W DOC AIRBUS | TSM A320F

Failure of Both Runway Turn off Lights

TASK 33-43-00-810-803-A
Failure of Both Runway Turn off Lights

1. Possible Causes
  • RELAY-PWR SPLY, RWY TURN OFF LT (6LC)
  • wiring
  • SW-EXT LT/RWY TURN OFF (2LC)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 33-43-00-710-001
Operational Test of the Runway Turnoff Lights
ASM 334301
AIPC 334308
ASM 334601
3. Fault Confirmation
Subtask 33-43-00-710-054-A
A. Test
Do the operational test of the runway turn off lights AMM 33-43-00-710-001.
4. Fault Isolation
Subtask 33-43-00-810-052-A
A. If, during the operational test, when you set the EXT LT/RWY TURN OFF switch (2LC) to ON, the two turn off lights do not operate correctly:
  • do a check for 28VDC at the EXT LT/RWY TURN OFF switch (2LC) pin 2A.
   (1) If there is 28VDC:
  • replace the RELAY-PWR SPLY, RWY TURN OFF LT (6LC) AIPC 334308.
     (a) If the fault continues:
  • do a check and repair the wiring between the EXT LT/RWY TURN OFF switch (2LC) pin 2A and the pin A/X1 of the power supply relay (6LC) ASM 334301.
   (2) If there is no 28VDC:
     (a) If the fault continues:
  • do a check and repair the wiring from the EXT LT/RWY TURN OFF switch (2LC) pin 1A and the first terminal block ASM 334301 and ASM 334601.
Subtask 33-43-00-710-055-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:31:59 UTC
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