In the cockpit:
-all annunciator lights come on fully bright.
In the cockpit:
-the applicable annunciator lights go off.
On the overhead panel 25VU:
-
the ON legend in the APU MASTER SW pushbutton switch comes on.

On the ECAM lower display unit:

-
the FUEL page comes into view.

On the FUEL page of the ECAM lower display unit:

-
the APU LP fuel-valve symbol is shown in the open position.

In the APU/AUTO EXTING section of the overhead panel 50VU:

-
the ON light in the APU/AUTO EXTING/TEST pushbutton switch comes on,

-
the OK light in the APU/AUTO EXTING/TEST pushbutton switch comes on after approx. 10 seconds.

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R R R 
R R R 
R R R R 
R R R R R 
R R R R 
R R R R 
R R R R R R 
R R R R R R  7. In the APU/AUTO EXTING section of panel 50VU: - push the RESET pushbutton switch. 
R 

On the APU FIRE panel 20VU:
-
the APU FIRE light in the APU FIRE pushbutton switch comes on.

On the overhead panel 25VU:

-
the FAULT legend in the APU MASTER SW pushbutton switch comes on,

On the glareshield panels 130VU and 131VU:

-
the MASTER CAUT lights come on,

-a single chime is heard.
On the ECAM upper display unit:
-
the warning, APU EMER SHUT DOWN MASTER SW....OFF comes on.

On the FUEL page of the ECAM lower display unit:

-
the APU LP fuel-valve symbol is shown in the closed position.

On the external power control panel 108VU:

-
the APU FIRE light comes on,

-
the ground warning horn is heard.

NOTE : When the ground warning horn is
____ heard, you can switch it off when you open the circuit breaker EIS/HORN/SPLY 2WC. This prevents that the ground warning horn sounds unnecessarily.
In the APU/AUTO EXTING section of the panel 50VU:
-
the ON legend in the TEST pushbutton switch goes off,

-
the OK legend in the TEST pushbutton switch goes off.

On the APU FIRE panel 20VU:
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R  - the APU FIRE light in the APU FIRE 
R  pushbutton switch goes off. 
R  On the external power panel 108VU: 
R  - the APU FIRE light goes off, 
R  - the ground warning horn goes off (if 
R  the circuit breaker 2WC was not 
R  opened). 
R  On the ECAM upper display unit: 
R  - the warning, 
R  APU EMER SHUT DOWN 
R  MASTER SW....OFF 
R  goes off. 
R  On the overhead panel 25VU: 
R  - the FAULT legend in the APU MASTER SW 
R  pushbutton switch goes off. 
R  On the glareshield panels 130VU and 
R  131VU: 
R  - the MASTER CAUT lights go off. 
R  8. On the overhead panel 25VU:  On the overhead panel 25VU: 
R  - release the APU MASTER SW  - the ON legend in the APU MASTER SW 
R  pushbutton switch.  pushbutton switch goes off. 
R  9. On the circuit breaker panel 
R  121VU: 
R  - close the circuit breaker 
R  APU/FUEL/LP VALVE/CTL 1QF, 
R  - open the circuit breaker 
R  APU/FUEL/LP VALVE/SPLY 2QF. 
R  10. On the overhead panel 25VU:  On the overhead panel 25VU: 
R  - push the APU MASTER SW  - the ON legend in the APU MASTER SW 
R  pushbutton switch to the ON  pushbutton switch comes on. 
R  position. 
R  11. On the ECAM control panel:  On the ECAM lower display unit: 
R  - push the FUEL pushbutton.  - the FUEL page comes into view. 
R  On the FUEL page of the ECAM lower 
R  display unit: 

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