Loss of the FCDC 2 BUS 3 Signal for the FCDC 1

TASK 27-95-00-810-815-A
Loss of the FCDC 2 BUS 3 Signal for the FCDC 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 279503
AMM 27-95-34-000-001	Removal of the FCDC
AMM 27-95-34-400-001	Installation of the FCDC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-95-00-740-072-A

A. Test
(1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-95-00-810-061-A

A. If the BITE test gives the maintenance message:
FCDC1 OR BUS3 FROM FCDC2

(1) If the fault continues:

do a check and repair the wiring of the DGI 3/1 signal from the FCDC 1 (3CE1) to the first terminal block ASM 279503.

Subtask 27-95-00-740-073-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:28:24 UTC