W DOC AIRBUS | TSM A320F

PA - No audio signals from one or two loudspeakers in series

TASK 23-73-00-810-872-A
PA - No audio signals from one or two loudspeakers in series

1. Possible Causes
  • loudspeakers
  • DEU-A (200RHxx)
  • wiring
  • PISA 602RHxx
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 23-73-00-710-036
Operational Test of the Loudspeaker through the MCDU
AMM 23-73-00-740-005
BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
ASM 237313
ASM 237314
ASM 237315
ASM 237316
AMM 23-73-41-000-001
Removal of the Passenger Interface and Supply Adapter (602RH)
AMM 23-73-41-400-001
Installation of the Passenger Interface and Supply Adapter (602RH)
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 23-73-51-000-001
Removal of the Loudspeaker
AMM 23-73-51-400-002
Installation of the Loudspeaker
3. Fault Confirmation
Subtask 23-73-00-710-186-A ** ON A/C NOT FOR ALL
A. Test
   (1) Do the CIDS BITE test through the CFDS AMM 23-73-00-740-005.
   (2) Do the CIDS1 LOUDSPEAKER test through the CFDS.
Subtask 23-73-00-710-186-B ** ON A/C NOT FOR ALL
A. Test
   (1) Do the CIDS Interface and Power-Up Test via the CFDS AMM 23-73-00-740-005.
   (2) Do the CIDS LOUDSPEAKER test via the CFDS AMM 23-73-00-710-036.
4. Fault Isolation
Subtask 23-73-00-810-486-A
A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
Subtask 23-73-00-810-487-A ** ON A/C NOT FOR ALL
B. If there is no maintenance message, but there is a fault in one or two loudspeakers in series:
   (1) If the fault continues:
     (a) If the fault continues:
  • do a check and repair the wiring between the:
    DEU-A 200RHxx connector C/5 and loudspeaker,
    DEU-A 200RHxx connector C/6 and loudspeaker,
    or
    DEU-A 200RHxx connector C/3 and loudspeaker,
    DEU-A 200RHxx connector C/4 and loudspeaker,
    or
    DEU-A 200RHxx connector C/1 and loudspeaker,
    DEU-A 200RHxx connector C/2 and loudspeaker ASM 237313, ASM 237314, ASM 237315 and ASM 237316.
Subtask 23-73-00-810-487-B ** ON A/C NOT FOR ALL
B. If the fault continues:
   (1) If the fault continues:
For a DEU-A connected Loudspeaker:
     (a) If the fault continues:
  • do a check and repair the wiring between the related:
    DEU-A 200RHxx connector with the signal name LS Hi and the related loudspeaker,
    DEU-A 200RHxx connector with the signal name LS Lo and the related loudspeaker,
    ASM 237313, ASM 237314, ASM 237315 and ASM 237316.
   (2) For a PISA connected loudspeaker:
     (a) If the fault continues:
  • do a check and repair the wiring between the related:
    PISA 602RHxx connector with the signal name AUDIO_P and the related loudspeaker,
    PISA 602RHxx connector with the signal name AUDIO_N and the related loudspeaker,
Subtask 23-73-00-710-187-A
C. Do the test given in 3.A.
[Rev.8 from Aug 2018] 2026.04.04 04:25:54 UTC
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