5. On the MCDU, push the line key
 adjacent to the RETURN indication
 until the CFDS menu page comes
 into view.

 6. Stop the MCDU.

 (6) Decrease power to minimum idle, let the engine become stable for 5 minutes then stop the engines (Ref. TASK 71-00-00-710-028). Close circuit breaker 2WW if the flight number is entered.
R **ON A/C 051-051,
R Subtask 77-32-34-860-057-A
R C. Unbalance Acquisition on the Ground
R (1) After some seconds close the circuit breakers 2TW and 8TW.
R (2) You can get access to the CFDS menu after some seconds.
R (3) Close circuit breaker 3WW.
R NOTE : When you are in ENG VIBRATION MENU mode, vibration indications
____ R on the ECAM are not shown (amber crosses).
R (4) Increase the speed of the two engines to 80 percent N1.
R (a) Keep the engines stable at this value for 7 minutes.
R (5) Increase the speed slowly and continuously to TO N1. Keep the engines R stable at this value during 2 minutes.
 F 『 EEFF : ALL E Page 54177-32-34
 E E May 01/05 E E ECES ER 3. Push the line key adjacent to the R ENGINE UNBALANCE indication. R (Ref. Fig. 506A/TASK 77-32-34-R

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R  (6) Do the steps given below: 
R  -------------------------------------------------------------------------------
R  ACTION  RESULT 
R  -------------------------------------------------------------------------------

R  1. On one MCDU, get the SYSTEM 
R  REPORT/TEST ENG menu page. 
R  (Ref. Fig. 506A/TASK 77-32-34-
991-944-A) 
R  2. Push the line key adjacent to the 
R  EVMU indication. 
R 

991-944-A)
R 4. Push the line key adjacent to the
R BALANCING LEFT (RIGHT)
R indication.

R

R 5. To record the phase and
R displacement with the No. 1
R bearing accelerometer:
R - Push the line key adjacent to
R the START BEAR1 indication.
R

R

R 6. To stop the acquisition with the
R No. 1 bearing accelerometer:
R - Push the line key adjacent to
R the STOP BEAR1 indication.

R

F
R EEFF : 051-051, E E ECES
- The EVMU menu page comes into view.

(Ref. Fig. 506A/TASK 77-32-34-991-944-A)

- The EVMU ENGINE UNBALANCE menu page comes into view.

(Ref. Fig. 506A/TASK 77-32-34-991-944-A)

- The EVMU BALANCING LEFT (RIGHT) page comes into view.

(Ref. Fig. 506A/TASK 77-32-34-991-944-A)

- The EVMU gets the phase and the displacement and calculates the average values for these parameters.

- An asterisk comes into view adjacent to the START BEAR1 indication. (Ref. Fig. 506A/TASK 77-32-34-991-944-A) (Detail A)

- The acquisition stops.

- An asterisk comes into view adjacent to the STOP BEAR1 indication.

(Detail B)
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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R  (Ref. Fig. 506A/TASK 77-32-34-991-944-
A) 
R  7. Get a record of the results: 
R  - Push the key adjacent to the 
R  PRINT indication. 
R  8. To record the phase and  - The EVMU gets the phase and the 
R  displacement with the Turbine  displacement and calculates the 
R  Rear Frame (TRF) accelerometer:  average values for these parameters. 
R  - Push the line key adjacent to  - An asterisk comes into view adjacent 
R  the START TRF indication.  to the START TRF indication. 
R  (Ref. Fig. 506A/TASK 77-32-34-991-
944-A) 
R  (Detail C) 
R  9. To stop the acquisition with the  - The acquisition stops. 
R  TRF accelerometer:  - An asterisk comes into view adjacent 
R  - Push the line key adjacent to  to the STOP TRF indication. 
R  (Ref. Fig. 506A/TASK 77-32-34-991-
944-A) 
R  the STOP TRF indication.  (Detail D) 
R  10. Get a record of the results: 
R  - Push the line key adjacent to 
R  the PRINT indication. 
R  11. On the MCDU, push the line key 
R  adjacent to the RETURN 
R  indication until the CFDS menu 
　
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