(2) EPSU UNIT EMER L:
- replace the POWER SUPPLY UNIT-EMERGENCY (11WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(a) 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 (11WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(b) 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 (11WL) pin E to the connector(s) of the related signs and lights, from EPSU (11WL) pin F to the connector(s) of the related signs and lights, from EPSU (11WL) pin G to the connector(s) of the related signs and lights, from EPSU (11WL) pin N to the connector(s) of the related signs and lights, from EPSU (11WL) pin R to the connector(s) of the related signs and lights, from EPSU (11WL) pin T to the connector(s) of the related signs and lights, from EPSU (11WL) pin -B to the connector(s) of the related signs and lights, from EPSU (11WL) 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 (11WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(c) If the fault continues:
- do a check and repair the wiring if necessary (Ref. ASM 33-51/02): from EPSU (11WL) pin -P to DEU-B (300RH4) pin B/17, from EPSU (11WL) pin X to DEU-B (300RH4) pin B/16, 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.
「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 : 001-049, 051-099, 101-105, 151-199, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 203
201-299, May 01/05 CES
(3) EPSU UNIT 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).
(a) 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).
(b) 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, 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 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 -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).
(c) If the fault continues:
- do a check and repair the wiring if necessary (Ref. ASM 33-51/02): from EPSU (12WL) pin -P to DEU-B (300RH4) pin B/20, from EPSU (12WL) pin X to DEU-B (300RH4) pin B/19, from EPSU (12WL) pin L to GND, from EPSU (12WL) pin M to GND, from EPSU (12WL) pin U to GND, from EPSU (12WL) pin -R to GND, from EPSU (12WL) pin -M to GND.
「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 : 001-049, 051-099, 101-105, 151-199, ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 204
201-299, May 01/05 CES
(4) EPSU UNIT AFT L:
- replace the POWER SUPPLY UNIT-EMERGENCY (13WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(a) 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 (13WL) (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(76)
