W DOC AIRBUS | AMM A320F

Operational Test of the Instrument and Panel Integral-Lighting

TASK 33-13-00-710-001-A
Operational Test of the Instrument and Panel Integral-Lighting

1. Reason for the Job
To make sure that the instrument and panel integral-lighting operates correctly.
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
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)
3. Job Set-up
Subtask 33-13-00-860-051-A
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Pull the STANDBY COMPASS out.
Subtask 33-13-00-865-050-A
B. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VULIGHTING/STBY/COMP/LIGHT1LFH04
** ON A/C NOT FOR ALL
49VULIGHTING/STBY/COMP/LIGHT1LFH02
** ON A/C ALL
122VULIGHTING/INSTL LT/GLARE/SHLD5LFY05
122VULIGHTING/INSTL LT/MAIN INST/PNL AND/PED4LFY04
122VULIGHTING/INSTL LT/OVHD/PNL3LFY03
4. Procedure
Subtask 33-13-00-710-050-C ** ON A/C NOT FOR ALL
A. Operational Test of the Instrument and Panel Integral Lighting
ACTION
RESULT
1.On the INT LT section of the overhead control and indicating panel 25VU:
  • Set the ICE IND & STBY COMPASS selector switch to the on position.
In zone 210:
  • The integral lighting of the standby compass comes on with maximum intensity.
  • Set the selector switch to OFF.
  • The integral lighting of the standby compass goes off.
2.On the FLOOD LT/INTEG LT panel 111VU:
  • Turn the INTEG LT/MAIN PNL & PED potentiometer from OFF to BRT.
On the main instrument panels (Captain and F/O), the center instrument panel, the center pedestal and the side consoles:
  • The instrument and panel integral lighting becomes brighter.
  • Turn the potentiometer from BRT to OFF.
  • The instrument and panel integral lighting becomes dimmer.
3.On the INT LT section of the overhead control and indicating panel 25VU:
  • Turn the OVHD INTEG LT potentiometer from OFF to BRT.
On the overhead panel:
  • The integral lighting becomes brighter.
  • Turn the potentiometer from BRT to OFF.
  • The integral lighting becomes dimmer.
4.Under the glareshield 13VU, on the center main-instrument-panel light:
  • Turn the FLOOD LT and INT LT potentiometers.
On the glareshield and the FCU:
  • The integral lighting becomes brighter.
  • Turn the potentiometers to their initial position.
  • The integral lighting becomes dimmer.
Subtask 33-13-00-710-050-D ** ON A/C NOT FOR ALL
A. Operational Test of the Instrument and Panel Integral-Lighting
ACTION
RESULT
1.On the panel 25VU:
  • Set the ICE IND & STBY COMPASS selector switch to ON.
In zone 210:
  • The integral lighting of the standby compass comes on with maximum intensity.
  • Set the selector switch to the off position.
  • The integral lighting of the standby compass goes off.
2.On the panel 111VU:
  • Turn the INTEG LT/MAIN PNL & PED potentiometer from OFF to BRT.
On the main instrument panels (Captain and F/O), the center instrument panel, the center pedestal and the side consoles:
  • The instrument and panel integral-lighting becomes brighter when you turn the potentiometer to BRT.
  • Turn the potentiometer from BRT to OFF.
  • The instrument and panel integral-lighting becomes dimmer.
3.On the panel 25VU:
  • Turn the OVHD INTEG LT potentiometer from OFF to BRT.
On the overhead panel:
  • The integral lighting becomes brighter when you turn the potentiometer to BRT.
  • Turn the potentiometer from BRT to OFF.
  • The integral lighting becomes dimmer.
4.Under the glareshield 13VU, on the center main-instrument-panel light:
  • Turn the FLOOD LT and INT LT potentiometers.
On the glareshield and the FCU:
  • The integral lighting becomes brighter when you turn the potentiometers.
  • Turn the potentiometers to their initial position.
  • The integral lighting becomes dimmer.
5. Close-up
Subtask 33-13-00-860-050-A
A. Put the aircraft back to its initial configuration.
   (1) Push the STANDBY COMPASS back to its initial position.
   (2) Put the system back to the serviceable condition.
   (3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 05:00:38 UTC
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