TASK 33-43-00-810-802
Failure of the Left Runway Turn off Light
1. Possible Causes
_______________
- LT-RUNWAY TURNOFF, L (3LC1)
- wiring
- RELAY-PWR SPLY, RWY TURN OFF LT (6LC)
- C/B-LIGHTING/EXT LT/RWY TURN OFF/L (1LC1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 334308 AMM 33-43-00-710-001 Operational Test of the Runway Turnoff Lights AMM 33-43-11-000-001 Removal of the Runway Turnoff Light (3LC1, 3LC2) AMM 33-43-11-400-001 Installation of the Runway Turnoff Light (3LC1, 3LC2) ASM 33-43/01
3. Fault Confirmation
__________________
A. Test Do the operational test of the runway turn off lights (Ref. AMM TASK 33-43-00-710-001).
4. Fault Isolation
_______________
A. If during the operational test when you set the EXT LT/RWY TURN OFF switch (2LC) to ON, the left turn off light does not operate correctly:
- do a check of the circuit breaker (1LC1) status.
(1) If the circuit breaker is closed:
- do a check of continuity between the circuit breaker (1LC1) and the left runway turn off light (3LC1) pin A/A.
(a) If there is continuity:
- do a check for 115VAC between the pin A/A and A/B of the left runway turn off light (3LC1).
1 If there is 115VAC:
_
- replace the LT-RUNWAY TURNOFF, L (3LC1) (Ref. AMM TASK 33-43-11-000-001) and (Ref. AMM TASK 33-43-11-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-43-00∞∞∞∞∞∞∞∞∞∞Page 203
Feb 01/98 CES 2 If there is no 115VAC:
_
- do a check and repair the wiring from the left runway turn of light (3LC1) pin A/B to the ground terminal (Ref. ASM 33-43/01).
(b) If there is no continuity:
- replace the RELAY-PWR SPLY, RWY TURN OFF LT (6LC) (Ref. IPC 334308).
1 If the fault continues:
_
- do a check for 115VAC at the power supply relay (6LC) pin A/B2.
a If there is 115VAC:
_
- repair the wiring between the power supply relay (6LC) pin A/B1 and the pin A/A of the left runway turn off light (3LC1) (Ref. ASM 33-43/01).
b If there is no 115VAC:
_
- replace the C/B-LIGHTING/EXT LT/RWY TURN OFF/L (1LC1) . If the fault continues:
- repair the wiring between the power supply relay (6LC) pin A/B2 and the circuit breaker (1LC1) (Ref. ASM 33-43/01).
(2) If the circuit breaker is open:
- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the LT-RUNWAY TURNOFF, L (3LC1) (Ref. AMM TASK 33-43-11-000-001) and (Ref. AMM TASK 33-43-11-400-001).
1 If the fault continues:
_
- do a check for a short to ground at the wiring between the left runway turn off light (3LC1) pin A/A and the circuit breaker (1LC1) (Ref. ASM 33-43/01).
a If there is a short to ground:
_ - repair the related wiring.
b If there is no short to ground:
_
- replace the circuit breaker (1LC1).
B. Do the test given in Para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-43-00∞∞∞∞∞∞∞∞∞∞Page 204
Feb 01/98 CES
TASK 33-43-00-810-803
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 -------------------------------------------------------------------------------
IPC 334308
AMM 33-43-00-710-001 Operational Test of the Runway Turnoff Lights
ASM 33-43/01
ASM 33-46/01
3. Fault Confirmation
__________________
A. Test Do the operational test of the runway turn off lights (Ref. AMM TASK 33-43-00-710-001).
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