- replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(3) If one or more lamps of the SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHTS or EXIT MARKERS related to the POWER SUPPLY UNIT-EMERGENCY (12WL) do not come on:
- replace the lamp(s).
(a) If the fault continues:
- do a check for approx. 6 VDC at the related SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHT or EXIT MARKER (Ref. ASM 33-51/04).
1 If there are approx. 6 VDC:
_
- replace the related SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHT (Ref. AMM TASK 33-51-18-000-001) and (Ref. AMM TASK 33-51-18-400-001) or EXIT MARKER
「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 235
201-299, May 01/05 CES
(Ref. AMM TASK 33-51-13-000-001) and (Ref. AMM TASK 33-51-
13-400-001).
2_ If there are no 6 VDC:
- do a check and repair the wiring between the:
POWER SUPPLY UNIT-EMERGENCY (12WL) connector A/<B or <J and
the related SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHT
or EXIT MARKER,
related SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHT or
EXIT MARKER and GND (Ref. ASM 33-51/04).
(4) If all SEAT/WALL-MOUNTED EMERGENCY-EXIT-LOCATION LIGHTS and EXIT MARKERS related to the POWER SUPPLY UNIT-EMERGENCY (12WL) do not come on:
- replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
(5) If one or more lamps of the SIGNS-EXIT LOCATION or SIGNS-EXIT MARKING or ESCAPE HATCH-HANDLE LIGHTS related to the POWER SUPPLY UNIT-EMERGENCY (12WL) do not come on:
- replace the lamp(s).
(a) If the fault continues:
- do a check for approx. 6 VDC at the related SIGN-EXIT LOCATION or SIGN-EXIT MARKING or ESCAPE HATCH-HANDLE LIGHT (Ref. ASM 33-51/02).
1 If there are approx. 6 VDC:
_
- replace the related SIGN-EXIT LOCATION (Ref. AMM TASK 33-51-17-000-001) and (Ref. AMM TASK 33-51-17-400-001) or SIGN-EXIT MARKING (Ref. AMM TASK 33-51-16-000-001) and (Ref. AMM TASK 33-51-16-400-001) or ESCAPE HATCH-HANDLE LIGHT (Ref. AMM TASK 33-51-11-000-001) and (Ref. AMM TASK 33-51-11-400-001).
2 If there are no 6 VDC:
_
- do a check and repair the wiring between the: POWER SUPPLY UNIT-EMERGENCY (12WL) connector A/N or R and the related SIGN-EXIT LOCATION or SIGN-EXIT MARKING or ESCAPE HATCH-HANDLE LIGHT, related SIGN-EXIT LOCATION or SIGN-EXIT MARKING or ESCAPE HATCH-HANDLE LIGHT and GND (Ref. ASM 33-51/02).
(6) If all SIGNS-EXIT LOCATION and SIGNS-EXIT MARKING and ESCAPE HATCH-HANDLE LIGHTS related to the POWER SUPPLY UNIT-EMERGENCY (12WL) do not come on:
- 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:
- do a check and repair the wiring between the: POWER SUPPLY UNIT-EMERGENCY (12WL) connector A/<F and the Relay (8WL) connector A/2 (Ref. ASM 33-51/01) and (Ref. ASM 33-51/02).
(7) If all lights, signs and markers related to the POWER SUPPLY UNIT-EMERGENCY (12WL) do not come on:
- replace the POWER SUPPLY UNIT-EMERGENCY (12WL) (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001).
R **ON A/C 303-399,
R E. If the test gives the maintenance message EPSU INT LOAD MID L, do the R operational test of the emergency cabin lights and signs (Ref. AMM TASK R 33-51-00-710-004).
R NOTE : The time taken to do this test must not be more than 1 minute to
____ R prevent discharge of the emergency lighting batteries.
R (1) If one or more lamps of the LIGHTS-EMERGENCY, CABIN related to the
R POWER SUPPLY UNIT-EMERGENCY (15WL) do not come on:
R - replace the lamp(s).
R (a) If the fault continues:
R - do a check for approx. 6 VDC at the related LIGHT-EMERGENCY,
R CABIN (Ref. ASM 33-51/02).
R 1_ If there are approx. 6 VDC:
R - replace the related LIGHT-EMERGENCY, CABIN (Ref. AMM TASK
R 33-51-11-000-001) and (Ref. AMM TASK 33-51-11-400-001).
R 2_ If there are no 6 VDC:
R - do a check and repair the wiring between the:
R POWER SUPPLY UNIT-EMERGENCY (15WL) connector A/E or G and
R the related LIGHT-EMERGENCY, CABIN,
R related LIGHT-EMERGENCY, CABIN and GND (Ref. ASM 33-51/02).
R (2) If all LIGHTS-EMERGENCY, CABIN related to the POWER SUPPLY 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(91)
