Loss of the Reception of the HYD CIRC PRESS SW Discrete by the FAC 2

TASK 22-63-00-810-812-A
Loss of the Reception of the HYD CIRC PRESS SW Discrete by the FAC 2

1. Possible Causes

FAC-2 [1CC2]
wiring of the HYD CIRC PRESS SW discrete (from the FAC 2 (1CC2) to the first terminal block)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-66-34-000-002	Removal of the FAC
AMM 22-66-34-400-002	Installation of the FAC
ASM 226804
AMM 22-91-00-710-001	Ground Scanning of the AFS
AMM 29-10-00-863-003	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
AMM 29-10-00-864-003	Depressurize the Blue Hydraulic System
AMM 29-23-00-863-001	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
AMM 29-23-00-864-001	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
AMM 29-24-00-863-001	Pressurize the Yellow Hydraulic System with the Electric Pump
AMM 29-24-00-864-001	Depressurize the Yellow Hydraulic System

3. Fault Confirmation
Subtask 22-63-00-860-056-A

A. Job Set-up
(1) Aircraft Maintenance Configuration
(a) Pressurize the aircraft hydraulic systems
AMM 29-10-00-863-003 AMM 29-23-00-863-001 AMM 29-24-00-863-001.

Subtask 22-63-00-710-074-A

B. Test
(1) Do the Ground Scanning of the AFS AMM 22-91-00-710-001.

4. Fault Isolation
Subtask 22-63-00-810-063-A

A. If the test gives the maintenance message AFS : HYD Y 3151GN:

on the MCDU, get the AFS/TEST REPORT TROUBLE SHOOTING DATA page.
make sure that the fourth number of the word W3 is equal to one of these values:
. 8, 9, A, B, C, D, E or F.

(1) If the fourth number is not equal to one of the above values:

(a) If the fault continues:

do a check and repair the wiring of the HYD CIRC PRESS SW discrete (from the FAC 2 (1CC2) to the first terminal block) ASM 226804.

Subtask 22-63-00-710-075-A

B. Do the test given in Para. 3.

5. Close-up
Subtask 22-63-00-860-057-A

A. Put the aircraft back to its initial configuration.
(1) Depressurize the aircraft hydraulic systems
AMM 29-10-00-864-003 AMM 29-23-00-864-001 and AMM 29-24-00-864-001.

[Rev.8 from Aug 2018] 2026.04.04 04:25:15 UTC