Loss of the Reception of the FAC 1 GENERAL Bus by the FAC 2

TASK 22-66-00-810-813-A
Loss of the Reception of the FAC 1 GENERAL Bus by the FAC 2

1. Possible Causes

receivers of the FAC 1 GENERAL Bus
FAC-1 [1CC1]
wiring of the FAC OPP bus from the FAC 2 (1CC2) to the first terminal block
wiring of the FAC OPP HLTY COM and FAC OPP HLTY MON discretes from the FAC 2 (1CC2) to the first terminal block

2. Job Set-up Information
A. Referenced Information

3. Fault Confirmation
Subtask 22-66-00-710-072-A

A. Test
(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 1.

4. Fault Isolation
Subtask 22-66-00-810-062-A

A. If the test gives the maintenance message AFS: FAC1:

do a check of the receivers of the FAC 1 GENERAL Bus (FAC OWN (GENERAL BUS), pin AB/12J, 12K) (Ref. TSM TASK 31-32-00-810-934) with ASM 226901.

(1) If the fault continues:

(a) If the fault continues:

do a check of the wiring of the FAC OPP bus from the FAC 2 (1CC2) to the first terminal block, ASM 226901.

1 If there is no continuity:

2 If there is continuity:

do a check and repair the wiring of the FAC OPP HLTY COM and FAC OPP HLTY MON discretes from the FAC 2 (1CC2) to the first terminal block ASM 226501.

Subtask 22-66-00-710-073-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:16 UTC