DOC AIRBUS | TSM A320FLoss of Data on the Bus from the EIU 2 to the FWC, CFDIU and BMC
1. Possible Causes
· EIU-2 ( 1KS2 )
· wiring from the EIU 2 (1KS2) pins AB/5H, 5K to the first terminal block
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. ASM 73-25-06
Ref. AMM 73-25-34-000-041 Removal of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-400-041 Installation of the Engine Interface Unit (EIU)
Ref. AMM 73-25-34-710-042 Operational Test of the EIU with the CFDS
3. Fault Confirmation
Subtask 73-25-00-710-090-A
A. Test
(1) Do the operational test of the EIU 2 with the CFDS Ref. AMM 73-25-34-710-042 .
4. Fault Isolation
Subtask 73-25-00-810-070-A
A. If the operational test gives the maintenance message CHECK EIU2 ARINC OUTPUT CIRCUIT TO
198VC OR EIU2:
· replace the EIU-2 ( 1KS2 ) , Ref. AMM 73-25-34-000-041 and Ref. AMM 73-25-34-400-041 .
(1) If the fault continues:
· do a check and repair the wiring from the EIU 2 (1KS2) pins AB/5H, 5K to the first terminal block ,
Ref. ASM 73-25-06.
Subtask 73-25-00-710-091-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:36:22 UTC