**ON A/C ALL
TASK 23-73-00-810-929
PAX CALL LAMP at LAV X Fault
1. Possible Causes
_______________
- PAX CALL LAMP / LAVATORY CALL LIGHT
- wiring
- DEU-A (200RHxx)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific 1 MULTIMETER - STANDARD
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-73-00-710-033 Pax Call Lamps Test from the MCDU AMM 23-73-00-710-035 Operational Test of the Cabin LED Lamps via MCDU AMM 23-73-00-740-010 Interface and Power-Up Test of the Cabin
Intercommunication Data System (CIDS) via the CFDS AMM 23-73-14-000-001 Removal of the Lavatory Call Light AMM 23-73-14-400-001 Installation of the Lavatory Call Light AMM 23-73-46-000-001 Removal of the Decoder/Encoder Unit (DEU) A 200RH AMM 23-73-46-400-001 Installation of the Decoder/Encoder Unit (DEU) A
200RH ASM 23-73/07 ASM 23-73/18 ASM 23-73/19
「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 ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page B282
Aug 01/05R
CES
3. Fault Confirmation
__________________
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
A. Test for the Pax Call Lamps / Lavatory Call Lights
(1) Do the CIDS1/SIGN LAMP test through the CFDS (Ref. AMM TASK 23-73-00-710-033).
NOTE : An erroneous class 3 fault message will be recorded for each
____ LED PAX CALL LAMP (without bulbs), if the test of the related lamps is not deactivated in the CAM.
(2) Push the Call Button in the related lavatory to make sure that the related Pax Call Lamp / Lavatory Call Light comes on.
R **ON A/C 106-149, 301-399, 401-499,
A. Test
(1) Do the CIDS Interface and Power-Up Test via the CFDS (Ref. AMM TASK 23-73-00-740-010).
(2) Do the Operational Test of the Cabin LED Lamps via the CFDS (Ref. AMM TASK 23-73-00-710-035).
**ON A/C ALL
4. Fault Isolation
_______________
A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
B. If the CIDS1/SIGN LAMP test gives the maintenance message PAX CALL LAMP LAV X and the lamp does not come on:
NOTE : X identifies the location of the affected lavatory.
____
- replace the related PAX CALL LAMP / LAVATORY CALL LIGHT (Ref. AMM TASK 23-73-14-000-001) and (Ref. AMM TASK 23-73-14-400-001).
(1) If the fault continues:
- do a check for 28 VDC with a MULTIMETER - STANDARD at the related DEU-A between the related pairs of connectors given below: Connectors C/7 and C/18 or Connectors C/9 and C/19 or
「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 ∞∞23-73-00∞∞∞∞∞∞∞∞∞∞Page B283
Aug 01/05 CES
Connectors C/11 and C/20 (Ref. ASM 23-73/07), (Ref. ASM 23-73/18) and (Ref. ASM 23-73/19).
(a) If there is approx. 28 VDC:
- do a check and repair the wiring if necessary between the: Pins 1 and 2 of the related Pax Call Lamp / Lavatory Call Light and the related DEU-A pairs of connectors given below: Connectors C/7 and C/18 or Connectors C/9 and C/19 or Connectors C/11 and C/20 (Ref. ASM 23-73/07), (Ref. ASM 23-73/18) and (Ref. ASM 23-73/19).
(b) If there is no 28 VDC:
- replace the related DEU-A (200RHxx) (Ref. AMM TASK 23-73-46-000-001) and (Ref. AMM TASK 23-73-46-400-001).
R **ON A/C 106-149, 301-399, 401-499,
B. If the test confirms the fault:
- replace the related PAX CALL LAMP / LAVATORY CALL LIGHT (Ref. AMM TASK 23-73-14-000-001) and (Ref. AMM TASK 23-73-14-400-001).
(1) If the fault continues:
- do a check for 28 VDC with a MULTIMETER - STANDARD at the related DEU-A connector at the signal names: Call L.1 OUT and DC GND (Ref. ASM 23-73/07), (Ref. ASM 23-73/18) and (Ref. ASM 23-73/19).
(a) If there is approx. 28 VDC:
- do a check and repair the wiring if necessary between the: DEU-A (200RHxx) and the related Pax Call Lamp / Lavatory Call Light with the signal names: CALL L.1 OUT and DC GND. (Ref. ASM 23-73/07), (Ref. ASM 23-73/18) and (Ref. ASM 23-73/19). 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 COMMUNICATIONS 通讯2(142)
