W DOC AIRBUS | TSM A320F

Cabin Lights - One Cabin Light does not come on

TASK 33-21-00-810-801-A
Cabin Lights - One Cabin Light does not come on

1. Possible Causes
  • FLUORESCENT TUBE
  • BALLAST UNIT
  • WIRING
  • DEU-A
  • CLEDU
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 23-73-00-740-005
BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
AMM 23-73-46-000-001
Removal of the Decoder/Encoder Unit A (200RH)
AMM 23-73-46-400-001
Installation of the Decoder/Encoder Unit A (200RH)
AMM 33-21-00-710-001
Operational Test of the General Illumination
ASM 332101
ASM 332102
ASM 332103
AMM 33-21-11-000-001
Removal of the Ballast Unit, Lampholder and Fluorescent Tube
AMM 33-21-11-000-802
Removal of the Cabin LED Unit (CLEDU)
AMM 33-21-11-400-001
Installation of the Ballast Unit, Lampholder and Fluorescent Tube
AMM 33-21-11-400-802
Installation of the Cabin LED Unit (CLEDU)
3. Fault Confirmation
Subtask 33-21-00-710-050-A
A. Do the BITE-test of the Cabin Intercommunication Data-System (CIDS) AMM 23-73-00-740-005.
Subtask 33-21-00-710-055-A
B. Do the operational test of the general illumination AMM 33-21-00-710-001.
4. Fault Isolation
Subtask 33-21-00-810-050-A
A. If the test gives a maintenance message, do the trouble shooting procedure related to the maintenance message.
Subtask 33-21-00-810-055-A ** ON A/C NOT FOR ALL
B. If there is no CFDS maintenance message, but one light does not come on:
   (1) If the fault continues:
     (a) If there is approx. 115 VAC:
     (b) If there is no 115 VAC:
  • do a check and repair the WIRING if necessary between the related:
    BALLAST UNIT connector A/C and its CB,
    BALLAST UNIT connector A/A and GND,
    BALLAST UNIT connector A/B and GND ASM 332101, ASM 332102 and ASM 332103.
   (2) If the fault continues:
   (3) If the fault continues:
  • do a check and repair the WIRING between the related:
    BALLAST UNIT connector A/D and DEU-A connector B/1,B/4,B/9 or B/12,
    BALLAST UNIT connector A/E and DEU-A connector B/2,B/5,B/10 or B/13,
    BALLAST UNIT connector A/F and DEU-A connector B/3,B/6,B/11 or B/14 ASM 332101, ASM 332102 and ASM 332103.
Subtask 33-21-00-810-055-B ** ON A/C NOT FOR ALL
B. If there is no CFDS maintenance message, but one light does not come on:
   (1) If there is approx. 115 VAC:
     (a) If there is no 115 VAC:
  • Do a check and repair the WIRING if necessary between the related:
    CLEDU connector A/7 and its CB,
    CLEDU connector A/8 and GND ASM 332101, ASM 332102 and ASM 332103.
   (2) If the fault continues:
   (3) If the fault continues:
  • do a check and repair the WIRING between the related:
    CLEDU connector A/5 and DEU-A connector B/1,B/4,B/7,B/10,B/14,B/17,B/20 or B/23,
    CLEDU connector A/6 and DEU-A connector B/2,B/5,B/8,B/11,B/15,B/18,B/21 or B/24 ASM 332101, ASM 332102 and ASM 332103.
Subtask 33-21-00-710-056-A
C. Do the test as given in the Para. 3.A.
5. Close-up
Subtask 33-21-00-860-050-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:31:54 UTC
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