R 5. Close-up
________ R A. Put the aircraft back to its initial configuration. R (1) Stop the engine 2 (Ref. AMM TASK 71-00-00-710-028). R (2) Do the EIS stop procedure
R (Ref. AMM TASK 31-60-00-860-002).
R (3) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY R potentiometers to OFF. R (4) De-energize the aircraft electrical circuits
R (Ref. AMM TASK 24-41-00-862-002).
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R TASK 24-21-00-810-826
R Failure of the IDG 1 Control Circuits or of its Wiring to the GCU 1 R 1. Possible Causes
_______________
R - IDG (4000XU) R - GCU-1 (1XU1) R - wiring
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 24-21-51-000-040 R R AMM 24-21-51-400-040 R R AMM 24-22-34-000-001 R AMM 24-22-34-400-001 R AMM 24-41-00-740-002 R AMM 24-41-00-861-002 R R AMM 24-41-00-862-002 R R AMM 31-60-00-860-001 R AMM 31-60-00-860-002 R AMM 71-00-00-710-003 R AMM 71-00-00-710-028 R ASM 24-21/01 R ASM 24-22/01
R 3. Fault Confirmation
__________________
R A. Test
R Not applicable.
Removal of the Integrated Drive Generator -IDG 1(2),(4000XU) Installation of the Integrated Drive Generator -IDG 1(2),(4000XU) Removal of the GCU-1(2) (1XU1, 1XU2) Installation of the GCU-1(2) (1XU1, 1XU2) Operational Check of GAPCU via CFDS Energize the Aircraft Electrical Circuits from the External Power De-energize the Aircraft Electrical Circuits Supplied from the External Power EIS Start Procedure EIS Stop Procedure Engine Automatic Start Engine Shutdown
R NOTE : As the GEN 1 was set to OFF because of a true failure, the fault
____ R confirmation is not necessary.
R 4. Fault Isolation
_______________
R CAUTION : BEFORE YOU START THE CHECK OF IDG WIRING THAT INCLUDES CONNECTORS,
_______ R EXAMINE EACH CONNECTOR TO MAKE SURE THAT THERE IS NO OIL IN IT. R IF YOU FIND OIL, CLEAN THE CONNECTOR AND CONNECT IT AGAIN. R IF THE FAILURE CONTINUES, DO THE TROUBLE SHOOTING PROCEDURE AS R GIVEN BELOW.
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R A. If the fault symptom is identified by the CFDS message IDG1 (E1-4000XU)/
R GCU1 (1XU1) and the upper ECAM-DU warning GEN 1 FAULT:
R (1) Do the trouble shooting for all ECU messages that come into view with
R the CFDS message IDG1 (E1-4000XU)/ GCU1 (1XU1).
R (a) If there are no ECU messages, or if the fault continues after the
R trouble shooting for ECU messages:
R - replace the engine 1 IDG (4000XU) (Ref. AMM TASK 24-21-51-000-R 040) and (Ref. AMM TASK 24-21-51-400-040).
R (b) If the fault continues:
R - replace the GCU-1 (1XU1) (Ref. AMM TASK 24-22-34-000-001) and
R (Ref. AMM TASK 24-22-34-400-001).
R (2) Do the BITE test of the GAPCU (Ref. AMM TASK 24-41-00-740-002).
R (a) If the BITE test gives the message TEST FAILED:
R - push the line key adjacent to the TEST FAILED message.
R 1_ If the maintenance message GCU1 (1XU1) comes into view:
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 BITE test gives the message TEST PASSED:
R - do an electrical resistance test of the IDG 1 servo-valve
R speed-control between pin B/1 and pin B/2 (75 ohms plus or
R minus 6 ohms) (Ref. ASM 24-21/01).
R 1_ If the resistance values are out of the specified limits:
R - replace the engine 1 IDG (4000XU) (Ref. AMM TASK 24-21-51-R 000-040) and (Ref. AMM TASK 24-21-51-400-040).
R 2_ If the resistance values are in the specified limits:
R - do a check of the wiring of the servo-valve speed control
R (Ref. ASM 24-21/01) for a short to ground, a short circuit,
R an open circuit or a high resistance condition between:
R . pin B/1 of the IDG 1 and pin B/11J of the GCU 1
R . pin B/2 of the IDG 1 and pin B/11H of the GCU 1.
R a_ If the wiring is not correct:
R - repair or replace as necessary.
R b_ If the wiring is correct:
R - replace the engine 1 IDG (4000XU) (Ref. AMM TASK 24-21-R 51-000-040) and (Ref. AMM TASK 24-21-51-400-040).
R c_ If the fault continues: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 2(119)
