Subtask 31-60-00-710-054
 D. Manual DMC 1 and 2 to DMC 3 Switching
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1.
 On the overhead C/B panel 49VU: - open the circuit breaker 10WT1.

2.
 On the center pedestal, on the SWITCHING panel 8VU:

 -set the EIS DMC selector switch to CAPT/3.
3. On the panel 301VU:
 -push and release the PFD/ND/XFR pushbutton switch.
-again push and release the PFD/ND/XFR pushbutton switch.
4. On the rear C/B breaker panel 121VU:
 - open the circuit breaker 10WT3.
-the diagonal line comes into view on the upper ECAM DU and on the CAPT PFD and ND.
 - on the lower ECAM DU, the ENGINE WARNING image replaces the system image and shows this indication:
 * EIS DMC 1 FAULT - on the glareshield:
 * the MASTER CAUT lights come on.
 -you can hear the single chime.
-
the diagonal line goes out of viewand the DUs show their initial image.

- on the PFD and the ND, the imageschange position.

-
the DUs go to their initialconfiguration.

-
the diagonal line comes into view on the upper ECAM DU and on the CAPT ND and PFD.

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ACTION RESULT -------------------------------------------------------------------------------
5.
 On the rear C/B breaker panel 122VU:

 - open the circuit breaker 17XN1.

6.
 On the panels 121VU and 122VU:

 -close the circuit breaker 10WT3 and then the 17XN1.
7. On the overhead C/B panel 49VU:
 -close the circuit breaker
10WT1.

8. On the SWITCHING panel 8VU:
 -set the EIS DMC selector switch to NORM.
 9. On the rear C/B panel 121VU:
 - on the lower ECAM DU, the ENGINE WARNING image comes into view and shows the indication:
 *
 EIS DMC 1 FAULT

 *
 DMC 3 FAULT

- on the upper ECAM DU and on the CAPT PFD and ND:
 * the diagonal line goes out of view
 and the DUs show their image. - on the upper ECAM DU:
 *
 the ELEC AC BUS 1 FAULT indication comes into view

 *
 the EIS DMC 1 FAULT is still
 displayed

 *
 DMC 3 FAULT is not displayed any more.

- on the three DUs, the related imagesof each DU stay in view.
 -the ELEC AC BUS 1 FAULT goes out of view.
- on the Upper ECAM DU:
*
 the EIS DMC 1 FAULT indication goes out of view

 *
 the MASTER CAUT light is off.

-there is no change.
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ACTION RESULT -------------------------------------------------------------------------------
- open the circuit breaker 10WT2.

10. On the SWITCHING panel 8VU:
 -set the EIS DMC selector switch to F/O/3.
11. On the rear C/B panel 121VU:
 -close the circuit breaker 10WT2.
12. On the SWITCHING panel 8VU:
 -set the EIS DMC selector switch to NORM.
 Subtask 31-60-00-710-055
-the diagonal line comes into view on the lower ECAM DU and on the F/O PFD and ND.
 - on the upper ECAM DU, the indication comes into view:
 * EIS DMC 2 FAULT - on the glareshield:
 * the MASTER CAUT lights come on.
 -you can hear the single chime.
-the diagonal line goes out of viewand the DUs show their image.
- on the upper ECAM DU:
*
 the EIS DMC 2 FAULT indication goes out of view.

 *
 the MASTER CAUT light is off.

-there is no change.
 E. Automatic Upper DU/Lower DU Transfer
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the center pedestal, on the
 ECAM control panel:
 - set the UPPER DISPLAY  - the upper ECAM DU is stopped.
 potentiometer to OFF.  - the ENGINE/WARNING image goes to the
 lower ECAM DU.
 2. On the center pedestal, on the  - the display units go back to their
 ECAM control panel:  initial configuration.