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).
 「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 : 401-499, ∞∞24-21-00∞∞∞∞∞∞∞∞∞∞Page 261
 Aug 01/05 CES

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.
 「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 : 401-499, ∞∞24-21-00∞∞∞∞∞∞∞∞∞∞Page 262
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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:
　
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