Disagree between Data Received from the LGCIU 1

TASK 73-25-00-810-871-A
Disagree between Data Received from the LGCIU 1

1. Possible Causes

EIU-1 [1KS1]
LGCIU-1 [5GA1]
wiring from the pins AA/5D, 5E of the EIU-1 (1KS1) to the pins AB/3G, 3K of the LGCIU 1 (5GA1)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-31-71-000-001	Removal of the LGCIU
AMM 32-31-71-400-001	Installation of the LGCIU
ASM 732516
AMM 73-25-34-000-040	Removal of the Engine Interface Unit (EIU)
AMM 73-25-34-400-040	Installation of the Engine Interface Unit (EIU)

3. Fault Confirmation
Subtask 73-25-00-710-202-A ** ON A/C NOT FOR ALL

A. Not applicable.

4. Fault Isolation
Subtask 73-25-00-810-126-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message CHECK LGCIU 1 L/G COMP SIGNALS (DISAGREE):

(1) If the fault continues:

(2) If the fault continues:

do a check and repair the wiring from the pins AA/5D, 5E of the EIU-1 (1KS1) to the pins AB/3G, 3K of the LGCIU 1 (5GA1) ASM 732516.

Subtask 73-25-00-710-203-A ** ON A/C NOT FOR ALL

B. Test
(1) During the subsequent engine start make sure that:

(2) After a subsequent flight make sure that the maintenance message is no more present.

[Rev.8 from Aug 2018] 2026.04.04 04:35:45 UTC