (4XU1) and the pin B/24 of the GLC1 (9XU1) (Ref. ASM 24-22/02).
 4 If there is no 28VDC at the pin B/3 of the BTC1 (11XU1):
_ - replace the RELAY-BUS TIE (30XU1).
 a If the fault continues:
_
 - do a check and repair the wiring (Ref. ASM 24-22/02) between: . the pin B/22 of the GLC1 (9XU1) and the pin A/B2 of the bus tie relay (30XU1) . the pin A/B3 of the bus tie relay (30XU1) and the pin B/3 of the BTC1 (11XU1).
 (2) If the circuit breaker is open:
 - close it.
 (a) If the circuit breaker trips again:
 - do a check of the wiring for a short to ground between the ELEC/GEN1/OFF/BTC1 SPLY circuit breaker (5XU) and the pin B/3 of the BTC1 (11XU1) (Ref. ASM 24-22/02) and (Ref. ASM 24-23/02).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 249
 201-299, 301-399, Aug 01/05 CES 1 If the wiring is not correct:

_ - repair it.
 2 If the wiring is correct:
_
 - replace the C/B-ELEC/GEN1/OFF/BTC1 SPLY (5XU).
 (3) If the fault continues:
 - continue this fault isolation procedure from step 4.B.
 B. Do a check of the status of the ELEC/GEN2 OFF/BTC2 SPLY 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:
 - do a check and repair the wiring between the pin B/5 of the BTC2 (11XU2) and the pin AA/9C of the GCU2 (1XU2) (Ref. ASM 24-22/03).
 1 If the fault continues:
_
 - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001) and (Ref. AMM TASK 24-22-34-400-001).
 (b) If the fault continues:
 - do a check for 28VDC.
 1 If there is no 28VDC at the pin A/A2 of the GLC2 auxiliary
_
 control relay (4XU2):

 - replace the RELAY-GLC 2 AUX CTL (4XU2).
 a If the fault continues:
_
 - repair the wiring between the pin 2 of the ELEC/GEN2 OFF/BTC2 SPLY circuit breaker (8XU) and the pin A/A3 of the GLC2 auxiliary control relay (4XU2) (Ref. ASM 24-23/02).
 2 If there is no 28VDC at the pin B/22 of the GLC2 (9XU2):
_
 - replace the GLC-2 (9XU2) (Ref. AMM TASK 24-22-55-000-001) and (Ref. AMM TASK 24-22-55-400-002).
 a If the fault continues:
_
 - repair the wiring between the pin A/A2 of the GLC2 auxiliary control relay (4XU2) and the pin B/24 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).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 250
 201-299, 301-399, Aug 01/05 CES a If the fault continues:

_
 - do a check and repair the wiring (Ref. ASM 24-22/03) between: . the pin B/22 of the GLC2 (9XU2) and the pin A/B2 of the smoke relay (30XU2) . the pin A/B3 of the smoke relay (30XU2) and the pin B/3 of the BTC2 (11XU2).
 (2) If the circuit breaker is open:
 - close it.
 (a) If the circuit breaker trips again:
 - do a check of the wiring for a short to ground between the ELEC/GEN2/OFF/BTC2 SPLY circuit breaker (8XU) and the pin B/3 of the BTC2 (11XU2) (Ref. ASM 24-22/03).
 1 If the wiring is not correct:
_ - repair it.
 2 If the wiring is correct:
_ - replace the C/B-ELEC/GEN2/OFF/BTC2 SPLY (8XU).
R **ON A/C 401-499,

R A. If the test confirms the fault:
R - do a check of the status of the ELEC/GEN1/OFF/BTC1 SPLY circuit breaker
R (5XU).

R (1) If the circuit breaker is closed:
R - replace the BTC-1 (11XU1) (Ref. AMM TASK 24-22-55-000-001) and
R (Ref. AMM TASK 24-22-55-400-002).

R (a) If the fault continues:
R - do a check and repair the wiring between the pin B/5 of the
R BTC1 (11XU1) and the pin AA/9A of the GCU1 (1XU1) (Ref. ASM 24-R 22/02).

R  1_  If the fault continues:
R  - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) 
R  and (Ref. AMM TASK 24-22-34-400-001). 

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 EPC auxiliary
R control relay (5XG):
R - replace the RELAY-EPC AUX CTL (5XG).

R a_ If the fault continues:
　
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 電源 3(135)