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. Test Do the Operational Test of the GPCU (Ref. AMM TASK 24-41-00-740-002)
「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 ∞∞24-40-00∞∞∞∞∞∞∞∞∞∞Page 201
Aug 01/05 CES
4. Fault Isolation
_______________
A. If the test gives the maintenance message CHECK EP PHASE SEQ and if on the overhead panel, on the panel 35VU, the AVAIL legend of the EXT PWR pushbutton switch is on:
- do a check of the external power feeder wires for cross-connection between the pins A, B, C of the external power receptacle (20XG) and the pins A/K, A/L, A/M of the EPC (Ref. ASM 24-41/01).
(1) If the wiring is not correct:
- repair it.
(2) If the wiring is correct:
- replace the external power unit.
(3) If the fault continues:
- do a check of the wiring for wire cross-connection between respectively the pins B/5C, B/6D, B/7C of the GPCU and the pins A/J, A/H, A/G of the EPC, through the GND PWR PROT circuit breaker (2XG) (Ref. ASM 2441/01).
(4) If the fault continues:
- replace the GPCU (1XG), (Ref. AMM TASK 24-41-34-000-001) and (Ref. AMM TASK 24-41-34-400-001).
B. Make sure that the aircraft electrical circuits operate correctly in ground configuration.
(1) Energize the aircraft electrical circuits from the external power (Ref. AMM TASK 24-41-00-861-002).
(2) De-energize the aircraft electrical circuits from the external power (Ref. AMM TASK 24-41-00-862-002).
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.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞24-40-00∞∞∞∞∞∞∞∞∞∞Page 202
201-299, 301-399, Aug 01/05 CES
TASK 24-40-00-810-802
Failure of the GPCU (Circuit Breaker Open)
1. Possible Causes
_______________
- GPCU (1XG)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 24-41-00-740-002 Operational Test of the Ground power Control Unit (GPCU) 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 AMM 24-41-34-000-001 Removal of the Ground Power Control Unit (GPCU) (1XG) AMM 24-41-34-400-001 Installation of the Ground Power Control Unit (GPCU)
(1XG)
ASM 24-41/01
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. Test Do the Operational Test of the GPCU (Ref. AMM TASK 24-41-00-740-002)
「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, ∞∞24-40-00∞∞∞∞∞∞∞∞∞∞Page 203
201-299, 301-399, Aug 01/05 CES
4. Fault Isolation
_______________
A. If the test gives the maintenance message CHECK GPCU PIN C2, C/B 4XG, 6XG, 11XG, 12XG WIRING, and the warning AVAIL LIGHT NOT ILLUMINATED:
- do a check of the status of the 7.5 A circuit breaker on the front face of the GPCU.
(1) If the circuit breaker is open:
- close it.
(a) If the circuit breaker trips:
- do a check of the wiring for short to ground between the pin C/2 of the GPCU and successively the circuit breakers (4XG), (6XG), (11XG), (12XG) (Ref. ASM 24-41/01).
1_ If the wiring is not correct:
- repair it.
2_ If the wiring is correct:
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 電源 3(83)
