R TASK 24-20-00-810-898 R IDG 1 Phase Reversal R 1. Possible Causes
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R - IDG (4000XU) R - GCU-1 (1XU1) R - wiring
R 2. Job Set-up Information
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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 24-22/01
R 3. Fault Confirmation
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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
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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, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page B229
Aug 01/05 CES
R A. If the fault symptom is identified by the CFDS message IDG1
R (E1-4000XU)/GCU1 (1XU1)/WRG: POR and the upper ECAM-DU warning GEN 1
R FAULT:
R - do an electrical resistance test of the IDG 1 exciter field between
R pins A/9 and A/10 (8.4 ohms plus or minus 0.84 ohms) (Ref. ASM 24-R 22/01).
R (1) If the resistance values are out of the specified limits:
R - replace the engine 1 IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040)
R and (Ref. AMM TASK 24-21-51-400-040).
R (2) If the resistance values are in the specified limits:
R - do an electrical resistance test of the IDG 1 PMG stator (Ref. ASM
R 24-22/01) between:
R . pins B/12 and B/13 (1 ohm plus or minus 0.05 ohm)
R . pins B/12 and B/14 (1 ohm plus or minus 0.05 ohm)
R . pins B/13 and B/14 (1 ohm plus or minus 0.05 ohm).
R (a) If the resistance values are out of the specified limits:
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 resistance values are in the specified limits:
R - do a check of the wiring of the PMG and exciter field (Ref. ASM
R 24-22/01) for a short to ground, a short circuit or an open
R circuit between:
R . pin B/12 of the IDG 1 and pin C/10 of the GCU 1
R . pin B/13 of the IDG 1 and pin C/11 of the GCU 1
R . pin B/14 of the IDG 1 and pin C/9 of the GCU 1
R . pins C/10, C/11, C/9 and C/7 of the GCU 1 (short to shield of R the PMG wiring)
R . pin A/9 of the IDG 1 and pin C/12 of the GCU 1
R . pin A/10 of the IDG 1 and pin C/13 of the GCU 1
R . pins C/12, C/13 and pin C/7 of the GCU 1 (short to shield of R the exciter field).
R 1_ If the wiring is not correct:
R - repair or replace as necessary.
R 2_ If the wiring is correct:
R - do a check of the Point-Of-Regulation sense wiring (Ref. ASM
R 24-22/01) for a short to ground, a short circuit or an open
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