R (1) If the fault continues:
R - do a check and repair the wiring (Ref. ASM 24-22/01) for an open
R circuit, a short to ground or a short to shield between:

R . pin A/7E of the GCU 1 and pin J3/11 of the ECU (E1-4000KS)

R . pin A/8E of the GCU 1 and pin J3/24 of the ECU (E1-4000KS)

 「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 B277
 Aug 01/05 CES

R . pin A/7E and pin A/9E of the GCU 1 (short to shield of the R wiring)

R . pin A/8E and pin A/9E of the GCU 1 (short to shield of the
R wiring).
R B. Do this operational test to make sure that the system operates correctly.

R (1) Aircraft Maintenance Configuration
R (a) Energize the aircraft electrical circuits
R (Ref. AMM TASK 24-41-00-861-002).

R (b) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)

R (Ref. AMM TASK 31-60-00-860-001).
R (2) On the ELEC panel 35VU:
R - push, release and push again the GEN 1 pushbutton switch (3XU1).

R (3) Do the operational test of the GAPCU (Ref. AMM TASK 24-41-00-740-R 002).
R (4) Start the engine 1 (Ref. AMM TASK 71-00-00-710-003).

R (5) Do this test: R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R R R R  On the ECAM control panel: - get the ELEC page.  On the lower ECAM DU: - the correct electrical parameters of the GEN 1 are shown and the AC1 busbar is supplied by the GEN 1. 
R  5. Close-up________ 

R A. Put the aircraft back to its initial configuration.
R (1) Stop the engine 1 (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, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page B278
 Aug 01/05 CESR TASK 24-20-00-810-913 R Failure of the Bus between the ECU 2 and the GCU 2 R 1. Possible Causes

_______________
R - GCU-2 (1XU2) R - wiring R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION 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 71-00-00-710-043 R ASM 24-22/01
R 3. Fault Confirmation
__________________
R A. Test
R Not applicable.

R 4. Fault Isolation

_______________ 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 Normal Engine Automatic Start Procedure
R A. If the fault symptom is identified by the maintenance message ECU
R (E2-4000KS)/ GCU2 (1XU2) and by the upper ECAM-DU warning GEN 2 FAULT:

R NOTE : You can find this message with other CFDS fault messages. First,

____ R do the trouble shooting for all the other CFDS fault messages.
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001) and (Ref. AMM
R TASK 24-22-34-400-001).

R (1) If the fault continues:
R - do a check and repair the wiring (Ref. ASM 24-22/01) for an open
R circuit, a short to ground or a short to shield between:

R . pin A/7E of the GCU 2 and pin J3/11 of the ECU (E2-4000KS)

R . pin A/8E of the GCU 2 and pin J3/24 of the ECU (E2-4000KS)

 「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 B279
 Aug 01/05 CES

R . pin A/7E and pin A/9E of the GCU 2 (short to shield of the R wiring)

R . pin A/8E and pin A/9E of the GCU 2 (short to shield of the
R wiring).
R B. Do this operational test to make sure that the system operates correctly.
　
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