- replace the RELAY-PWR SPLY, RWY TURN OFF LT (6LC) (Ref. IPC 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) (Ref. ASM 33-43/01).
(2) If there is no 28VDC:
- replace the SW-EXT LT/RWY TURN OFF (2LC) (Ref. IPC 334308).
(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 (Ref. ASM 33-43/01) and (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 ∞∞33-43-00∞∞∞∞∞∞∞∞∞∞Page 205
Feb 01/98 CES
B. Do the test given in Para. 3.
TAXI AND TAKE OFF LIGHTS - FAULT ISOLATION PROCEDURES
_____________________________________________________
TASK 33-46-00-810-801
Failure of the Taxi Light
1. Possible Causes
_______________
- LT-TAXI (8LR)
- SW-EXT LT/NOSE (4LR)
- wiring
- RELAY-PWR SPLY, TAXI LT (6LR)
- C/B-LIGHTING/EXT LT/TAXI AND TAKE OFF/TAXI (1LR)
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 33-46-12-000-001 Removal of the Taxi Light (8LR) AMM 33-46-12-400-001 Installation of the Taxi Light (8LR) 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 taxi light only.
____
4. Fault Isolation
_______________
A. If during the operational test when you set the EXT LT/NOSE switch to TAXI, the taxi light does not operate correctly:
- do a check of the circuit breaker (1LR) status.
(1) If the circuit breaker is closed:
- do a check for 115VAC at the taxi power supply relay (6LR) 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 2A and the pin A/X of the taxi light power supply relay (6LR) (Ref. ASM 33-46/01).
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 1A 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, TAXI LT (6LR) (Ref. IPC 334608).
1 Do a check of the wiring between the take off light power
_ supply relay (5LR) pin A/1 and the circuit breaker (1LR) (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/TAXI (1LR).
(c) If there is 115VAC at the two pins:
- 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 ground signal at pin A/B of the taxi light (8LR).
a If there is no ground signal:
_
- repair the wiring between the taxi light (8LR) pin A/B and the ground terminal (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 202
Feb 01/98 CES (2) If the circuit breaker is open:
b_ If there is a ground signal:
- do a check of the wiring between the taxi light (8LR) pin
A/A and the pin A/2 of the taxi light power supply relay
(6LR):
. if there is no continuity:
- repair the above wiring
. if there is continuity:
- repair the wiring from the taxi light power supply
中國航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 LIGHTS 燈光(64)
