- if you find a short to ground in the wiring, replace the POWER SUPPLY UNIT-EMERGENCY (11WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(3) If the fault continues:
- do a check and repair the wiring if necessary (Ref. ASM 33-51/02): from EPSU (11WL) pin -I to DEU-B (300RH6) pin B/29, from EPSU (11WL) pin -P to DEU-B (300RH6) pin B/31, from EPSU (11WL) pin X to DEU-B (300RH6) pin B/30, from EPSU (11WL) pin L to GND, from EPSU (11WL) pin M to GND, from EPSU (11WL) pin U to GND, from EPSU (11WL) pin -R to GND, from EPSU (11WL) pin -M to GND.
C. Do the test given in para. 3.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
TASK 33-51-00-810-835
Failure of EPSU 12WL
1. Possible Causes
_______________
- POWER SUPPLY UNIT-EMERGENCY (12WL)
- signs and lights
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 33-51-00-710-010 Operational Test of the Emergency Lights via MCDU AMM 33-51-38-000-001 Removal of the Emergency Power-Supply Unit (EPSU) AMM 33-51-38-400-001 Installation of the Emergency Power-Supply Unit
(EPSU)
ASM 33-51/02
ASM 33-51/04
3. Fault Confirmation
__________________
A. Do the operational test of the emergency lights via MCDU (Ref. AMM TASK 33-51-00-710-010).
4. Fault Isolation
_______________
A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
B. If the operational test gives the maintenance message:
EPSU(12WL)EMER R:
- replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(1) If the fault continues:
- check all connected signs and lights for a short-circuit and replace if necessary (Ref. ASM 33-51/02) and (Ref. ASM 33-51/04),
- if you find one or more defective signs and lights, replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(2) If the fault continues:
- do a check for a short to ground and repair the wiring if necessary (Ref. ASM 33-51/02) and (Ref. ASM 33-51/04): from EPSU (12WL) pin E to the connector(s) of the related signs and lights,
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-149, 301-399, 401-499, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page A235
Aug 01/05 CES
from EPSU (12WL) pin F to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin G to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin H to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin J to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin N to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin R to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin T to the connector(s) of the related signs and
lights,
from EPSU (12WL) pin -B to the connector(s) of the related signs
and lights,
from EPSU (12WL) pin -C to the connector(s) of the related signs
and lights,
from EPSU (12WL) pin -H to the connector(s) of the related signs
and lights,
from EPSU (12WL) pin -J to the connector(s) of the related signs
and lights,
- if you find a short to ground in the wiring, replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001). 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(130)
