W DOC AIRBUS | AMM A320F

Operational Test of the Automatic Function of the Cabin Signs in Case of Excessive Altitude

TASK 23-73-00-710-804-A
Operational Test of the Automatic Function of the Cabin Signs in Case of Excessive Altitude

ZONE: 200
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
200
UPPER HALF FUSELAGE
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 23-73-00-860-003-A
Cabin Zones Programming
TASK 23-73-00-861-001-A
Energize the Cabin Intercommunication Data System (CIDS)
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
3. Job Set-up
Subtask 23-73-00-860-220-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Make sure that the Cabin Intercommunication Data System (CIDS) is energized (Ref. AMM TASK 23-73-00-861-001).
   (3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
   (4) On the ECAM control panel push the PRESS pushbutton switch, the CAB PRESS page comes into view on the lower ECAM display unit.
   (5) On AIR COND panel 30VU, make sure that:
  • The PACK 1 and the PACK 2 pushbutton switches are in the OFF position (the OFF legends are on).
  • The RAM AIR pushbutton switch is in the OFF position (the ON legend is off).
   (6) On CABIN PRESS panel 25VU, make sure that:
  • The MODE SEL pushbutton switch is in the AUTO position (the FAULT and MAN legends are off).
  • The LDG ELEV selector is in the AUTO position.
  • The DITCHING pushbutton switch is in the AUTO position (the ON legend is off).
   (7) Make sure that NO SMOKING switch 190RH (if applicable) and SEAT BELT switch 191RH on cockpit overhead panel 25VU are in the OFF position.
   (8) Make sure that the A/C is not in a NON SMOKER configuration and a NO SMOKING area is not programmed, if applicable (Ref. AMM TASK 23-73-00-860-003).
NOTE: The Non Smoker Section (NSS) signs come on together with the No Smoking (NS) signs.
   (9) Make sure that there are no persons near the Outflow Valve (OFV) before you start this test.
Subtask 23-73-00-865-268-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUL/G/LGCIU/SYS1/NORM1GAC09
49VUAIR COND/CAB/PRESS/CTL11HLD09
49VUFWS/FWC1/SPLY3WWF01
121VUHYDRAULIC/LGCIU/SYS22GAQ35
121VUEIS/FWC2/SPLY2WWQ07
122VUAIR COND/CAB PRESS/CTL/MAN3HLY23
122VUAIR COND/CAB PRESS/CTL/22HLY22
Subtask 23-73-00-865-269-A ** ON A/C NOT FOR ALL
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR33
121VULGCIU/BAT SPLY/SYS158GAR32
** ON A/C NOT FOR ALL
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR32
121VULGCIU/BAT SPLY/SYS158GAR31
** ON A/C NOT FOR ALL
122VURPCU4HLX23
4. Procedure
Subtask 23-73-00-710-357-A ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
A. Do the Test of the Automatic Function of the Cabin Signs in Case of Excessive Cabin Altitude
NOTE: The No Mobile signs in the cabin stay permanently on.
ACTION
RESULT
1.On CABIN PRESS panel 25VU:
  • Set the LDG ELEV selector to about 11300 ft.
On the ECAM upper display unit:
  • The green MAN LDG ELEV memo message comes on.

On the ECAM lower display unit:
  • The green AUTO xxx FT indication changes to the green MAN xxx FT indication.
NOTE: The actual manual altitude indication depends on the LDG ELEV selector position.
2.On CABIN PRESS panel 25VU:
  • Push and release the MODE SEL pushbutton switch.
On CABIN PRESS panel 25VU:
  • The white MAN pushbutton switch light comes on.
NOTE: The accuracy of the cabin altitude indication in MAN mode is +/- 1100 ft.

On the ECAM lower display unit:
  • The white LDG ELEV indication and the green MAN xxx FT indication goes off.
  • The green SYS 1 (or SYS 2) indication changes to the green MAN indication.

In the cabin:
  • The Fasten Seat Belt (FSB) signs flash for a predefined time with a predefined frequency and then stay on or only stay on.
NOTE: The FSB signs operation is related to the Cabin Assignment Module (CAM) configuration.
  • The No Smoking (NS) signs (if installed) flash for a predefined time with a predefined frequency and then stay on or only stay on.
NOTE: The NS signs operation is related to the CAM configuration.
In the cabin and in the lavatories:
  • You hear emergency announcement from all loudspeakers.
NOTE: You can hear the emergency announcement only if it is recorded on the Prerecorded Announcement and Boarding Music (PRAM).
  • You hear a LO chime.
NOTE: You can hear a LO chime only if no emergency announcement is recorded on PRAM.
In the lavatories:
  • The Return To Seat (RTS) signs stay off.
At all entry areas:
  • The EXIT signs come on.
In the cockpit, on the ECAM upper display unit:
  • The message "NO SMOKING" comes into view.
NOTE: The ECAM message "NO SMOKING" comes into view only if NS signs are installed.
  • The message "SEAT BELTS" comes into view.
3.On CABIN PRESS panel 25VU:
  • Push the MODE SEL pushbutton switch.
On CABIN PRESS panel 25VU:
  • The white MAN pushbutton switch light goes off.

