LGCIU - No Data from CFDS

TASK 32-31-00-810-879-A
LGCIU - No Data from CFDS

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. MOVEMENT OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

1. Possible Causes

LGCIU-1 [5GA1]
LGCIU-2 [5GA2]
CFDIU [1TW]
aircraft wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-32-34-000-001	Removal of the CFDIU
AMM 31-32-34-400-001	Installation of the CFDIU
AMM 32-31-71-000-001	Removal of the LGCIU
AMM 32-31-71-400-001	Installation of the LGCIU
ASM 326102
AMM 32-69-00-740-001	BITE Check of Landing-Gear Control Interface-Unit (LGCIU) With Use of MCDU to Ensure that Continuous BITE is Operative

3. Fault Confirmation
Subtask 32-31-00-710-070-A

A. Test
(1) Do a BITE test of the applicable LGCIU 1(2) AMM 32-69-00-740-001:

if the test result is TEST OK, or END OF TEST, there is no fault
if the test does not start, do the fault isolation procedure given in Para. 4.

4. Fault Isolation
Subtask 32-31-00-810-137-A

A. Procedure
(1) Interchange LGCIU 1 with LGCIU 2.
(2) Do the test given in Para 3:

if the test does not start, do the step at Para. (5)
if the test result is TEST OK, or END OF TEST, do the next step.

(3) Replace the initial LGCIU-1 [5GA1] or LGCIU-2 [5GA2] , AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(4) Make sure that the serviceable LGCIU is installed in its initial position.
(5) Do the test given in Para 3:

if the fault continues, do the step at Para. (7).

(6) Replace the CFDIU [1TW] , AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
(7) Do the test given in Para. 3.

if the fault continues, do the next step.

(8) Do a check of the aircraft wiring ARINC-comnnection between the LGCIU 1(2) and the CFDIU ASM 326102, and repair as necessary.
(9) Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:31:25 UTC