W DOC AIRBUS | TSM A320F

Refuel/Defuel Floodlight Failure

TASK 28-25-00-810-805-A
Refuel/Defuel Floodlight Failure

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
WARNING: WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT: EN50020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
  • lamp
  • FLOODLIGHT-REFUEL/DEFUEL CTL PNL [32QU]
  • C/B-2QU
  • RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION [14QU]
  • CTL PNL-REFUEL/DEFUEL [800VU]
  • aircraft wiring
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
MULTIMETER - STANDARD
 B. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 24-67-00-810-801-A
Refueling not Possible
TSM TASK 28-25-00-810-817-A
No Power to the REFUEL/DEFUEL PNL
AMM 12-11-28-650-003
Pressure Refuel with Automatic Control
AMM 12-11-28-650-004
Pressure Refuel with Manual Control
ESPM 2053210
ASM 282501
AWM 282501
AWM 282502
AIPC 282554
AMM 28-25-54-000-001
Removal of the Floodlight
AMM 28-25-54-400-001
Installation of the Floodlight
AMM 28-25-55-000-001
Removal of the Refuel Panel
AMM 28-25-55-400-001
Installation of the Refuel Panel
3. Fault Confirmation
Subtask 28-25-00-865-056-A
A. Table of the circuit breakers referred to in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUFUEL/RFL/DFL/SPLY2QUL24
122VUELEC/REFLNG/NORM2PRS27
122VUELEC/RFL/SPLY/LOGIC4PRU29
122VUELEC/REFLNG/ON/BAT1PRU28
Subtask 28-25-00-710-054-A
B. Test
   (1) Make sure that the C/Bs that follow are closed:
  • C/B-1PR
  • C/B-2PR
  • C/B-4PR
  • C/B-2QU.
   (2) Do the Job Set-up subtask of the refuel procedure AMM 12-11-28-650-003, or AMM 12-11-28-650-004.
     (a) During the Test of the Refuel Panel 800VU make a record of the results.
     (b) When you open the access panel 192MB/522KB/622KB, or if you put the BATT POWER switch to the ON position (because ground power is not available), look at the floodlight lamp:

  • if the refuel floodlight and refuel panel 800VU do not power-up, do the procedures No Power to the REFUEL/DEFUEL PNL (800VU) (Ref. TSM TASK 28-25-00-810-817) and Refueling not Possible (Ref. TSM TASK 24-67-00-810-801)

  • if the refuel floodlight does not come on but on the refuel panel all the other lights and LEDs are serviceable, do Para. 4.A.

  • if the refuel floodlight is serviceable but on the refuel panel a light or FQI indicator does not operate as specified, go to the applicable section (Local or Observations) and do the applicable troubleshooting procedure.
4. Fault Isolation
Subtask 28-25-00-810-054-A
A. Procedure
   (1) Make sure that the C/B-2QU is closed.
   (2) Get access to the rear of the lamp AMM 28-25-54-000-001.
   (3) Do a test with a MULTIMETER - STANDARD to see if 28VDC is available at the lamp AWM 282502:

  • if 28VDC is available at the lamp, go to step (4)

  • if 28VDC is not available at the lamp, go to step (5).
   (4) Replace, as necessary, the items that follow:
     (a) The lamp AIPC 282554 FIG 01, ITEM 040.
     (b) The FLOODLIGHT-REFUEL/DEFUEL CTL PNL [32QU] AMM 28-25-54-000-001 and AMM 28-25-54-400-001.
   (5) If 28VDC is not available across the lamp:
     (a) Do a check ASM 282501 of and, if necessary, replace the items that follow:
       1 The C/B-2QU.
         a Use a multimeter to make sure that there is 28VDC between C/B-2QU, terminal 2 and an adjacent ground point AWM 282501.
       2 The RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION [14QU] .
       3 The CTL PNL-REFUEL/DEFUEL [800VU] AMM 28-25-55-000-001 and AMM 28-25-55-400-001.
         a At the CTL PNL-REFUEL/DEFUEL (800VU) use a multimeter to make sure that there is continuity between:
  • the receptacle 4023VC, pin Y and receptacle 4024VC, pin L
  • the receptacle 4023VC, pin <H and receptacle 4024VC, pin <F.
NOTE: There is a diode connected between the receptacle 4023VC, pin <H (anode) and receptacle 4024VC, pin <F (cathode) AWM 282501.
     (b) Do the test given in Para. 3.B.
     (c) If the fault continues, do a check ASM 282501 of the aircraft wiring between:
  • the floodlight negative terminal and the ground point
  • the floodlight positive terminal and the refuel panel 800VU connector 4024VC-A, pin L
  • the refuel panel 800VU connector 4023VC-A, pin Y and the relay-14QU, terminal A1
  • the relay-14QU, terminal A2 and the C/B-2QU
  • the C/B-2QU and relay-14QU, terminal X1
  • the relay-14QU, terminal X2 and the refuel panel 800VU connector 4023VC-A, pin <H
  • the refuel panel 800VU connector 4024VC-A, pin <F and the refuel door panel MSW (20QU), terminal A
  • the refuel door panel MSW (20QU), terminal c and the ground point.
     (d) Repair all the unserviceable wiring and connectors ESPM 2053210.
     (e) Do the test given in Para. 3.B.
[Rev.8 from Aug 2018] 2026.04.04 04:28:43 UTC
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