Internal Failure of the Data Loading Routing Box

TASK 31-38-00-810-801-A
Internal Failure of the Data Loading Routing Box

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-38-34-000-001	Removal of the Data Loading Routing Box (DLRB)
AMM 31-38-34-400-001	Installation of the Data Loading Routing Box (DLRB)

3. Fault Confirmation
Subtask 31-38-00-740-050-A

A. Not applicable, the fault is evident.

4. Fault Isolation
Subtask 31-38-00-810-050-A

A. If the fault symptom is identified by the crew observation:

name of the LRU and CHAN FAIL indication on the display of the Data Loading Selector.

replace the ROUTING BOX-DATA LOADING [102TD] AMM 31-38-34-000-001 and AMM 31-38-34-400-001.

Subtask 31-38-00-710-050-A

B. Test

ACTION	RESULT
1.On the overhead panel, on the Data Loading Selector: set the ON/OFF switch to ON	On the display of the Data Loading Selector: DB/N: PUSH NEXT/PREV indication is shown.
2.On the overhead panel, on the Data Loading Selector: push PREV or NEXT key as many times as necessary to get all the LRUs	On the Data Loading Selector: each time you push one of these keys: the name of an LRU (example: FMGC1) and the NOT SELECTED indication are shown on the display. NOTE: The CHAN FAIL indication must not come into view.

[Rev.8 from Aug 2018] 2026.04.04 04:30:08 UTC