On the ECAM lower display unit:
  • The white LDG ELEV indication and the green MAN xxx FT indication comes on.
  • The green MAN indication changes to the green SYS 1 (or SYS 2) indication.
4.On CABIN PRESS panel 25VU:
  • Set the LDG ELEV selector to the AUTO position.
On the ECAM upper display unit:
  • The green MAN LDG ELEV memo message goes off.

On the ECAM lower display unit:
  • The green MAN xxx FT indication changes to the green AUTO xxx FT indication.

In the cabin:
  • The FSB signs go off.
  • The NS signs (if installed) go off.
In the lavatories:
  • The RTS signs stay off.
At all entry areas:
  • The EXIT signs go off.
In the cockpit, on the ECAM upper display unit:
  • The message "NO SMOKING" goes out of view.
NOTE: The ECAM message "NO SMOKING" goes out of view only if NS signs are installed.
  • The message "SEAT BELTS" goes out of view.
Subtask 23-73-00-710-357-B ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
A. Do the Test of the Automatic Function of the Cabin Signs in Case of Excessive Cabin Altitude
NOTE: The No Mobile signs in the cabin stay permanently on.
ACTION
RESULT
1.On CABIN PRESS panel 25VU:
  • Set the LDG ELEV selector to about 11300 ft.
On the ECAM upper display unit:
  • The green MAN LDG ELEV memo message comes on.

On the ECAM lower display unit:
  • The green AUTO xxx FT indication changes to the green MAN xxx FT indication.
NOTE: The actual manual altitude indication depends on the LDG ELEV selector position.
2.On CABIN PRESS panel 25VU:
  • Push and release the MODE SEL pushbutton switch.
On CABIN PRESS panel 25VU:
  • The white MAN pushbutton switch light comes on.
NOTE: The accuracy of the cabin altitude indication in MAN mode is +/- 1100 ft.

On the ECAM lower display unit:
  • The white LDG ELEV indication and the green MAN xxx FT indication goes off.
  • The green SYS 1 (or SYS 2) indication changes to the green MAN indication.

In the cabin:
  • The Fasten Seat Belt (FSB) signs flash for a predefined time with a predefined frequency and then stay on or only stay on.
NOTE: The FSB signs operation is related to the Cabin Assignment Module (CAM) configuration.
  • The No Smoking (NS) signs flash for a predefined time with a predefined frequency and then stay on or only stay on.
NOTE: The NS signs operation is related to the CAM configuration.
In the cabin and in the lavatories:
  • You hear a LO chime.
In the lavatories:
  • The Return To Seat (RTS) signs stay off.
At all entry areas:
  • The EXIT signs come on.
In the cockpit, on the ECAM upper display unit:
  • The message "NO SMOKING" comes into view.
  • The message "SEAT BELTS" comes into view.
3.On CABIN PRESS panel 25VU:
  • Push the MODE SEL pushbutton switch.
On CABIN PRESS panel 25VU:
  • The white MAN pushbutton switch light goes off.

On the ECAM lower display unit:
  • The white LDG ELEV indication and the green MAN xxx FT indication comes on.
  • The green MAN indication changes to the green SYS 1 (or SYS 2) indication.
4.On CABIN PRESS panel 25VU:
  • Set the LDG ELEV selector to the AUTO position.
On the ECAM upper display unit:
  • The green MAN LDG ELEV memo message goes off.

On the ECAM lower display unit:
  • The green MAN xxx FT indication changes to the green AUTO xxx FT indication.

In the cabin:
  • The FSB signs go off.
  • The NS signs go off.
In the lavatories:
  • The RTS signs stay off.
At all entry areas:
  • The EXIT signs go off.
In the cockpit, on the upper ECAM display:
  • The message "NO SMOKING" goes out of view.
  • The message "SEAT BELTS" goes out of view.
5. Close-up
Subtask 23-73-00-865-270-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR33
121VULGCIU/BAT SPLY/SYS158GAR32
** ON A/C NOT FOR ALL
121VUHYDRAULIC/LGCIU/SYS1/GRND SPLY52GAQ34
** ON A/C NOT FOR ALL
121VULGCIU/BAT SPLY/SYS259GAR32
121VULGCIU/BAT SPLY/SYS158GAR31
** ON A/C NOT FOR ALL
122VURPCU4HLX23
Subtask 23-73-00-860-221-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
   (2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:12:28 UTC
"WTRUIB" 2025