W DOC AIRBUS | TSM A320F

Strobe Lights - One of the Anti-Collision Strobe Lights does not flash

TASK 33-48-00-810-802-A
Strobe Lights - One of the Anti-Collision Strobe Lights does not flash

1. Possible Causes
  • LIGHT-STROBE, L WING TIP 17LV
  • PWR SPLY UNIT-L WING TIP STROBE LIGHT 631 or PSU [15LV]
  • PWR SPLY-RELAY 12LV
  • wiring
  • LIGHT-STROBE, R WING TIP 16LV
  • PSU [14LV]
  • STROBE LIGHT [19LV]
  • PSU [18LV]
  • LIGHT ASSY-NAV AND STROBE, REAR [16LA]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 33-41-17-000-801
Removal of the Rear Navigation and Strobe Light Assembly
AMM 33-41-17-400-801
Installation of the Rear Navigation and Strobe Light Assembly
AMM 33-48-00-710-002
Operational Test of the Anti-Collision/Strobe Lighting
ASM 334801
AMM 33-48-13-000-001
Removal of the Tail Cone Strobe-Light
AMM 33-48-13-400-001
Installation of the Tail Cone Strobe-Light
AMM 33-48-14-000-001
Removal of the Strobe Light
AMM 33-48-14-400-001
Installation of the Strobe Light
AMM 33-48-38-000-001
Removal of the Power Supply Unit
AMM 33-48-38-400-001
Installation of the Power Supply Unit
AMM 33-48-39-000-001
Removal of the Power Supply Unit of the Tail Cone Strobe-Light
AMM 33-48-39-400-001
Installation of the Power Supply Unit of the Tail Cone Strobe-Light
3. Fault Confirmation
Subtask 33-48-00-710-051-A
A. Do the operational test of the Anti-Collision/Strobe Lighting and confirm that one of the strobe lights does not flash AMM 33-48-00-710-002.
4. Fault Isolation
Subtask 33-48-00-810-051-A
A. If the test confirms the fault in the LH WING TIP STROBE:
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check of the PWR SPLY-RELAY 12LV and replace it if necessary.
   (3) If the fault continues:
  • do a check and repair the wiring between:
    CB 10LV connector A2 and PWR SPLY-RELAY 12LV connector A/A2,
    CB 10LV connector B2 and PWR SPLY-RELAY 12LV connector A/B2,
    CB 10LV connector C2 and PWR SPLY-RELAY 12LV connector A/C2,

    PWR SPLY-RELAY 12LV connector A/A1 and PWR SPLY UNIT 15LV connector A/1,
    PWR SPLY-RELAY 12LV connector A/B1 and PWR SPLY UNIT 15LV connector A/2,
    PWR SPLY-RELAY 12LV connector A/C1 and PWR SPLY UNIT 15LV connector A/3,
    GND and PWR SPLY UNIT 15LV connector A/12,
    GND and PWR SPLY UNIT 15LV connector A/14,

    PWR SPLY-UNIT 15LV connector B/1 and STROBE LIGHT 17LV connector A/1,
    PWR SPLY-UNIT 15LV connector B/2 and STROBE-LIGHT 17LV connector A/2,
    PWR SPLY-UNIT 15LV connector B/3 and STROBE-LIGHT 17LV connector A/3,
    PWR SPLY-UNIT 15LV connector B/4 and STROBE-LIGHT 17LV connector A/4,
    PWR SPLY-UNIT 15LV connector B/5 and STROBE-LIGHT 17LV connector A/5 ASM 334801.
Subtask 33-48-00-810-054-A
B. If the test confirms the fault in the RH WING TIP STROBE:
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check of the PWR SPLY-RELAY 12LV and replace it if necessary.
   (3) If the fault continues:
  • do a check and repair the wiring between:
    CB 10LV connector A2 and PWR SPLY-RELAY 12LV connector A/A2,
    CB 10LV connector B2 and PWR SPLY-RELAY 12LV connector A/B2,
    CB 10LV connector C2 and PWR SPLY-RELAY 12LV connector A/C2,

    PWR SPLY-RELAY 12LV connector A/A1 and PWR SPLY UNIT 14LV connector A/1,
    PWR SPLY-RELAY 12LV connector A/B1 and PWR SPLY UNIT 14LV connector A/2,
    PWR SPLY-RELAY 12LV connector A/C1 and PWR SPLY UNIT 14LV connector A/3,
    GND and PWR SPLY UNIT 14LV connector A/12,
    GND and PWR SPLY UNIT 14LV connector A/14,

    PWR SPLY UNIT 14LV connector B/1 and STROBE-LIGHT 16LV connector A/1,
    PWR SPLY UNIT 14LV connector B/2 and STROBE-LIGHT 16LV connector A/2,
    PWR SPLY UNIT 14LV connector B/3 and STROBE-LIGHT 16LV connector A/3,
    PWR SPLY UNIT 14LV connector B/4 and STROBE-LIGHT 16LV connector A/4,
    PWR SPLY UNIT 14LV connector B/5 and STROBE-LIGHT 16LV connector A/5 ASM 334801.
Subtask 33-48-00-810-055-A ** ON A/C NOT FOR ALL
C. If the test confirms the fault in the TAIL CONE STROBE:
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check of the PWR SPLY-RELAY 12LV and replace it if necessary.
   (3) If the fault continues:
  • do a check and repair the wiring between:
    CB 10LV connector A2 and PWR SPLY-RELAY 12LV connector A/A2,
    CB 10LV connector B2 and PWR SPLY-RELAY 12LV connector A/B2,
    CB 10LV connector C2 and PWR SPLY-RELAY 12LV connector A/C2,

    PWR SPLY-RELAY 12LV connector A/A1 and PWR SPLY UNIT 18LV connector A/1,
    PWR SPLY-RELAY 12LV connector A/B1 and PWR SPLY UNIT 18LV connector A/2,
    PWR SPLY-RELAY 12LV connector A/C1 and PWR SPLY UNIT 18LV connector A/3,
    GND and PWR SPLY UNIT 18LV connector A/12,
    GND and PWR SPLY UNIT 18LV connector A/14,

    PWR SPLY UNIT 18LV connector B/1 and STROBE-LIGHT 19LV connector A/1,
    PWR SPLY UNIT 18LV connector B/2 and STROBE-LIGHT 19LV connector A/2,
    PWR SPLY UNIT 18LV connector B/3 and STROBE-LIGHT 19LV connector A/3 ASM 334801.
Subtask 33-48-00-810-055-B ** ON A/C NOT FOR ALL
C. If the test confirms the fault in the tail cone strobe:
   (1) If the fault continues:
     (a) If the fault continues:
  • Do a check and repair the wiring between:
    . Pin A/A1 of the power supply relay (12LV) and pin A/1 of the PSU (18LV)
    . Pin A/B1 of the power supply relay (12LV) and pin A/2 of the PSU (18LV)
    . Pin A/C1 of the power supply relay (12LV) and pin A/3 of the PSU (18LV)
    . Pin A/12 of the PSU (18LV) and the ground
    . Pin A/14 of the PSU (18LV) and the ground

    . Pin B/1 of the PSU (18LV) and pin A/1 of the rear navigation and strobe light assembly (16LA)
    . Pin B/2 of the PSU (18LV) and pin A/2 of the rear navigation and strobe light assembly (16LA)
    . Pin B/3 of the PSU (18LV) and pin A/3 of the rear navigation and strobe light assembly (16LA) ASM 334801.
Subtask 33-48-00-710-055-A
D. Do the test as given in the Para. 3.A .
5. Close-up
Subtask 33-48-00-860-051-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:32:02 UTC
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