- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the LT-TAXI (8LR) (Ref. AMM TASK 33-46-12-000-001) and (Ref. AMM TASK 33-46-12-400-001).
1 If the fault continues:
_
- do a check for a short to ground at the wiring between the circuit breaker (1LR) and the taxi light (8LR) pin A/A (Ref. ASM 33-46/01).
a If there is a short to ground:
_
- repair the related wiring. b If there is no short to ground:
_ - replace the circuit breaker (1LR).
B. Do the test given in Para. 3.
TASK 33-46-00-810-802
Failure of the Take off Light
1. Possible Causes
_______________
- LT-TAKE OFF (7LR)
- SW-EXT LT/NOSE (4LR)
- wiring
- RELAY- PWR SPLY, TO LT (5LR)
- C/B-LIGHTING/EXT LT/TAXI AND TAKE OFF/TO (3LR)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 334608
AMM 33-46-00-710-001 Operational Test of the Taxi and Take Off Lights
AMM 33-46-11-000-001 Removal of the Take Off Light (7LR)
AMM 33-46-11-400-001 Installation of the Take Off Light (7LR)
ASM 33-46/01
3. Fault Confirmation
__________________
A. Test Do the operational test of the taxi and take off light (Ref. AMM TASK 33-46-00-710-001).
NOTE : Do this test for the take off light only.
____
4. Fault Isolation
_______________
A. If during the operational test when you set the EXT LT/NOSE switch to TO, the take off light does not operate correctly:
- do a check of the circuit breaker (3LR) status.
(1) If the circuit breaker is closed:
- do a check for 115VAC at the take off power supply relay (5LR) pins A/2 and A/X.
(a) If there is no 115VAC at pin A/X:
- replace the SW-EXT LT/NOSE (4LR) (Ref. IPC 334608).
1 If the fault continues:
_
- do a check of the wiring between the EXT LT/NOSE switch (4LR) pin 3B and the pin A/X of the take off power supply relay (5LR) (Ref. ASM 33-46/01).
「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 ∞∞33-46-00∞∞∞∞∞∞∞∞∞∞Page 204
Feb 01/98 CES a If there is no continuity:
_ - repair the above wiring.
b If there is continuity:
_
- repair the wiring from the EXT LT/NOSE switch (4LR) pin 1B to the first terminal block (Ref. ASM 33-46/01).
(b) If there is no 115VAC at pin A/2:
- replace the RELAY- PWR SPLY, TO LT (5LR) (Ref. IPC 334608).
1 Do a check of the wiring between the take off power supply
_ relay (5LR) pin A/1 and the circuit breaker 3LR (Ref. ASM 33-46/01).
a If there is no continuity:
_ - repair the above wiring.
b If there is continuity:
_
- replace the C/B-LIGHTING/EXT LT/TAXI AND TAKE OFF/TO (3LR)
(c) If there is 115VAC at the two pins:
- replace the LT-TAKE OFF (7LR) (Ref. AMM TASK 33-46-11-000-001) and (Ref. AMM TASK 33-46-11-400-001).
1 If the fault continues:
_
- do a check for a ground signal at pin A/E of the take off light (7LR).
a If there is no ground signal:
_
- repair the wiring between the take off light (7LR) pin A/E and the ground terminal (Ref. ASM 33-46/01).
b If there is a ground signal:
_
- do a check of the wiring between the take off light (7LR) pin A/D and the pin A/2 of the take off light power supply relay (5LR). . If there is no continuity:
- repair the above wiring. . If there is continuity:
- repair the wiring from the take off light power supply relay (5LR) pin A/Z to the first terminal block (Ref. ASM 33-46/01).
(2) If the circuit breaker is open:
- close the circuit breaker.
(a) If the circuit breaker trips:
- replace the LT-TAKE OFF (7LR) (Ref. AMM TASK 33-46-11-000-001) and (Ref. AMM TASK 33-46-11-400-001).
「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 ∞∞33-46-00∞∞∞∞∞∞∞∞∞∞Page 205
Feb 01/98 CES a If there is a short to ground:
1_ If the fault continues:
- do a check for a short to ground at the wiring between the
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