W DOC AIRBUS | TSM A320F

Loss of the FMGC 1 EIS COM Bus (Source EIS 2)

TASK 22-11-00-810-830-A
Loss of the FMGC 1 EIS COM Bus (Source EIS 2)

1. Possible Causes
  • FMGC-1 [1CA1]
  • wiring of the EIS (COM) bus from the FMGC 1 (1CA1) to the first terminal block
  • wiring of the FMGC HLTY discretes (from the FMGC 1 (1CA1) to the first terminal block)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 22-83-34-000-001
Removal of the FMGC
AMM 22-83-34-400-001
Installation of the FMGC
ASM 228504
ASM 228602
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 22-11-00-865-063-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUAUTO FLT/FMGC/110CA1B02
Subtask 22-11-00-740-066-A ** ON A/C NOT FOR ALL
B. Test
   (1) Do the BITE test of the EIS (System 2) AMM 31-60-00-740-002.
Subtask 22-11-00-740-066-B ** ON A/C NOT FOR ALL
B. Test
   (1) Do the Ground Scanning Test of the DMC AMM 31-60-00-740-007.
4. Fault Isolation
Subtask 22-11-00-810-085-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message DMC 2 : NO FMC 1 DATA:
   (1) If the fault continues:
  • do a check of the wiring of the EIS (COM) bus from the FMGC 1 (1CA1) to the first terminal block ASM 228602.
     (a) If there is no continuity:
  • repair the above wiring.
     (b) If there is continuity:
  • do a check and repair the wiring of the FMGC HLTY discretes (from the FMGC 1 (1CA1) to the first terminal block) ASM 228504.
Subtask 22-11-00-810-085-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message FMGC1(1CA1)BUS FM1 TO EIS/DMC2(1WT2)
   (1) If the fault continues:
  • do a check of the wiring of the EIS (COM) bus from the FMGC 1 (1CA1) to the first terminal block ASM 228602.
     (a) If there is no continuity:
  • repair the above wiring.
     (b) If there is continuity:
  • do a check and repair the wiring of the FMGC HLTY discretes (from the FMGC 1 (1CA1) to the first terminal block) ASM 228504.
Subtask 22-11-00-740-067-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:25:08 UTC
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