W DOC AIRBUS | TSM A320F

Failure of the CFDIU Detected by the DMC 3

TASK 31-32-00-810-860-A
Failure of the CFDIU Detected by the DMC 3

1. Possible Causes
  • CFDIU [1TW]
  • wiring
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
ASM 313205
AMM 31-32-34-000-001
Removal of the CFDIU
AMM 31-32-34-400-001
Installation of the CFDIU
AMM 31-60-00-740-002
Perform Electronic Instrument System (EIS) Input Test
AMM 31-60-00-740-007
GROUND SCANNING Test of the DMC
3. Fault Confirmation
Subtask 31-32-00-865-108-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUEIS/DMC3/STBY/SPLY14WT1E10
49VUEIS/DMC3/SWTG21WT3E07
121VUEIS/DMC3/SPLY10WT3Q09
Subtask 31-32-00-740-164-A ** ON A/C NOT FOR ALL
B. Test
Do the EIS input test (system 3) AMM 31-60-00-740-002.
Subtask 31-32-00-740-164-B ** ON A/C NOT FOR ALL
B. Test
Do the Ground Scanning Test of the DMC AMM 31-60-00-740-007.
4. Fault Isolation
Subtask 31-32-00-810-109-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message DMC3 : NO CFDIU DATA:
   (1) If the fault continues:
  • do a check and repair the wiring from the CFDIU (1TW) pins AB/11D, 11E to the first terminal block , ASM 313205.
Subtask 31-32-00-810-109-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message CFDIU(1TW)/DMC3(1WT1)
   (1) If the fault continues:
  • do a check and repair the wiring from the CFDIU (1TW) pins AB/11D, 11E to the first terminal block , ASM 313205.
Subtask 31-32-00-740-165-A
B. Do the test given in Para. 3.B.
[Rev.8 from Aug 2018] 2026.04.04 04:29:53 UTC
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