B. If the test gives the maintenance message for the FMGC 1 only:
 AFS: FMGC1/FCU (FW DISC1):

 - replace the FMGC-1 (1CA1) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001).
 (1) If the fault continues:
 - do a check of the wiring of the FCU OWN HLTY discrete from the FMGC 1 (1CA1) to the first terminal block (Ref. ASM 22-85/04).
 (a) If there is no continuity:

 - repair the above wiring.

 (b) If there is continuity:

 - do a check and repair the wiring of the FCU OWN FAIL discrete from the FMGC 1 (1CA1) to the FCU (2CA) (Ref. ASM 22-85/04).
 C. If the test gives the maintenance message for the FMGC 2 only:
 AFS: FMGC2/FCU (FW DISC1):

 - replace the FMGC-2 (1CA2) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001) .
 (1) If the fault continues:
 - do a check and repair the wiring of the FCU OPP HLTY discrete from the FMGC 2 (1CA2) to the first block terminal (Ref. ASM 22-85/04).
 D. If the test gives the maintenance messages for the two FMGCs:
 AFS: FMGC1/FCU (FW DISC1) and
 AFS: FMGC2/FCU (FW DISC1):
 - open the circuit breaker (10CA1)
 - open the circuit breaker (9CA1)

 - after 5 seconds, close the circuit breaker (9CA1)

 - do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) and read the result for the FMGC 2.

 (1) If the test gives the maintenance message AFS: FMGC2/FCU (FW DISC1):

 - replace the FCU (2CA) (Ref. AMM TASK 22-81-12-000-001) and (Ref. AMM TASK 22-81-12-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the FCU 1 HLTY discrete from the FCU (2CA) to the first terminal block (Ref. ASM 22-85/04).

 (2) If the test does not give the maintenance message AFS: FMGC2/FCU (FW DISC1):

 - replace the FMGC-1 (1CA1) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001).
 (a) If the fault continues:
 - do a check of the wiring of the FW OWN HLTY discrete from the FMGC 1 (1CA1) to the first terminal block (Ref. ASM 22-85/04).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞22-81-00∞∞∞∞∞∞∞∞∞∞Page 213
 Feb 01/98 CES

 1_ If there is no continuity:
 - repair the above wiring.
 2_ If there is continuity:
 - do a check and repair the wiring of the FCU OWN FAIL
 discrete from the FMGC 1 (1CA1) to the FCU (2CA) (Ref. ASM

 22-85/04).
 E. Do the test given in Para. 3.

 Loss of the FCU 2 FAIL and FCU 2 HLTY Discretes
 1. Possible Causes
_______________
 - FMGC-2 (1CA2)

 - FMGC-1 (1CA1)

 - FCU (2CA)

 - wiring of the FCU OWN HLTY discrete from the FMGC 2 (1CA2) to the first terminal block

 - wiring of the FCU OWN FAIL discrete from the FMGC 2 (1CA2) to the FCU (2CA)

 - wiring of the FCU OPP HLTY discrete from the FMGC 1 (1CA1) to the first terminal block

 - wiring of the FCU 2 HLTY discrete from the FCU (2CA) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-81-12-000-001 Removal of the FCU (2CA)
 AMM 22-81-12-400-001 Installation of the FCU (2CA)
 AMM 22-83-34-000-001 Removal of the FMGC (1CA1,1CA2)
 AMM 22-83-34-400-001 Installation of the FMGC (1CA1,1CA2)
 AMM 22-96-00-710-001 Operational Test of the AFS
 ASM 22-85/04

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) and read the results for the FMGC 1 and the FMGC 2.
 4. Fault Isolation
_______________
 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU AUTO FLT/FCU/2 9CA2 M21 121VU AUTO FLT/FMGC/2 10CA2 M17
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞22-81-00∞∞∞∞∞∞∞∞∞∞Page 215
　
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