R (1) Loosen and lower the nuts that attach the GCU 1 and pull it on its
R rack to disconnect the electrical connectors.

R (2) On the ELEC panel 35VU, push, release and push again the ELEC/GEN 2
R pushbutton switch (3XU2).

R (3) Start the engine 2 (Ref. AMM TASK 71-00-00-710-003).

R D. Do this procedure:
R - after five minutes, see if there is a trip.

R (1) If there is a trip:
R - stop the engine 2 (Ref. AMM TASK 71-00-00-710-028)
R - do the trouble shooting of the generator 2 channel (Ref. TASK 24-R 20-00-810-863).

 「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 B206
 Aug 01/05 CES

R (2) If there is no trip:
R - close the circuit breaker 2XU1 (remove the safety clip and tag).
R E. 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 B207
 Aug 01/05 CES

R TASK 24-20-00-810-889

R Failure of an Opposite Channel of the Generator 2 Channel
R 1. Possible Causes_______________
R - feeders
R 2. Job Set-up Information______________________
R A. Fixtures, Tools, Test and Support Equipment
R -------------------------------------------------------------------------------R REFERENCE QTY DESIGNATION R -------------------------------------------------------------------------------
R No specific circuit breaker(s) safety clip(s)
R B. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R 24-20-00-810-862 Failure of the Generator 1 Channel R AMM 24-41-00-740-002 Operational Check of GAPCU via CFDS R AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the R External Power R AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied R from the External Power R AMM 31-60-00-860-001 EIS Start Procedure R AMM 31-60-00-860-002 EIS Stop Procedure R AMM 71-00-00-710-003 Engine Automatic Start R AMM 71-00-00-710-028 Engine Shutdown R ASM 24-22/03
R 3. Fault Confirmation__________________
R A. Test
R Not applicable.

R NOTE : As the GEN 2 was set to OFF because of a true fault, the fault

____ R confirmation is not necessary.
 「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 B208
 Aug 01/05 CESR 4. Fault Isolation

_______________
R A. If the fault symptom is identified by the upper ECAM-DU warning AC BUS 2 R FAULT and one of the two CFDS messages: R GEN 2 DELTA CURRENT OTHER CHANNEL or R GEN 2 OVERCURRENT OTHER CHANNEL
R NOTE : These CFDS messages can come into view with other CFDS messages
____ R related to a delta current or an overcurrent condition of one of R the generator channels 1 or 2.
R - in the AC/DC main power center 120VU, do a check of the bus tie feeders
R for short circuits.

R (1) If there are short circuits:
R - repair them.
　
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