4. Fault Isolation
_______________
A. If the test gives the maintenance message GPCU and, on the panel 108VU, the EXT PWR light is not on:
- do a check of the status of the ELEC/GPCU circuit breaker (7XG):
(1) If the circuit breaker is closed:
- do a check for 28VDC at the pin B/15A of the GPCU.
(a) If there is not 28VDC:
- do a check and repair the wiring between the circuit breaker (7XG) and the pin B/15A of the GPCU (Ref. ASM 24-41/01)
(b) If there is 28VDC:
- replace the GPCU (1XG) (Ref. AMM TASK 24-41-34-000-001) and (Ref. AMM TASK 24-41-34-400-001).
(2) If the circuit breaker is open:
- close it.
(a) If it trips:
- do a check of the wiring for short to ground between the circuit breaker and the pin B/11A of the GPCU.
1 If the wiring is not correct:
_
- repair it.
2 If the wiring is correct:
_
- replace the GPCU (1XG) (Ref. AMM TASK 24-41-34-000-001) and (Ref. AMM TASK 24-41-34-400-001).
3 If the fault continues
_
- replace the 7XG.
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 210
201-299, 301-399, Aug 01/05 CES
R **ON A/C ALL
TASK 24-40-00-810-806
The AVAIL Legend of the ELEC/EXT PWR Pushbutton Switch Stays off when the EXT PWR Energizes the Aircraft
1. Possible Causes
_______________
- BOARD-ANN LT TEST & INTFC (10LP) R - GAPCU (24XG) R - RELAY (21XG) R - P/BSW-ELEC/EXT PWR (10XG)
- 22XU1
- RELAY (21XG)
- wiring
- LAMP
- P/BSW-ELEC/EXT PWR (10XG)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 24-22-33-000-001 Removal of the EGIU-1(2) (22XU1, 22XU2)
AMM 24-22-33-400-002 Installation of the EGIU-1(2) (22XU1, 22XU2)
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power R AMM 24-41-34-000-001 Removal of the Ground Auxiliary Power Control Unit R (GAPCU) (24XG) R AMM 24-41-34-400-001 Installation of the Ground Auxiliary Power Control R Unit (GAPCU) (24XG)
AMM 33-14-00-710-001 Operational Test of the Annunciator Light Test System in the Cockpit AMM 33-14-33-000-001 Removal of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) AMM 33-14-33-400-001 Installation of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) ASM 24-41/01
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞24-40-00∞∞∞∞∞∞∞∞∞∞Page 211
Aug 01/05 CES
3. Fault Confirmation
__________________
A. Test
(1) Energize the aircraft electrical circuits from the external power (Ref. AMM TASK 24-41-00-861-002).
NOTE : Energization of the aircraft is correct but, during the
____ procedure given at Para. 3.D., make sure that: - on the panel 108VU : the EXT PWR/NOT IN USE indicator light
and the EXT PWR/AVAIL caution light come on.
- on the panel 35VU : the AVAIL legend of the EXT PWR pushbutton switch stays off (Ref. AMM TASK 33-14-00-710-001).
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
A. If the test confirms the fault:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(86)
