2.
 On the MCDU 1:

-push the MCDU MENU mode key.
3.
 On the panel 121VU: - open the circuit breaker 2TW.

4.
 On the MCDU 1:

-push the line key adjacent to the CFDS indication.
5. On the MCDU 1:
-push the line key adjacent to the SYSTEM REPORT/TEST indication.
 6. On the MCDU 1:
-set a system menu. To do this, push the line key adjacent to the system indication.
 7. On the MCDU 1:
-push the line key adjacent to the RETURN indication.
8. On the panel 121VU:
 -close the circuit breaker 2TW.
 9. On the MCDU 1:
-
the MCDU 1 is on.

On the MCDU 1:

-
the MCDU MENU page comes into view.

On the MCDU 1:
-
after 5s approximately, on the MCDU MENU page, the CFDS indication goes out of view.

 -
after 30s approximately, on the MCDU MENU page, the CFDS indication comes into view again.

On the MCDU 1:
-
the CFDS BACK-UP MODE page comes intoview.

On the MCDU 1:

-
the SYSTEM REPORT/TEST page comesinto view.

On the MCDU 1:

-
the menu page of the set system comesinto view.

On the MCDU 1:

-
the SYSTEM REPORT/TEST page comesinto view.

On the MCDU 1:
R 1EFF : 001-049, 051-099, 101-105, 151-154, 1 31-32-00Page 502 1201-207, 1May 01/05 1 1 1CES 1

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
-push the line key adjacent to  - the MCDU MENU page comes into view. the RETURN indication until the CFDS MENU page comes into view.
 5. Close-up
________ Subtask 31-32-00-860-100
 A. Put the aircraft back to its initial configuration.
 (1)
 De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 (2)
 Put the system back to the serviceable condition.

 (3)
 Put the aircraft back to the serviceable condition.

R 1EFF : 001-049, 051-099, 101-105, 151-154, 1 31-32-00Page 503 1201-207, 1May 01/05 1 1 1CES 1

R  **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
 TASK 31-32-00-710-002-A
 Operational Test of the Back-up Mode
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
24-41-00-861-002  Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 31-32-00-860-008 Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page
 3. Job Set-up
__________
R  **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499, Post SB 31-1163 For A/C 155-156,208-209, Subtask 31-32-00-861-082
 A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 31-32-00-865-088
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------
PANEL DESIGNATION  IDENT. LOCATION
 -------------------------------------------------------------------------------
49VU AUTO FLT/MCDU/1 11CA1 B01 121VU CFDS/CFDIU/SPLY 2TW J18 121VU CFDS/CFDIU/BACK/UP 8TW J17
R 1EFF : 106-149, 155-199, 208-299, 301-399, 1 31-32-00Page 504 1401-499, 1Aug 01/05 1 1 1CES 1

R  **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
 4. Procedure
_________
R  **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499, Post SB 31-1163 For A/C 155-156,208-209, Subtask 31-32-00-740-059
 A. Check the P/N of the CFDIU.
 (1) Do the procedure to get the SYSTEM REPORT/TEST INST page (Ref. TASK 31-32-00-860-008).
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
On the MCDU:  - The CFDIU MENU page comes into view.
 1.
 Push the line key adjacent to the
 CFDIU indication.

 2.
 Push the line key adjacent to the  - The CFDIU LRU IDENTIFICATION page LRU IDENTIFICATION indication. comes into view.

 3.
　
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