DOC AIRBUS | TSM A320FDisagree between the L/G Signal Inputs on EIU 2
1. Possible Causes
· EIU-2 ( 1KS2 )
· LGCIU-2 ( 5GA2 )
· wiring from the EIU 2 (1KS2) to the LGCIU 2 (5GA2)
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 32-31-71-000-001 Removal of the LGCIU
Ref. AMM 32-31-71-400-001 Installation of the LGCIU
Ref. ASM 73-25-16
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 73-25-34-860-041 EIU DISCRETE OUTPUTS Simulation
3. Fault Confirmation
Subtask 73-25-00-710-104-A
A. Do the EIU DISCRETE OUTPUTS simulation and check the LOP GND1 discrete output status Ref.
AMM 73-25-34-860-041 .
4. Fault Isolation
Subtask 73-25-00-810-077-A
A. If the LOP GND1 discrete outputs status is 0:
· 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:
· replace the LGCIU-2 ( 5GA2 ) , Ref. AMM 32-31-71-000-001 and Ref. AMM 32-31-71-400-001 .
(2) If the fault continues:
· do a check and repair the wiring from the EIU 2 (1KS2) to the LGCIU 2 (5GA2) pins AA/5D, 5E to
pins AB/3G, 3K Ref. ASM 73-25-16.
Subtask 73-25-00-710-105-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:36:22 UTC