NAVIGATION LIGHTS - FAULT ISOLATION PROCEDURES
______________________________________________
TASK 33-41-00-810-801
Navigation Lights - Fault in the Navigation Lights
1. Possible Causes
_______________
- LT-NAVIGATION, TAIL (15LA)
- XFMR-TAIL NAVIGATION LIGHT (13LA)
- LT-NAVIGATION, L WING TIP (9LA)
- LT-NAVIGATION, R WING TIP (10LA)
- lamp
- wiring
- RELAY (6LA)
- RELAY (7LA)
- SWITCH (3LA)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 33-41-00-710-001 Operational Test of the Navigation Lights AMM 33-41-11-000-001 Removal of the Wingtip Navigation Light 9LA(10LA). AMM 33-41-11-400-001 Installation of the Wingtip Navigation Light
9LA(10LA). AMM 33-41-15-000-001 Removal of the Tail Navigation Light 15LA AMM 33-41-15-400-001 Installation of the Tail Navigation Light 15LA AMM 33-41-16-000-001 Removal of the Tail Navigation-Light Transformer 13LA AMM 33-41-16-400-001 Installation of the Tail Navigation-Light Transformer
13LA ASM 33-41/01
3. Fault Confirmation
__________________
A. Do the operational test of the navigation lights (Ref. AMM TASK 33-41-00-710-001).
4. Fault Isolation
_______________
A. With the toggle switch NAV & LOGO 3LA in position 1.
(1) If the LT-NAVIGATION, TAIL (15LA) does not come on, but one or more navigation lights come on:
- replace the related lamp.
(a) If the fault continues:
- do a check of the LT-NAVIGATION, TAIL (15LA) and replace it if necessary (Ref. AMM TASK 33-41-15-000-001) and (Ref. AMM TASK 33-41-15-400-001).
(b) If the fault continues:
- do a check of the XFMR-TAIL NAVIGATION LIGHT (13LA) and replace it if necessary (Ref. AMM TASK 33-41-16-000-001) and (Ref. AMM TASK 33-41-16-400-001).
(c) If the fault continues:
- do a check and repair the wiring between: LT-NAVIGATION, TAIL (15LA) connector A/1 and XFMR-TAIL NAVIGATION LIGHT (13LA) connector A/1, XFMR-TAIL NAVIGATION LIGHT (13LA) connector A/1 and RELAY (6LA) connector A/1, LT-NAVIGATION, TAIL (15LA) connector A/2 and XFMR-TAIL NAVIGATION LIGHT (13LA) connector A/2, XFMR-TAIL NAVIGATION LIGHT (13LA) connector A/2 and GND (Ref. ASM 33-41/01).
(2) If the LT-NAVIGATION, L WING TIP (9LA) does not come on, but one or more navigation lights come on:
- replace the related lamp.
(a) If the fault continues:
- do a check of the LT-NAVIGATION, L WING TIP (9LA) and replace it if necessary (Ref. AMM TASK 33-41-11-000-001) and (Ref. AMM TASK 33-41-11-400-001).
(b) If the fault continues:
- do a check and repair the wiring between: LT-NAVIGATION, L WING TIP (9LA) connector A/A and RELAY (6LA) connector A/1 LT-NAVIGATION, L WING TIP (9LA) connector A/B and GND (Ref. ASM 33-41/01).
(3) If the LT-NAVIGATION, R WING TIP (10LA) does not come on, but one or more navigation lights come on:
- replace the related lamp.
(a) If the fault continues:
- do a check of the LT-NAVIGATION, R WING TIP (10LA) and replace it if necessary (Ref. AMM TASK 33-41-11-000-001) and (Ref. AMM TASK 33-41-11-400-001).
(b) If the fault continues:
- do a check and repair the wiring between: LT-NAVIGATION, R WING TIP (10LA) connector A/A and RELAY (6LA) connector B/1, LT-NAVIGATION, R WING TIP (10LA) connector A/B and GND (Ref. ASM 33-41/01).
(4) If no navigation lights come on:
- do a check of the RELAY 6LA and replace it if necessary.
(a) If the fault continues:
- do a check of the SWITCH 3LA and replace it if necessary.
(b) If the fault continues:
- do a check and repair the wiring between: RELAY (6LA) connector A/2 and CB 1LA, RELAY (6LA) connector B/2 and CB 1LA, RELAY (6LA) connector X/1 and CB 1LA, RELAY (6LA) connector X/2 and GND (Ref. ASM 33-41/01).
B. With the toggle switch NAV & LOGO 3LA in position 2.
(1) If the LT-NAVIGATION, TAIL (15LA) does not come on, but one or more navigation lights come on:
- replace the related lamp.
(a) If the fault continues:
- do a check of the LT-NAVIGATION, TAIL (15LA) and replace it if necessary (Ref. AMM TASK 33-41-15-000-001) and (Ref. AMM TASK 33-41-15-400-001). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 LIGHTS 灯光(59)
