DOC AIRBUS | TSM A320FLoss of the Output 1 Bus on EEC 2 Channel A
1. Possible Causes
· EEC ( 4000KS )
· wiring of EEC A OUTPUT 1 signal from the EEC 2 (4000KS) to the first terminal block
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 31-50-00-710-001 Ground Scanning of the Central Warning System
Ref. AMM 73-22-34-000-010 Removal of the Electronic Engine Control (EEC)
Ref. AMM 73-22-34-400-010 Installation of the Electronic Engine Control (EEC)
Ref. ASM 73-25-10
3. Fault Confirmation
Subtask 73-20-00-710-062-A
A. Test
(1) Do the operational test of the central warning systems (FWC) Ref. AMM 31-50-00-710-001 .
4. Fault Isolation
Subtask 73-20-00-810-059-A
A. If the test gives the maintenance message FWC2 : NO DATA FROM EEC 2A:
· replace the EEC ( 4000KS ) , Ref. AMM 73-22-34-000-010 and Ref. AMM 73-22-34-400-010 .
(1) If the fault continues:
· do a check and repair the wiring of EEC A OUTPUT 1 signal from the EEC 2 (4000KS) to the first
terminal block , Ref. ASM 73-25-10.
Subtask 73-20-00-710-063-A
B. Do the test given in Para. 3. [Rev.6 from Feb 2017] 2026.04.04 04:36:11 UTC